51 Abstract : Dental Photography is one of important art and science in esthetic dentistry. This lecture will give you tip and tricks in taking photography for dental work
Presentation Title: Assoc.Prof. Dr. Udom Thongudomporn 52 Curriculum Vitae Assoc Prof Dr Udom Thongudomporn and Dr Witsarut Upalananda Synopsis This lecture takes you on a journey through orthodontic imaging, covering its past, present, and future. It emphasizes the crucial role of imaging techniques in modern orthodontics, showcasing various imaging methods for diagnosis, planning, and treatment monitoring. The lecture highlights the importance of imaging in evaluating craniofacial structures, dental alignment, and skeletal relationships. It delves into both traditional imaging methods and the benefits they offer. Moreover, the lecture unveils the integration of 3D imaging, including Cone-beam computed tomography (CBCT) and intraoral scanners, for improved treatment planning and patient comfort. The incorporation of 3D facial imaging and surface scanning is explored, aidingfacial analysis andcustomizedtreatments. The lecture also touches on augmented reality (AR) and virtual reality (VR) and their potential, as well as advancements in artificial intelligence (AI) and machine learning for image analysis and treatment prediction, withthepotential to transformorthodontic care. “Imaging in Orthodontics: From Clinical Applications to Future Innovations”
Dr. Witsarut Upalananda DDS, MS Presentation Title: 53 “Imaging in Orthodontics: From Clinical Applications to Future Innovations” 2018: D.D.S., Faculty of Dentistry, Prince of Songkla University, 2021: Master of Sciences in Dentistry (Oral and Maxillofacial Lecturer and Clinical Instructor, Dental Hospital, Faculty of General Practitioner, Dental Hospital, Faculty of Dentistry, Curriculum Vitae Witsarut Upalananda, DDS, MS Section of Oral and Maxillofacial Radiology, Department of Oral Diagnostic Sciences, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand. Tel: (+66) 836566366 E-mail: [email protected] Academic Background: Hatyai, Thailand. Radiology), Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand. Current Appointment: Dentistry, Prince of Songkla University, Thailand. Prince of Songkla University, Thailand.
54 Synopsis: This lecture takes you on a journey through orthodontic imaging, covering its past, present, and future. It emphasizes the crucial role of imaging techniques in modern orthodontics, showcasing various imaging methods for diagnosis, planning, and treatment monitoring. The lecture highlights the importance of imaging in evaluating craniofacial structures, dental alignment, and skeletal relationships. It delves into both traditional imaging methods and the benefits they offer. Moreover, the lecture unveils the integration of 3D imaging, including Cone-beam computed tomography (CBCT) and intraoral scanners, for improved treatment planning and patient comfort. The incorporation of 3D facial imaging and surface scanning is explored, aiding facial analysis and customized treatments. The lecture also touches on augmented reality (AR) and virtual reality (VR) and their potential, as well as advancements in artificial intelligence (AI) and machine learning for image analysis andtreatmentprediction,withthepotential totransformorthodonticcare.
55 Prof. Dr. Ates Parlar Presentation Title: GUIDED BONE REGENERATION IN IMPLANT DENTISTRY: WITH SPECIAL EMPHASIS ON STRAUMANN IMPLANTS. 1982: D.D.S., School of Dentistry, University of Ankara. 1993: Researcher at University of Texas, Houston, USA under 1991: Visiting Scholar at University of Bern, Switzerland under 1995: Professor in Periodontology. Founded IDEA®™ (Interdisciplinary Dental Education Academy), Practices dentistry at his clinic, PrimaDent®™. Curriculum Vitae Prof. Dr. Ates Parlar Email: [email protected] Prof. Dr. Ates Parlar is an esteemed figure in dentistry with expertise spanning implantology, esthetic dentistry, and periodontics. With over 25 years of experience, his journey began with his graduation from the University of Ankara and has since led him through academia, research, and practice globally. Academic Background: Prof. Raul Caffesse. Prof. N.P. Lang. Current Appointment: offering courses like ImplantMasters®™ and PerioMasters®™.
56 Research and Publications Authored over 70 experimental and clinical papers in international journals. 1.Parlar, A., Gazioğlu, O., Oygür, T., Salırlı,F., Baloş, K. InVivo Responsesof Periodontal Ligament Cells to Different Root Surfaces Treated by Various Methods. Presented during IAP (International Academy of Periodontology) 4th World Congress, 1990, Istanbul. 2.Parlar, A., Caffesse, R., Rossmann, J.A., Oygür, T., Baloş, K., Nasjleti, C., Ghaffar, K. In Vivo Separation of Periodontal Ligament and Bone Cells. Presented during The First Scientific Meeting of European Society of Periodontology, EuroPerio1, May 12-15, 1994, Paris, France. 3.Çetiner, D., Parlar, A. Comparison of connective tissue grafts versus different resorbable membranes for the treatment of localized gingival recessions. 1st International congress of Esthetic Dentistry Association, September 12-14, 1997. 4.Parlar, A., Bosshardt, D.D., Ünsal, B., Lang, N.P., Çetiner, D., Haytaç, C. New Formation of Periodontal Tissues Around TitaniumImplants. Presented during the 32nd Annual Meeting of the Swiss Society of Periodontology, Bern, Switzerland, September 12-14, 2002. 5.Ates Parlar, D.D. Bosshardt, D. Çetiner, D, Schafroth, B. Ünsal; C. Haytac, A. Joss, N.P. Lang. Influence of various surface treatments on reosseointegration of contaminated implants. Joint congress of IAP (International Academy of Periodontology) and SSP (Swiss Society of Periodontology), September 2007, Bern, Switzerland.
57 6.Eylem Ayhan, Ates Parlar. Comparison of the effects of enamel matrix protein (Emdogain) and Bio-oss collagen on bone formation in extraction sockets covered with punch grafts. 4th ITI Turkish congress, May 3-4, 2008, Istanbul. Synopsis: Guided Bone Regeneration is a well proven biological and clinical approach to augment bone volume in order to facilitate proper positioning of dental implants, in sites where bone dimensions are not sufficient. In the introduction, the concept and principles of Guided Bone regeneration will be explained. The main indications of GBR are simultaneous or staged bone augmentation for implant placement. Other indications are socket preservation and regeneration of bony defects at periimplantitis sites. Cases of GBR procedure together with Straumann implants will be presented. Experimental studies regarding GBR concept and periimplantitis treatment will also be included in the lecture.
