Journal List > Korean J Orthod > v.41(5) > 1043680

Lee, Yang, Lee, Kim, Shim, and Chung: A study on the prevalence of dental anomalies in Korean dental-patients

Abstract

Objective

The purpose of this study was to investigate the prevalence of dental anomalies in outpatient clinics.

Methods

The subjects of this study were 3,133 patients who visited the clinic between January 2009 and June 2011. The dental records and panoramic films of the patients and detection of supernumerary, missing, and impacted teeth, transposition, and peg lateralis were reviewed. The results were analyzed according to gender and types and locations of dental anomalies.

Results

Among the patients, 362 had dental anomalies, with a prevalence rate of 11.55%. Congenital missing teeth (5.71%) ranked first in the categories, and impacted teeth (3.09%) ranked second. The percentage of patients having supernumerary teeth, peg lateralis, and dislocated teeth were 1.79%, 1.66%, and 0.45%, respectively.

Conclusions

Congenital missing teeth and impacted teeth are, respectively, the first and second most common dental anomalies in Korean dental patients.

Figures and Tables

Fig. 1
Panoramic radiograph showing several dental anomalies. A, Impacted maxillary right canine, peg lateralis of both maxillary lateral incisors; B, impacted supernumerary tooth and impacted mandibular right first premolar.
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Table 1
Distribution of subjects in the study
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Table 2
Distribution and prevalence of developmental dental anomalies in the subjects
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The number of dental anomalies and the number of patients are different because there were some patients who had two or more anomalies. Every patients was counted as 1 regardless of the number of anomalies she/he had.

Table 3
Distribution and location of congenital missing teeth
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Table 4
Distribution and location of supernumerary teeth
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Table 5
Distribution of peg lateralis
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Table 6
Distribution and location of impacted teeth
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