STUDY OF INVERTLY IMPACTED SUPERNUMERARY TEETH IN THE MIDPALATAL REGION USING COMPUTERIZED TOMOGRAPHY

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Journal of the Korean Academy of Pediatric Dentistry 2003;30(3):363-372.
Published online August 31, 2003.

STUDY OF INVERTLY IMPACTED SUPERNUMERARY TEETH IN THE MIDPALATAL REGION USING COMPUTERIZED TOMOGRAPHY

전산화 단층 방사선사진을 이용한 상악 정중부 역위 매복 과잉치에 관한 연구

최병재, 이용석, 김성오, 이제호

연세대학교 치과대학 소아치과학교실.구강과학연구소

Abstract

Supernumerary teeth are found frequently in the dental office causing many dental complications. They are one of the many dental abnormalities that may occur during tooth development. Inversely impacted supernumerary teeth in the midpalatal area are especially important clinically because they occur with high frequency and many complications. Though many previous clinical and radiographical studies exist, the sample numbers were small and the evaluation of shape, location, and effects to its surrounding tissue may not be accurate due to the solitary use of intraoral radiographs or panoramic radiographs. Among the patients who visited department of pediatric dentistry, yonsei dental hospital, from July, 1998 to June, 2002, those with inversely impacted supernumerary teeth took computerized tomography for a more accurate diagnosis. Their dental chart, panoramic radiograph and computerized tomography were evaluated for this study. The number, form, convexity, location, distance, and complications of inversely impacted supernumerary teeth in the midpalatal area were recorded. This study show that when the supernumerary teeth is tuberculated with a curved root and is in close proximity to the adjacent teeth, it causes complications such as eruption disturbance, rotation, displacement of adjacent teeth, and diastema. Such factors must be considered in making decisions for diagnosis and treatment.

Key Words: Supernumerary teeth, Impaction, Computerized tomography, Complication