ANDAMAN DENTAL CONGRESS
Oral presentation ADC 2023
Title : Digital, 3D simulation and in-house aligner (thermoforming& direct 3D print) applications in orthodontic treatment Author and Affliation: Dr Viet Hoang - Department of orthodontics &Pediatrics,VanLangUniversity,Viet Nam Objective: Clinical technique Introduction: Three-dimensional technologieshavebeen widelyusedindifferent areas of dentistry including orthodontics. There, their implementation has gradually changed the way clinicians perform their diagnosis, treatment plans, monitoring and result assessment. One area relying heavily on 3Dthathavebeenboominglately, is clear aligner. Aligners are being marketed to patients by aligner companies in every way possible. As the price for the equipment needed to produce aligner in-house has dramatically decreased recently orthodontists areincreasingly choosing to fabricate aligners in-house. This can potentially bring advantages in the overhead cost, flexibility, delivery and doctor's time ifdone correctly (Like we canprint themodel withFDMprinter) And with newest technology, we can do direct printed with newworkflow, canprotect the environmentbut the cost willbehigher Method & Discussion: Inorthodontics, with3D simulation, we canmakeprecise treatmentplanand understand clearly what mechanics need to be used, avoid the baddiagnostic and failure, more confidence with my treatment plan, thepatient canunderstandtheir treatment. 60
- How to avoid the failure and making money in orthodontics Inthispresentation, we will share about thedigitalorthodontics applications in my clinic.We share about the workflow, what we can do with digital andhowtomakeadvantageswithdigital. - Digital applications for consulting, treatment planning and clinical - In house aligner, what we have, what we can do, thermoforming aligner or direct 3D printed aligner? Advantages of in house aligner 1: In-house production of aligner can be done for cutting down thecost charged by external laboratories 2: The production time is shorter, with same day delivery of aligners being possible in some cases 3: The overall time the practitioner needs to be involved in the production of aligners, can be shorter in-house than with external laboratories. Conclusion: Three-dimensional technologies and in house aligner treatment haveevolved exponentially in recent years, and this has translated into great advancements in orthodontics. These advancements result in an optimizedworkflow during diagnosis, treatment planning, case monitoring andoutcome assessment of any given case. In this field in-house aligner will probably changetheeconomicsof CAT therapy formanypractice. Andnow, wecanchangethegamewithdirectprintedaligner. Keywords: Digital orthodontics, clear aligner, simulation, 3D printer, diagnostic. Acknowledgement: Nicolas Salesse, DDS, Msc. 61
Title: Comparison Between Digital Photography, Intraoral Scanner, AndSpectrophotometer in DentalShadeMatching Author and Affiliation: Tawan Sangsue, DDS,ᵃ Daraporn Sae-Lee, DDS, MSc, PhD,ᵇ Niwut Jantavee, DDS, CAGS, MSD, DScD,ᶜ Subin Puasiri, DDS, MPH,ᵈ ᵃResidency training in Prosthodontics, Faculty of Dentistry, Khon KaenUniversity, Khon Kaen, Thailand ᵇ Associate Professor, Departmentof Prosthodontics,Facultyof Dentistry, Khon Kaen University, Khon Kaen, Thailand ᶜProfessor,DepartmentofProsthodontics,FacultyofDentistry,KhonKaenUniversity, Khon Kaen, Thailand ᵈAssistantProfessor,DivisionofDentalpublicHealth,DepartmentofPreventiveDentistry,FacultyofDentistry,KhonKaenUniversity,KhonKaen,Thailand Objective: The objective of this in vitro study was to compare dental shade matching methods between a cross polarized photography using DSLR, two cross polarized smartphones and intraoral scanner by using color difference (ΔE). Material and Methods: Forty human teeth with different tooth formi.e., incisor, canine, premolar, and molar were collected 10 per eachgroup. Plaster block size 20³ mm were fabricated using plaster of Paris as a stable based for each tooth. Spectrophotometer (VITAEasyshade V, VITA Zahnfabrik®, Bad Säckingen, Germany) (a control group), a cross polarized photography using digital single lens reflect camera (D750, Nikon®, Japan), two different cross polarizedsmartphone photography systems (iPhone 11 Pro Max, Apple®, USAand Xiaom Redmi Note 8, Xiaomi®, China), and intraoral scanner (3shape Trios, 3Shape®, Denmark) were used to determine the tooth62
color shade fromthe center of labial tooth surface with 3 different levels (incisal, middle, and cervical), which were collected as CIELabvalue (n = 120). The color difference (ΔE) were calculated and statistical analyzed with 3-Way ANOVA and Bonferroni post-hoc test (a=.05). Results: The color difference between a cross polarized photography using DSLRmethodandthe spectrophotometermethod was the lowest (ΔE = 4.9), followed by a cross polarized smartphone photography obtained from Redmi Note 8 (ΔE = 7.7), iPhone 11 Promax (ΔE = 9.9), andintraoral scanner method (ΔE = 13.6). Statistically significant of color difference were found between shade matching method and amongtoothform. Conclusions: The shadematchingfromDSLR cross polarizedphotography was themostaccuratemethodfollowedby thesmartphone photography andintraoralscanner.Thefactorswhichhaveaneffect tothecolormatchingwereshadematchingmethodandtoothform. Keywords: Digital Photography, Intraoral Scanner, Spectrophotometer, Shade Matching, Color difference Acknowledgement: The successful completion of this research abstract would not have been possible without the support, guidance, andcontributions of my advisor Assoc. Prof. Dr. Daraporn Sae-Lee, Prof. Dr Niwut Jantavee and Asst.Prof. Subin Puasiri whose insightful guidanceand unwavering support propelled this research forward. I also acknowledge the Department of Prosthodontics, Khon KaenUniversity for providing the necessary resources, facilities, and aconducive environment for conducting this research. 49
