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Ⅴ. 결론
참 고 문 헌
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부 록
부록 1. 기관연구윤리심의위원회(IRB) 승인서
[ABSTRAT]
A Study on the prevalence and incidence of impacted teeth in Korean
Se-Jeong Jeon Graduate School of Public Health
Ajou University
(Supervised by Professor Kyung Yen Nahm, D.D.S., M.S.D., Ph.D.)
Purpose : To investigate the prevalence, incidence, and bilateral occurrence of impacted teeth in Koreans.
Materials & Methods : From January 2010 to December 2015, we retrospectively reviewed the Korean patients who visited the Department of Orthodontics, Dental Hospital, Ajou University Hospital. The patient's initial electronic chart and panoramic radiographs were used to evaluate the diagnosis of the impacted tooth, the eruption pattern of the opposit impacted tooth of the impacted tooth On panoramic radiographs, only complete impaction of the permanent tooth was included, and impaction of the deciduous tooth, supernumerary tooth, third molar and systemic disease, if the permanent tooth is not erupted due to the retention of the deciduous tooth, but the eruption of the permanent tooth is expected when the
deciduous tooth is extracted were excluded from the study.
Results : The prevalence rate was 16.7% and there was no statistically significant difference between to gender(
p
=0.745). The frequency of occurrence by age was the highest 57.7% under 12 years with statistically significant difference(p
=0.001). The average number of impacted tooth per patient was 1.35 ± 0.68 and the minimum was 1, the maximum was 6. Two hundred seventy two impacted teeth were found in maxilla, and 122 were in mandible. The incidence in maxilla was the order of canine, second premolar, central incisor, In mandible, the incidence as the order of second molar, second premolar, and first molar(p
=0.001). The frequency of occurrence of left and right impacted tooth was 189 on the left side and 205 on the right side, and the frequency was similar in the order of second premolar, second molar, and canine(p
=0.899). The unilateral impaction frequency was 236 80.5%. The eruption pattern of the opposit impacted tooth of the impacted tooth were the most frequent in type I 63.7%.Conclusion : This study investigated the incidence and occurrence of impacted teeth. As a result of eruption pattern of the opposit impacted tooth of the opposed teeth, 32.2% of the impacted tooth occurred in both right and left sides, and 2.3% in the case of the left and right teeth missing.
Keyword: Impacted teeth, Prevalence