Korean J Orthod.  2011 Oct;41(5):346-353. 10.4041/kjod.2011.41.5.346.

A study on the prevalence of dental anomalies in Korean dental-patients

Affiliations
  • 1Department of Orthodontics, Hallym University Sacred Heart Hospital, Korea. orthobhy@gmail.com
  • 2Department of Orthodontics, School of Dentistry, Dankook University, Korea.
  • 3Department of Oral and Maxillofacial Radiology, Hallym University Sacred Heart Hospital, Korea.
  • 4Department of Conservative Dentistry, Hallym University Sacred Heart Hospital, Korea.

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.

Keyword

Tooth impaction; Agenesis; Transposition; Tooth number

MeSH Terms

Dental Records
Humans
Outpatients
Prevalence
Tooth
Tooth, Impacted
Tooth, Supernumerary

Figure

  • 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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