Title: Determination of The Relationship Between Halitosis and Diabetes Mellitus Utilizing a Simple Tool Nurdiana¹, Pitu Wulandari², Putri Shaliha Yanata³ ¹Department of Oral Medicine, Faculty of Dentistry, Universitas SumateraUtara,Medan,Indonesia ²Department of Periodontics, Faculty of Dentistry, Universitas SumateraUtara, Medan, Indonesia ³Undergraduate Student, Faculty of Dentistry, Universitas SumateraUtara, Medan, Indonesia E-mail: [email protected] Objective: This study aimed to determine the relationship betweencontrolled and uncontrolled type 2 diabetes mellitus and halitosis as well as halitosis scores. Materials and Methods: The study was an analytical study. Seventy-fivetype 2 diabetes mellitus patients in Internal Medicine Outpatient Clinic, Adam Malik Hospital, Medan, were included. Demographic data wereobtained from direct questions. The medical record was used todetermine type 2 diabetes mellitus diagnosis. The patients wereclassified as controlled if HbA1C <7,00% and uncontrolled if HbA1C≥7,00%. Halitosis was measured with Tanita Breath Checker®. Thepatient was instructed to gargle with water and then asked to exhale infront of the device sensor for approximately 4 seconds until a halitosis score appeared. Diagnosis of halitosis was determined if the score was ≥2. Fisher Test and Mann-Whitney Test wereusedto analyze the results. Result:Thestudy result showedhalitosiswas foundin65(86.7%) type2diabetes mellitus, with13(68.4%)inthecontrolledand52(92.9%)intheuncontrolledgroup. 64
There was a significant relationshipbetweencontrolledanduncontrolledtype 2diabetesmellitus andhalitosis withap-valueof0.014(p<0.05). Furthermore, there was a significant relationship between controlledand uncontrolled type 2 diabetes mellitus and halitosis scores witha p-value of 0.001 (p<0.05). Conclusion: In conclusion, halitosis in diabetes mellitus patients can be determinedusinga simpledevice sohalitosis canbedetectedeasily and quickly. Results showed a significant relationship between controlled and uncontrolled type 2 diabetes mellitus and halitosis and between controlled and uncontrolled type 2 diabetesmellitus and halitosis scores utilizingsimpledevices. Keywords: Type 2 Diabetes mellitus; Controlled diabetes mellitus; Uncontrolled diabetes mellitus; Halitosis; Halitosis score. Acknowledgment: The authors would like to thank the exceedingly kind medical personnel at Internal Medicine Outpatient Clinic, Adam Malik Hospital,Medan, whohavebeenhelpful inthis research.Furthermore, the authorswouldalsoliketothankeveryonewhohelpedwiththis research. 65
Title: Mucocutaneous pemphigus vulgaris: A case report Author and Affiliation: Muhammad Usman Amanat1, Duangporn Kerdpon² ¹, ² Department of Oral Diagnostic Sciences, Faculty of Dentistry, Prince of Songkla University, Hatyai, Songkhla, Thailand Objectives: This case report elucidates the responsibilities of dental professionals in identifying mucocutaneous lesions associated with pemphigus vulgaris, as well as the timely intervention and subsequent treatment outcomes. Case Report: Pemphigus vulgaris is a rare chronic disorder of autoimmune origindistinguishedby intraepithelialblisteringaffectingmucocutaneous surfaces. Since it can be potentially life-threatening, prompt early management is essential. A case of pemphigus vulgaris in a 51-year-old woman presentingwith extensive, painful oral and skin ulcerations is presented. A one-year history demonstrated a gradual worsening of lesions, eventually leading todysphagia and the inability tomaintain oral hygiene. Extra oral examinationrevealed ulcerative lesions on her scalp, tip of the nose and lower lip. Basedon the presence of oral mucosa and skin involvement, as well as theobserved fragility of the gingivae, a preliminary diagnosis of pemphigus vulgaris wasmade. Thisdiagnosis was subsequently confirmedthroughtheuse of direct immunofluorescence. The discussion encompasses the topics ofdifferentialdiagnosisandmanagement. 66
Conclusion: This case report emphasizes the importanceofobtaininga comprehensivecase history and performing a thorough oral and systemic examination tofacilitate prompt diagnosis and treatment, thereby influencing theprognosisandprogressionof thedisease. Keywords: pemphigus vulgaris, oral vesiculobullous lesion, mucocutaneous lesion,autoimmunedisease,desquamativegingivitis. Acknowledgment: - 67
Wararat Jaichuen, Health Administration Division, Ministry of Public Health, Thailand Saruta Saengtipbovorn, Public health center 54, HealthDepartment, Bangkok Metropolitan Administration. Poolpruek Soparat, Bureau of Dental Health, Department of Health, Ministry of Public Health, Thailand. Title: Developing a primary care-based oral health informationsystem for the elderly. Author and Affiliation: 1. 2. 3. Objectives: The establishment of standardized datasets is imperative for theadvancement of oral health care for the elderly within the primary caresystem. The objective of the data set is to promote awareness amongthe elderly regarding the potential risks of developing oral diseases anddisorders as a result of drug usage or underlying medical conditions. Tomake an informed decision regarding the consultation with dental professionals and the subsequent assessment for oral health careplanning. Materials and Method: The Delphi method was employed, consisting of three iterative rounds. The participants possess expertise in a diverse range of disciplines, including primary dental care, dental public health, geriatric dentistry, oral diagnostic sciences, periodontology, operative dentistry, prosthodontics, occlusion and orofacial pain, oral and maxillofacial surgery, family physicians, geriatric family medicine, and physiatrists. A total of 20participantswereselectedusingpurposivesampling. 68
