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749: Prevalence and distribution of dental anomalies in orthodontic patients

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ORTHODONTICS The art and practice of dentofacial enhancement …

ORTHODONTICS The art and practice of dentofacial enhancement
Spring Summer 2012 Volume

Published in: Health & Medicine, Business
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  • 1. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES IN ORTHODONTIC PATIENTS Mona A Montassera and Mahasen Tahaaa Lecturer of Orthodontics - Mansoura University, Mansoura, Egypt
  • 2. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES Outline: - Introduction - Objectives - Materials and Methods - Results - Discussion - Conclusions INTRODUCTION
  • 3. INTRODUCTION
  • 4. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESDental anomalies in number, dimension,morphology, position, or structure are ofimportance for both patients andorthodontists.Meticulous examination is required todiagnose and manage cases with dentalanomalies. INTRODUCTION
  • 5. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESThe etiology of dental anomalies could begenetic or environmental.Different studies showed differentpercentages of dental anomalies.2-4 Acommon point was the unavoidablefrequency of developmental dentalanomalies in every community.5 INTRODUCTION
  • 6. OBJECTIVES
  • 7. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESThe objectives of this study were to surveythe prevalence and distribution of dentalanomalies in a sample of Egyptianorthodontic patients. OBJECTIVES
  • 8. MATERIALS AND METHODS
  • 9. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESThis study was designed as a retrospectivestudy.The study included examination ofrecords of orthodontic patients whoattended the orthodontic clinic duringthe period from 2007-2010 and met theinclusion criteria. MATERIALS AND METHODS
  • 10. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESStudy sample: The study included the following sample: 509 Egyptian orthodontic patients 312 female 197 male Age range from 14-21 MATERIALS AND METHODS
  • 11. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESStudy records: The study focused on examining the following records:- Pretreatment study casts.- Panoramic and periapical x-rays.- Intraoral photographs.- Anamnestic data. MATERIALS AND METHODS
  • 12. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESDental anomalies: The study focused on the following anomalies:• Anomalies in number: agenesis, extra-teethincluding: supernumerary, supplementary, and mesiodens.(2) Anomalies in shape and size: fusion,gemination, peg shaped laterals, microdontia, macrodontia,dilacerations, accessory roots.(3) Anomalies in position: ectopic eruptionincluding: transposition, improper angulation, impaction.(4) Anomalies in structure: amelogenesisimperfecta, dentinogenesis imperfecta. MATERIALS AND METHODS
  • 13. RESULTS
  • 14. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESTable I. Prevalence and distribution of dental anomalies Female Male TotalAnomalies in number:Hypodontia (other than third molars) 7 5 12Hyperdontia 8 6 14Anomalies in shape and size:Fusion 0 0 0Gemination 0 1 1Microdontia&Peg shaped laterals 6 4 10Macrodontia 2 0 2Dilaceration 0 2 2Accessory roots 1 0 1Anomalies in position:Impaction 42 23 65Ectopic eruption 31 24 55Anomalies in structure:Amelogenesis imperfecta 3 1 4Dentinogenesis imperfecta 0 0 0 RESULTS
  • 15. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESTable 2. Prevalence and distribution of impacted teeth Female Male Total Second premolars 27 9 36 First premolars 2 0 2 Canines 10 8 18 Central incisors 3 6 9 RESULTS
  • 16. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESTable 3. Prevalence and distribution of ectopically erupted teeth Female Male TotalLabioversion 22 11 33Abnormal angulation 8 11 19Transposition 1 2 3 RESULTS
  • 17. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESTable 4. Prevalence and distribution of third molar agenesis Female Male Total Maxillary 24 19 43 Mandibular 17 9 26 All third molars 8 1 9 RESULTS
  • 18. DISCUSSION
  • 19. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESEvidence-based dental practicedemands integrating systematicassessments of clinically relevantscientific evidence with clinicalexpertise and the patient’s treatmentneeds and preferences.6 DISCUSSION
