International Journal of Experimental Dental Science

Register      Login

VOLUME 2 , ISSUE 1 ( January-June, 2013 ) > List of Articles

RESEARCH ARTICLE

Frequency and Distribution of Dental Anomalies in Iran: A Radiographic Survey

Maryam Tofangchiha, Somayyeh Azimi, Masoud Neirizi

Citation Information : Tofangchiha M, Azimi S, Neirizi M. Frequency and Distribution of Dental Anomalies in Iran: A Radiographic Survey. Int J Experiment Dent Sci 2013; 2 (1):14-17.

DOI: 10.5005/jp-journals-10029-1032

Published Online: 01-06-2015

Copyright Statement:  Copyright © 2013; The Author(s).


Abstract

Aim

Many epidemiological studies have been performed around the world in order to determine the frequency of different types of dental anomalies. There are regional and ethnic variations in the prevalence of dental anomalies.

To determine the prevalence of developmental and acquired dental anomalies in Iran, study was done from 2011 to 2012.

Materials and methods

A total of 1,000 digital panoramic radiographs of patient were evaluated which consisted of 424 (42/4%) male and 576 (57/6%) female. Data were analyzed by Chi-square and Fisher exact tests.

Results

Wisdom tooth impaction was the most prevalent anomaly (41.4% in females and 36% in males) followed by missing (8.7% male, 7/3% female), microdontia (3.2%), dilacerations (2.2%), macrodontia (1%), supernumerary teeth (0.8%), fusion and taurodontism (0.2%). A case of bilateral second mandibular molar impaction was observed. Germination, transposition and concrescence were not observed. Among the acquired anomalies, hypercementosis (0.6%) and internal resorption (0.4%) were the most prevalent respectively. External resorption was not observed.

Conclusion

Comparison of these results with those of other studies, showed that the frequency of these disorders were different in countries and communities around the world. Knowledge about these anomalies may facilitate the endodontic, prosthodontics, periodontics and surgical management of such teeth.

How to cite this article

Tofangchiha M, Azimi S, Neirizi M. Frequency and Distribution of Dental Anomalies in Iran: A Radiographic Survey. Int J Experiment Dent Sci 2013;2(1): 14-17.


PDF Share
  1. Oral radiology, principles and interpretation (6th ed). St. Louis: Mosby 2009:295.
  2. A radiographic and clinical survey of dental anomalies in patients referring to Shiraz Dental School. Shiraz Univ Dent J 2010;10:26-31.
  3. Essential endodontology. Chapter 6. Blackwell Science 1998:131-56.
  4. Oral radiology principles and interpretation (6th ed). Chapter 5. St. Louis: Mosby; 2009:117-45.
  5. The prevalence of dental anomalies in the Western region of Saudi Arabia. ISRN Dent 2012 Jun;2012(2012):1-5.
  6. Incidence of impacted and supernumerary teeth–a radiographic study in a North Greek population. Med Oral Patol Oral Cir Bucal 2011 Jan;16(1):56-61.
  7. Morphological and numerical characteristics of the Southern Chinese dentitions. Part I: Anomalies in the permanent dentition. Open Anthropol J 2010;3:54-64.
  8. Prevalence of dental developmental anomalies: A radiographic study. Community Dent Health 2007;24(3):140-44.
  9. Frequency of developmental dental anomalies in the Indian population. Eur J Dent 2010 Jul;4(3):263-69.
  10. Prevalence and distribution of dental anomalies in orthodontic patients. Am J Orthod Dentofacial Orthop 2007;131(5):510-14.
  11. Non-syndromic hypodontia in an Iranian orthodontic population. J Oral Sci 2010;52:455-61.
  12. Supernumerary teeth amongst Iranian orthodontic patients. A retrospective radiographic and clinical survey. Acta Odontol Scand 2011;69:125-28.
  13. Prevalence and distribution of dental anomalies in pretreatment orthodontic Thai patients. KDJ 2010 Jul-Dec;13(2):92-100.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.