Result: Theexpertgrouphasreachedaconsensusthat it isnecessarytoimplement a warning system specifically designed for the elderly population. This system aims to alert them about the potential risks associated with various diseases and abnormalities that may occur within their oral cavity. Theproposed warning system is categorized into three distinct types. Firstly, Rapid enrollment into the oral healthcare system, which is administered by dental professionals for 4 following health conditions; Head and neckradiation, Sjögren's syndrome, Neurodegenerative disorders such as dementia, Alzheimer'sdisease, and Parkinson'sdisease, andtheutilizationof pharmaceutical substances that have the potential to induce medication- related osteonecrosis of the jaw (MRONJ). Secondly, examine the historical context of drug utilization in conjunction with symptom assessment, encompassingtheevaluationofxerostomiaandgingivalhyperplasiacausedby drug administration. The utilization of the Xerostomia Inventory (XI) is recommendedfor thepurposeof screeningsymptommanifestation.Lastly, the primary emphasis should be placed on the self-evaluation of potential oralhealthhazards,suchasArthritis. Conclusion: The consensus among the expert group has been established regardingthe implementation of three distinct warning systems to address theimpactofdruguse andhealthconditionsonoralhealthacross five specific areas. There exists a lack of consensus among dental personnel andfurther research is warranted to reassess the consensus regarding theefficacy and appropriateness of chemotherapy, organ transplantation, and/or stemcell transplantationinthecontextof treatingdiabeticpatients andthoseinfectedwith HIV. Keywords: Data set, Elderly, Oral health, Primary care system, Warning system 69
Title: Analyze of Root Resorption of Using StandardEdgewiseand Preadjusted Bracket by Panoramic Radiography Lidya Irani Nainggolan¹, Elmadiya Putri Sachnaya br Nainggolan² ¹Department of Radiology Dentistry, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia ²Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia Abstract Objectives: Orthodontic treatment lead influence in improving the teethalignment and occlusal relation to mastication functions, speech andfacial aesthetics becomes better. Edgewise and preadjusted bracket is most commont tool to control tooth movement in ortodontic treatment but during the treatment, external apical root resorption manifest as undesirable complication. Root resorption occurs in different degrees and usually asymptomatic but early detected and the severity canmeasure using panoramic radiographic assessment and using ImageJ software to evaluate the root resorption to avoid or limit the potential damage to the patient. The purpose of this study was to analyze thepresence or absence of root resorption of canine tooth before and after orthodontic treatment, to assessed whether there are differences size of root resorption in canines with edgewise and preadjusted standardbracketorthodontic treatmentsevaluatedfrompanoramic radiography. 70
Material and Methods: This research was analytic with cross-sectional approach, with purposive sampling method. Samples were 40 panoramic radiographs of patients using the standard bracket edgewise andpreadjustedinorthodontictreatmentatUniversitasSumateraUtaraHospital, evaluated by software ImageJ using Linge methods measurements. Dataanalysis testusedindependentTtest.Theresultsobtainedmeanpercentageof root canine resorption in orthodontic treatment of the standard bracket edgewise group was 7.78 ± 3.03 and in the preadjusted bracket group was 9.02 ± 3.24 with p value = 0.013 (p <0.05). Based on the severity of root resorption, all canine teethinthe twobracketgroups were atmoderate level (score2). Conclusion: of this study is that there is root resorption occures after orthodontic treatment with standard edgewise and preadjust bracket evaluated from panoramic radiography, and there are significant differences of root canine resorption that occurred in moderate level. Key Words: Root resorption, Panoramic radiography, Standard edgewisebracket,preadjustedbracket,Orthodontictreatment. Acknowledgement: Thank you for USU and everyone that contributedinthis research. *Correspondence Author : Lidya Irani Nainggolan 71
72 Title: A Pilot Study Inves1ga1ng the Correla1on between Anterior Bite Plane Wearing Time and the Rate of Overbite Change Author and Affilia1on: Thanapat SangwaAanarat¹, Udom Thongudomporn¹ ¹Orthodontic Section, Department of Preventive Dentstry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand. Objectve: The ultimate deep bite correction with a removable anterior bite plane has been recommended to be achieved through full-time wearing. However, the existence of a linear relationship between wearing time and the rate of overbite change remains unproven. This pilot cohort study aimed to investigate the correlation between the duration of wearing a removable anterior bite plane and the rate of overbite change in a group of deep bite growing patients. Materials and Methods: A cohort of 28 growing patients with an initial overbite of ≥4 mm underwent treatment with a removable anterior bite plane equipped with a microsensor to accurately record intraoral appliance presence (TheraMon®, Hargelsberg, Austria). Monthly follow-ups were conducted. Lateral cephalograms were taken at the initial record (T0) and when 2 mm of overbite correction was achieved (T1). Overbite was measured using Dolphin imaging software (Imaging and Management Solu1ons, Chatsworth, Calif, USA), and the rate of overbite change (mm/month) was determined. The average daily wearing time (minutes/day) was calculated for each subject. Spearman’s rank correlation analysis (α = 0.05) was used to explore the relationship between average daily wearing time and the rate of overbite change.
73 Results: The average duration of wearing the removable anterior bite plane was 1278.21 ± 143.94 minutes/day (max, min = 1416.00, 796.80). The average rate of overbite change was 1.32 ± 0.82 mm per month (max, min = 3.53, 0.23). Spearman’s rank correla1on analysis showed a significant correlation between the average daily wearing time and the rate of overbite change (r = 0.464, p < 0.05). Conclusion: Although a statis1cally significant correlation between the average daily wearing 1me of a removable anterior bite plane and the rate of overbite change was found, the strength of the correlation was moderate. The wearing 1me might be one of the multiple factors that may contribute to predicting the success of deep bite correction. Keywords: Deep bite, microsensor, rate of overbite change, removable anterior bite plane, wearing time Acknowledgement: The authors appreciate the grant support from the Graduate School andFacultyof Dentistry, Prince SongklaUniversity.