  • 20. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESWhether dental anomalies were studied inthe whole population, orthodontic patients,or orthodontic patients with specificcomplaints could influence the results.This study included orthodontic patientswith no syndromes and no history ofprevious orthodontic treatment. DISCUSSION
  • 21. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESIn the current study impaction of teeth wasthe most common dental anomaly, otherthan agenesis of third molars.Early extraction of primary teeth andspace loss, changes in the overlyingkeratinized tissue, and/or changes in theangulation of the impacted tooth aresuggested causes.7,8 DISCUSSION
  • 22. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESIn the current study agenesis of maxillarylateral incisors was the most commonfollowed by agenesis of mandibular secondpremolars.However, in other studies9,10 mandibularsecond premolars was found to be themost commonly missed tooth. DISCUSSION
  • 23. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESExtra teeth were detected in 2.8 percentof the patients; 75.0 percent were in theanterior region and 25.0 percent werepremolars.In an Iranian orthodontic population theprevalence was 0.74 percent.11 In aSwiss population 86.0 percent of extrateeth were in the maxillary anteriorteeth.12 DISCUSSION
  • 24. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIESThe only structural anomaly that wasdetected in the current study wasamelogenesis imperfecta.The primary clinical problems ofamelogenesis imperfecta are toothsensitivity, loss of occlusal verticaldimension, dysfunction, andesthetics.13 DISCUSSION
  • 25. CONCLUSIONS
  • 26. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES1- The findings of this study provide aguide for clinicians during orthodonticexamination to detect dental anomalies.2- Environmental factors could havemore important influence on theprevalence of dental anomalies thangenetic and racial factors in everypopulation. CONCLUSIONS
  • 27. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES3- Impaction, ectopic eruption,hyperdontia, hypodontia, and microdontiawere the most common dental anomalies.4- Gemination and secondary roots werethe least detected dental anomalieswhile, fusion and dentinogenesisimperfecta were not detected at all. CONCLUSIONS
  • 28. REFERENCES
  • 29. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES1-Uslu O, Akcam M O, Evirgen S, Cebeci L. Prevalence of dental anomalies in variousmalocclusions. Am J Orthod Dentofacial Orthop 2009;135:328-335.2-Gupta SK, Saxena P, Jain S, Jain D. Prevalence and distribution of selecteddevelopmental dental anomalies in an Indian population. J Oral Sci 2011;53:231-8.3-Thongudompom U, Freer TJ. Prevalence of dental anomalies in orthodontic patients.Aust Dent J. 1998;43:395-398.4-Guttal KS, Naikmasur VG, Bhargava P, Bathi RJ. Frequency of developmentaldental anomalies in the Indian population. Eur J Dent 2010;4:263-269.5-Altug-Atac AT, Erdem D. Prevalence and distribution of dental anomalies inorthodontic patients. Am J Orthod Dentofacial Orthop 2007;131:510-514.6-Turpin DL. Looking for the highest level of evidence. Am J Orthod Dentofacial Orthop2009;135:687.7- Proffit WR, Fields HW, Contemporary orthodontics. 4th ed. St Louis:Mosby;2007 pag130,140,141,264,450,472. REFERENCES
  • 30. PREVALENCE AND DISTRIBUTION OF DENTAL ANOMALIES8-Bryan RA, Cole BO, Welbury RR. Retrospective analysis of factors influencing theeruption of delayed permanent incisors after supernumerary tooth removal. Eur JPaediatr Dent 2005 ;6:84-89.9-Endo T, Ozoe R, Kubota M, Akiyama M, Shimooka S. A survey of hypodontia inJapanese orthodontic patients. Am J Orthod dentofacial Orthop 2006;129:29-35.10- Nordgarden H, Jensen JL, Storhaug K. Reported prevalence of congenitallymissing teeth in two Norwegian counties. Community Dent Health 2002;19:258-261.11- Vahid-Dastjerdi E, Borzabadi-Farahani A, Mahdian M, Amini N. Supernumeraryteeth amongst Iranian orthodontic patients. A retrospective radiographic and clinicalsurvey. Acta Odontol Scand. 2011;69:125-128.12-Schmuckli R, Lipowsky C, Peltomäki T. Prevalence and Morphology ofSupernumerary Teeth in the population of a Swiss Community. Schweiz MonatsschrZahnmed. 2010;120:987-990.13- Canger EM, Celenk P, Yenisey M, Odyakmaz SZ. Amelogenesis imperfect,hypoplastic type associated with some dental abnormalities: a case report. Braz Dent J2010;21:170-174. REFERENCES
  • 31. THANK YOU

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