Title: Assessing Mandibular Arch and Alignment Changes intheInitial Phasesof Orthodontic Deep Bite Treatment: A RandomizedClinical Trial Comparing Two Protocols with Anterior Bite Turbos Author Puttaporn Supanich, DDS Assoc. Prof. Dr.UdomThongudomporn, Ph.D.,MDSc (Orthodontics), DDSDepartment of Preventive Dentistry, Prince of Songkla University, Hatyai, Songkhla, Thailand Academic Year 2022 Objectives: Comparemandibulararchchanges, crowdingalleviation,andincisor inclination changes in adults undergoing deep bite correctionwith two anterior bite turbo protocols: central incisor turbos (IncisorTurb) andupper canine turbos (CanineTurb). Materials and method: Forty-six patients with deep bite issues (mean age: 27.05 ± 4.97 years, overbite: 4.48 ± 0.13mm) were split into twogroups:IncisorTurb(n=23)and CanineTurb(n=23).Intercaninewidth(ICW) and Little’s Irregularity Index were assessed at treatment start (T0) andthe 3rd month (T1) with fixed orthodontic appliances and 0.012” NiTi archwires, using study models. Changes in mandibular incisor inclination between T0 and attainment of normal overbite (T2) were analyzed via cephalometric assessment. Intragroup changes employed Wilcoxon signed rank tests, while intergroup comparisons used Mann-Whitney U tests. Significance level was set at α=0.05 74
Results:Successfulalleviationofdeepbiteoccurredinallparticipantswithinanaverage treatmentperiodof4.89±0.68months. By T1,boththe Incisor TurbandCanineTurbgroupsexperiencednotableincreases inmandibular intercaninewidth(ICW)andreductions inmandibular irregularity (P < .01). At T2, both groups exhibited substantialmandibular incisor proclination(P < .01). The IncisorTurb group exhibited significantly greater mandibular ICWandprotrusioncomparedto the CanineTurbgroup(P < .01). However, thereductioninmandibular irregularitydidnot significantlydifferbetweenthegroups (P ≥ .05). TheIncisorTurbgroupunderwentoverbitetreatment forashorterdurationby0.05months (P<.05). Conclusion: The use of CanineTurb resulted in comparatively smaller alterations in intercanine width when contrasted with IncisorTurb. However, both approaches demonstrated comparable effectiveness inachievinginitial archalignment andaddressingdeepbite concerns. TheIncisorTurb protocol led to a more pronounced increase in mandibular incisor inclinationthantheCanineTurbapproach. KEYWORDS: Mandibular alignment; Little’s Irregularity Index; intercaninewidth;Anteriorbiteturbos; Deepbite ACKNOWLEDGEMENT:Wordscannotexpressmygratitudetomyprofessor andchairofmycommitteeinOrthodonticsection,DepartmentofPreventiveDentistry, Prince of Songkla University for their invaluable patience andfeedback.Ialsocouldnothaveundertakenthis studywithoutmydefensecommittee,whogenerouslyprovidedknowledgeandexpertise. 75
PhamNgoc Thach Medical University Ho Chi Minh City Odonto Stomatology Hospital Dental Clinic Chau A, Ho Chi Minh City Title: Effects of aromatherapy on dental anxiety of patients undergoing surgical removal of wisdom tooth Author and affiliation: Duc Hoang Minh Bui¹*, Phuc Hoai Le¹, Viet Quang Nguyen², Cuc Bui³, Tien Huu Cao1 1. 2. 3. Background: Dental anxiety is one of themost commonglobal obstacles to dental care, especially for patients requiring oral surgery. Lavender essential oil is one of the most effective essential oils in reducing anxiety disorders andsedation. Objectives: To evaluate the effects of aromatherapy on dental anxiety, blood pressure and heart rate in patients during surgical removal of mandibular third molar. Salivary cortisol levels were considered as primary outcome measures. The Modified Dental Anxiety Scale (MDAS) scores, Visual Analog Scale (VAS) pain scores, blood pressure and heart rate, were used as secondary outcomemeasures. Materials and method: Randomized, controlled clinical pilot study witha parallel, prospective design on 30 patients who were undergoingwisdom tooth removal under local anaesthesia, aged 18 to 35, wererandomly divided into 2 groups: group with aromatherapy (15 patients) and group without aromatherapy (15 patients). 60 saliva samples werecollected before, during and after wisdom tooth removal surgery. Parameters of blood pressure, heart rate, dental anxiety scale and theconcentration of salivary cortisol of patients were assessed. Comparisonof all measurements of the control and the affected group was performed byWilcoxon and Mann-Whitney U test. 76
Results: There is no significant difference in MDAS scores and VAS pain scores before and after surgery between two groups. Salivary cortisol levels of the lavender oil group after surgery were not different from the salivary cortisol levels before surgery, the salivary cortisol levels of the control group after surgery increased compared to the salivary cortisol level before surgery. The mean systolic and diastolic blood pressure after anesthesia of lavender oil group were lower than the control group by 5.37 mmHg and 4.94 mmHg, respectively (p < 0.05). The average pulse rate at the time before and after anesthesia of the lavender oil group was lower than the control group by 5.95 bpm and 7.76 bpm, respectively (p < 0.05). Conclusion: Aromatherapy during third molar surgery has initially shown the ability to reduce dental anxiety and control blood pressure and heart rate for patients. Keywords: Dental anxiety, third molar surgery, aromatherapy, salivary cortisol, blood pressure. 77
78 Title: Effect of the compressive force combined with vibration on the correlation of CCL2 mRNA expression and protein secretion in human periodontal ligament cells. Author and Affilia1on: Supunsa Pongtiwattanakul¹, Sissada Tannukit², Chidchanok Leethanakul¹ ¹Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand. ²Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand. Objec1ve: This study aimed to investigate the relationship between CCL2 mRNA expression and protein secretion in PDL cells after exposure to mechanical vibration combined with compressive force. Materials and Methods: PDL cells were isolated from the middle third of the premolar roots and extracted from 3 healthy subjects (aged 17–25 years). The compressive force of 2.0 g/cm2 and mechanical vibration of 30 Hz, 0.3 g for 20 minutes were applied. CCL2 mRNA expression and protein secretion were investigated using Real-time PCR and ELISA, respectively. Spearman’s rank correlation analysis (α = 0.05) was performed to find the correlation between CCL2 mRNA expression and protein secretion. Results: There was no correlation between CCL2 mRNA expression and protein secretion (p>0.05, r=0.012).
79 Conclusion and discussion: CCL2 mRNA expression and protein secretion showed no correlation. It might be many factors involved in protein secretion including intracellular mechanisms such as post-translational and/or co-translational translocation, mechanisms of intracellular secretion, etc. Keywords: CCL2, compressive force, PDL cells, vibration Acknowledgement: The Graduate School, Research Unit, and Faculty of Dentistry, Prince Songkla University supported research grant.
Title: Determinants influencing the high caries status of 3-year-old children in Pattani Province, Thailand Narim Tokanee; Apiradee Lim, PhD*; Arinda Ma-A-Lee, PhD* Corresponding author Department of Mathematics and Computer Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, 94000, Thailand Objective: This study aimed to identify the factors that influence thehigh caries status of 3-year-old children in Pattani Province. Materials and Methods: A retrospective cohort study of 3-year-olds who received oral health services at the Well Child Clinic in Pattani Province, Thailand, was conducted. Sociodemographic and dental datawere collected, and caries status was recorded in accordance with theWHO dental examination standard. The data was obtained throughthe Health Data Centre system. A logistic regression model was used todetermine the factors that influence the high caries status. Results: The study included 3,735 children, of which 15.8% had a highcaries status. The results of the univariate analysis showed that several determinants were associated with high caries status, includinggender, parental occupation, districts, frequency of parental toothbrushing training, and frequency of fluoride varnish application. Themultivariate analysis showed that high caries status was significantly associated with the father's occupation, districts, frequency of parental tooth brushing training, and frequency of fluoride varnish application. 80
Conclusion: To prevent early childhood caries parental education on toothbrushingandfluoride varnishapplicationshouldbepromoted. Keywords: dental caries, preschool children, oral health, risk factor, sociodemographic status. Acknowledgment: We would like to acknowledge the support and guidance provided by our advisors throughout this research project. Additionally, we extend our gratitude to Pattani's Provincial Public Health Office who generously supported the dataset. This research was made possible through funding from the Department of Mathematics and Computer Science, Faculty of Science and Technology, Prince of Songkla University. 81
Title: The effect of cantilever length in posterior implant position on the accuracy of static computer-assisted implant surgery: A pilot study Author and Affiliation: Marina Miyashita¹, Narit Leepong¹, Srisurang Suttapreyasri¹ ¹Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince of Songkla University, Hatyai, Thailand Background: The deviation of implant placement can occur in any areas of the dental arch especially in distal free-end partially edentulous area of the posterior region. Moreover, multiple implants placed in this long span cantilever are risking more deviations. Until now, there is no study that observe the impact of distance from mesial neighboring tooth, or in this study called the cantilever length, and the deviation of actual implant placed in that area. Objective: The aim of this pilot study was to evaluate the effect of cantilever length on the accuracy of implant placement with static computer-assisted surgery (CAIS) in posterior distal free-end partially edentulous area. Materials and Methods: Twenty partially edentulous patients, requiring 39 implants in posterior regions were studied and assigned into three study groups: Group 1 – Tooth-supported group (n=13), Group 2 – One-unit cantilever (n=13) and Group 3 – Two-unit cantilever (n=13). All participants underwent treatment using fully guided static CAIS. The assessment involved analyzing linear and angular deviations between the initially planned implant positions and the actual implant placements at the levels of both implant platform and implant apex. Statistical significance was determined for P values less than 0.05. 82
Results: Group 1 exhibited the lowest deviation across all evaluation parameters. The mean angular deviations were 3.00±1.76°, 4.62±1.88°, and 3.99±2.23° for group 1, 2, and 3, respectively, but these differences did not reach statistical significance. The mean platform deviations of group 2 and 3 (1.05±0.40 mm and 1.08±0.43 mm, respectively) increased with the longer cantilever lengths, but no statistically significant difference was found. Additionally, the mean apical deviations were measured as 1.12±0.43 mm, 1.75±0.41 mm, and 1.50±0.60 mm for group 1, 2, and 3, respectively. Notably, a statistically significant difference was observed between group 1 and 2. Conclusions: Within the limitations of this pilot study, implant placed in posterior distal free-end partially edentulous area demonstrated a higher deviation between the planned and the actual placed implant positions, compared with a tooth-supported edentulous area. The cantilever length did not show significant impact on the accuracy of implant placement. However, additional collection of data should be performed for further investigations. Keywords: Implant, Accuracy, Static Computer-Assisted Implant Surgery, Cantilever length Acknowledgement: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince of Songkla University. The authors declare no conflict of interest. 83
Created the model that was made from paper board for the proper scale of the Universal occlusal plane analyzer Drawing 2D and 3D model by AutoCAD program (file .DWG) 3D Printing by Reality Ender-3 used material Polylactic acid (PLA) Metal lathe for improve strength of material Insertion of the Universal occlusal plane analyzer be attached to the upper member of the articulator. Using a divider to determine a radius of the sphere in the curve of Spee. (4 inches normal and most often used in majority of cases especially for Class Irelationships, 3.75 inches for skeletal Class II relationships and 5 inches forskeletal Class III relationships4) The anterior survey point from distoincisal of the canines, the posterior survey point is selected at the distobuccal cusp of the lower last molar. An alternative P.S.P would be the anterior border of the condyle, represented by the most anterior point on the condylar element on the articulator. Title: Universal Occlusal Plane Analyzer Author and Affliation: Miss Phakaporn Mutaporn Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen 40002 Thailand Objective: To invent a Universal occlusal plane analyzer that can be used with every semi-adjustable articulator brand (HanauTM Modular, Denar® Mark II, Whip Mix and SAM3) for determining the proper occlusal plane. Methods: 1. 2. 3. 4. 5. 6. 7. 84
8.Draw two lines on a plastic record card and find their intersection point. Place the divider, still adjusted to the same radius, at the intersection point on plastic record cards, and another arm of the divider determines curve of Spee on lower posterior tooth 9. After multiple trials, the best survey center with the best line and plane of occlusion will be found and marked for relocation. 10. Thescribingknifeisplacedintothedivider tocutplaster, compound, or wax during occlusal plane correction Conclusion: TheapplicationofMonson's theoryprovidesmostlyasastarting point for the analysis. Patients are of various sizes and shapes, and their mandibular incisors are improperly positioned.Dentists can incorporate the Universal occlusal plane analyzer into their practices. The Universal occlusal planehasbeenadaptedtoanumberofarticulatorsystems. Keywords: Occlusal plane, Occlusion analyzer Acknowledgement: Thank you to the Professor who provided guidance and supported the concept of creating these devices. I appreciate you attempting to complete it. I hope that this work will benefitme as well as others. 85
ANDAMAN DENTAL CONGRESS
Poster presentation ADC 2023 87
Title: Aesthetical Crown Lengthening: A Case Report Pitu Wulandari¹, Muhammad Irfan Siregar², Irma Ervina¹, Filya Suri Riski Nababan² ¹Department of Periodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia ² Periodontics Residency, Department of Periodontics, Faculty of Dentistry, Universitas Sumatera Utara, Medan, Indonesia Objective: This case report describes the crown lengthening procedure tocreate more tooth structure above the gum line, allowing for restorativeand proper placement of dental crowns to improve aesthetics and better oralhygienemaintenance. Case Report (Clinical technique): The first case-patient referred fromDental Conservative Installation of Dental dan Oral Hospital Universitas Sumatera Utara comprising 30 years old female and had an unevengingival margin between the right central and lateral incisors and theleft central and lateral incisors. The second case-patient was referredfrom Prosthodontics installation of Dental and Oral Hospital Universitas Sumatera Utara comprising 20 years old female aesthetic crown fittingneeds. Before carrying out a gingivectomy, a resin surgical templatepatient paired to guide and mark the gingival area and then removedthe gingiva with gingivectomy surgery using a scalpel. After removingthe gingival, mechanical debridement and osteotomy were also doneand application of Tetracycline gel and Hyaluronic Acid 0,12% on thesurface of the alveolar and mucous site to get better healing. Thesecond case presents the aesthetical crown lengthening by usinggingivectomy and osteotomy. For the second case, the guide andmarking of the gingival area using Chu's Gauges. After surgery, bothpatients were instructed post operative treatment and oral hygiene maintenance. 88
Aesthetic crown lengthening in a healing period of one to two months clinical observations were done to check for regeneration in the site. Both cases showed good results and were referred to restorative andprosthodontic treatment for further treatment. Conclusion: It can be concluded that aesthetic crown lengtheningfor restorative and prosthodontics treatment can improve aesthetics and improve oral hygiene maintenance for the gum. Keywords: Crown lengthening, aesthetics, gum, surgical templateAcknowledgement: Thank you for All Staff in Department of Periodontic, Faculty of Dentistry Universitas Sumatera Utara and All Staf in Dental andOral HospitalUniversitasSumateraUtara 89
90 Title: The Correction of Root Convergence for ProstheticallyDriven Implant Planning; A Case Report Anuwat Pramungkata¹, Kirawut Luengtrakoon² Professional and academic institute: Presenter¹, Lecturer², Department of Prosthodontics, Facultyof Dentistry, Khon KaenUniversity, Khon Kaen40002, Thailand Objective: The objective of this article is to present a multidisciplinary approach employed to correct root convergence, facilitating optimal implantplacement. Case report: A 21-year-oldfemalepatientpresentedat the Prosthodontic clinic witha concern about a missing maxillary right lateral incisor. Implant planning was performed with CBCT. A 3 mm-diameter, 10 mmlength BEGO RSX-line implant was selected. The distance between themaxillary right central incisor and canine was 6mm at the crownand5 mm at the root. Unfortunately, the root convergence between themaxillary right central incisor and canine posed limitations on implant placement. Subsequently, Thepatient was referred tothe Orthodontic clinicforadjunctivetreatment.After4visitsoffixedapplianceoforthodontic treatment, root parallelism was verified using a periapical radiograph. Then, the patient was returned to the Prosthodontic clinic with the prepared space for implant placement. The orthodontic bracket remainedinplaceuntil thedefinitiveprosthesiscouldbe completed.
91 Result: After 4 visits of orthodontic treatment, the distance betweenthe maxillary right central incisor and canine was 6 mm at the crownand 7.5 mm at the root. With the achieved alignment, the patient becamesuitable for implant placement and subsequent prosthesis fabrication. Conclusion: Root convergence, which limits the space for implant placement, must be corrected to reduce any harm to root surface during the implant placement procedure. The success of thecorrection requires an effective and clear communication betweeninterdisciplinary departments. Keywords: Implant, Multidisciplinary Approach, Orthodontic Treatment, Root Convergence
92 Title: Autophagy is a crucial mechanism of ZOL mediated anti inflammatory osteoclastogenesis Yuting Cheng ¹ ,² Chidchanok Leethanakul ¹ Jian Liao ² ¹FacultyofDentistry,PrinceofSongklaUniversityHatYai,Songkla,Thailand90110 ²School/HospitalofStomatology,GuizhouMedicalUniversity,Guiyang,Guizhou 550004,P.R.China Abstract Purpose: Peri implantitis is a prominent risk factor for implantation failure. Zoledronic acid (ZOL) has been used clinically to treat bone related diseases and is a high efficiency bone resorption inhibitor. However, the specific mechanism o f inflammatory bone loss alleviation by ZOL remains to be elucidated. We hypothesized that ZOL relieves inflammator y bone loss by modulating autophagy and suppressing the NOD like receptor family pyrin domain containing protein 3 (NLRP3) signalling pathway. Methods: First, RAW264.7 cells were stimulated by lipopolysaccharide (LPS) after being pretreated with various concentrations of ZOL. Cell viability was determined by a Cell Counting Kit 8 (CCK8) assay; osteoclast (OC ) differentiation, formation and function were evaluated by tartrate resistant acid phosphatase (TRAP) staining, F-actin ring staining and bone resorption pit assays , respectively We observed autophagosomes by transmission electron microscopy ( To further explore the corresponding molecular mechanism underlying anti‑inflammatory bone resorption the mRNA expression of osteoclast related molecules and the protein expression of autophagy-related proteins and
93 NLRP3 signalling pathway factors in pre -OCs were evaluated by reverse transcription‑quantitative PCR (RT‒qPCR) and W estern blot (WB) analysis. Results: The results showed that ZOL inhibited LPS induce OC differentiation, formation, bone resorption activity and the level of autophagosomes. Furthermore, ZOL attenuated OC-related gene expression and significantly suppressed autophagy by downregulating LC3 II and Beclin1 and upregulating P62 under inflammatory conditions and NLRP3-related protein expression Conclusion: Overall, the findings of this study indicate that autophagy is a crucial mechanism of ZOL-mediated inhibition of osteoclast activity and function under inflammatory conditions and show that the NLRP3 signalling pathway participates in this process. Keywords: zoledronic acid; autophagy; NLRP3; osteoclast; inflammatory bone resorption Acknowledgements: The present study was supported by the Natural Science Foundation of China Grant numbers 82260198 and 82060207).
94 Title: Predictable implant placement and restoration via a combination of digital and conventional workflow Orapun Chansathien, DDS, Prof.Dr.Niwut Juntavee Departmentof Prosthodontics,Facultyofdentistry Khon Keanuniversity Nowadays dental implants are very popular in dentistry because of high success rate, atraumatic procedure, less time consumption, and affordableprice.Inthepast, theplacementofimplant couldbedone with a conventional technique. It requires many steps and leads to surgical complicationssuchasincorrectpositionanddamagetoadjacentanatomic structure. Currently, technologies areimprovedforgreater accuracy,more convenient and reduce time consumer such as computer aided design/ computer aided manufacturing (CAD/CAM), cone-beam computed tomography (CBCT) andintraoral scanner, thereforeadigital workflow has become very popular. The intraoral structures are recorded by using an intraoral scanner. A virtual crown is designed as a template of final restoration, and superimposed these files with CBCT to locate the proper implant position and size. Lastly, a surgical guide can be designed and fabricated with a 3D printer immediately. This case report illustrates the combinationofdigitalandconventional techniqueforpredictableimplant placement andrestoration. Clinical technique: After dental examination and history taking, it presented a normal edentulous ridge area of 14. The patient was sent to undergo CBCT. Intraoral scan was performed by using trios3, 3Shape. The impressions were taken with alginate, poured the casts and waxed full contour crown correspond with adjacent teeth. Then the model was scannedandsuperimposedwithintraoralfilesanddesignedavirtualcrown following wax up model, selected virtual implant, and planed position. Designedandprintedthe surgicalguide with3Shape implant studio.
95 After guided implant placement, the implant was scanned with an intraoral scanner to fabricated a zirconia crown. This crown was designed accordance to the diagnostic wax up model. Periapical radiograph was performed after fixed the crown on the implant. Result: The radiograph after completed treatment showed the implant was placed in the correct position as planned in the implant planning program. A zirconia crown on implant was the same appearance as shown in the diagnostic wax up model. The patient was satisfied with her restoration and had more confidence in smiling. Conclusion: The advantages of digital workflow dental implants are reducing the possibility of surgical complications and faster treatment compared to conventional method. The Diagnostic wax up model is a template for final restorations, and can be used to communicate between dentists and patients to represent the desired treatment outcome. The combination of digital and conventional workflow is a useful method to enhance the patient’s satisfaction with the treatment outcome. Keywords: predictable implant placement, single implant, digital implant
96 Title: Impression technique for implant retained overdenture Authors: Chonnapha Phattanaphirom¹, Daraporn Sae-lee², Danai Yodsuwan³, Suwit Limpattamapanee⁴ Professional and academic institute: Presenter¹, Associate Professor Dr.² , Associate Professor³ , Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen 40002, Thailand Dr., Nakhonratchasima Health Provincial Office, Nakhonratchasima 30280, Thailand⁴ Introduction: Currently, implant retained overdenture was accepted to be the treatment of choice, especially in the severe alveolar bone loss of mandible. Therearemany advantages of implant retained overdenture, e g.., gaining more stability and retention and improving the patient s masticatory function. However, choosing the eligible impression method may affect thestability andretentionof severealveolarboneloss cases. Material and Methods: The modified impression technique called all green technique was chosen for the patient who presented with severe alveolar bone loss ofmandible. The purpose of this technique was to gain amaximumcoverage of residual ridge to enhance thedistributionofbite force toward the load bearing area, in particular, the buccal shelf and the residual alveolar ridges The preliminary impression of the edentulous arch was made by using irreversible hydrocolloid impression material with a metal stock tray. The impression was poured with type III dental stone. The individual tray was fabricated by using light cured acrylic resin and the border was designed shorter fromthe vestibule 2mm. Bordermoldingof themandibular arch wasperformedbymeltingthegreenstickcompoundtoahomogenous
97 massandloadingontheindividualtray.Thegreenstickcompoundactedasa tissue stopper while taking final impression. To imitate soft tissue for the final impression,thelightbodypolysulfidematerialwasused Results: After the overdenture was delivered on mandibular arch, the dentureboundary was verified withpolyvinyl siloxanematerial andit was very precise. The patient could perform chewing with high stability and retentionof thedenture Conclusion: In conclusion, the optimum stability and retention in severe alveolar bone loss of mandible could be established from both implant retainedandaproper impressiontechnique. Keywords: modified impression technique, severe alveolar bone loss of mandible, implant retained overdenture, all green impression technique
98 Title: Three-dimensional printed root-form polycaprolactone -biphasic calcium phosphate scaffold using for alveolar ridge preservation Author and Affiliation: Woraluk Srimanok¹, Nuttawut Thuaksuban¹ ¹Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince of Songkla University, Hatyai 90112, Thailand Objective: To assess physical properties of the three-dimensional (3D) printed root-form polycaprolactone (PCL)-biphasic calcium phosphate (BCP) scaffold in vitro. To assess biocompatibility and efficacy of the scaffolds for alveolar ridge preservationprocedure inclinical trial. Materials and Methods: The root-form PCL-30%BCP scaffolds were fabricatedusing3D printingtechnique. Thephysicalproperties including microscopic architecture and mechanical strength of the scaffolds were evaluated in vitro. For the clinical trial, the scaffolds were used for the alveolar ridge preservation (ARP) prior to dental implantation in four patients. For each patient, after administration of local anesthesia, an unrestorable tooth was extracted. The scaffold was cut and trimmed to fit the size of the tooth socket, and then it was press-fit into the socket bone. Afterwards, the wound was sealed with absorbable collagen matrix and secured with absorbable suture. Post-operative clinical and radiographic evaluation was performed over four months of the followupperiod.
99 Result: The scaffolds had suitable pore size and interconnecting pore system for supporting new bone regeneration. The superior aspects of the scaffolds could withstand vertical compression forces up to 300 N. The clinical result demonstrated that the socket wounds spontaneously healed without signs of foreign body reaction and infection. However, slight wound dehiscence was detected in one patient at 2 weeks postoperatively. After trimming some exposed parts of the scaffold, the wound completely healed. The radiographic result demonstrated that dimensions of the sockets after ARP slightly changed when compared with those of the pre-operation (p>0.05). Conclusion: The 3D printed root-form PCL-30%BCP scaffolds had suitable physical properties and biocompatibility for clinical use. Keywords: Scaffold, Polycaprolactone, Biphasic calcium phosphate, Alveolar ridge preservation Acknowledgement: The Cranio-Maxillofacial Hard Tissue Engineering Center, Faculty of Dentistry, Prince of Songkla University and Program Management Unit Competitiveness (PMUC).
100 Title:Two-visitcomputerizedcompletedentureonmaxillarydefect Author and Affiliation: Saowaluck Treesong¹, DDS, PithiwatUasuwan², DDS,MSc, PhD ¹Post-graduate student inMSc (Prosthodontics),Faculty of Dentistry, Khon KaenUniversity ²Lecturer, Department of Prosthodontics,Facultyof Dentistry,KhonKaen University Objective: To provide an alternative treatment workflow for 2 visits digital denture Case report The fabrication of complete dentures using conventional methods requires several laboratory and clinical procedures. Multiple visits are required for treatment, including examination and primary impressions, Biteblock try inandbite registration, toothtry in, anddelivery. Therefore, it is timeconsumingandconsequentlydiminishthequalityoflifeof thepatient. Currently, computer aided design/computer aided manufacturing (CAD/CAM)hasbeendevelopedfor thedesignandfabricationof complete dentures. The aim of this case report is to provide the clinical and laboratory steps for obtaining 2-visits complete dentures by modifying existing dentures as a blueprint. Rather than following the conventional complete denture steps or duplicating existing dentures, the authors decided to modify the existing dentures and prepared them to be a blueprint for the final dentures via the application of digital dentistry. Seventy-three-year-old Thai female presented with ill-fitting existing maxillary and mandibular complete dentures. The defect on maxillary palate connecting to the nasal cavity was detected and the tissue was completelyhealedaftermaxillofacialsurgeryforsevenyears(fig.1)