Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
권호 표지

A CLINICAL STUDY OF CONGENITAL MISSING TEETH

선천성 결손치에 관한 임상적 연구

  • Jeong, Hae-Kyoung (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Yang, Yeon-Mi (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Jae-Gon (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Baik, Byeong-Ju (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Jung, Jin-Woo (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Ha-Na (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Mi-Ah (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University)
  • 정해경 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 백병주 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 정진우 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 김하나 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소) ;
  • 김미아 (전북대학교 치의학 전문대학원 소아청소년치과학교실 및 구강생체과학연구소)
  • Published : 2009.05.30
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Abstract

The congenital missing of teeth is common, which takes place since the proliferation and differentiation are not allowed in that tooth bud fail to start development. The purpose of this study is to research incidence rate, number, and missing part of congenital missing teeth, and to study whether a person who has missing teeth has other abnormality of teeth or not. For this study, 1,520 subjects(aged 2.9$\sim$17) who had visited pediatric dentist department of Chonbuk national university dental hospital within 2 years were examined with an panoramic radiograph; exempting third molar missing state. The obtained results are as follows. 1. 8.88% among total subjects show missing teeth; male 9.05%, female 8.64% 2. The most frequently missing permanent teeth were the mandibular second premolars(22.3%). The most frequently missing primary teeth are mandibular lateral incisors(50%). 3. 43.3% patients have one permanent missing tooth, 34.3% have two, and 10.4% have more than six, respectively. In primary teeth, 86.7% patients have one missing tooth, and 13.3% have two missing teeth. 4. 18 patients(13.3%) have missing teeth as well as hyperdontia, while some patients have microdont, ectopic eruption, and fusion teeth.

치아의 선천성 결손은 치배의 발육이 시작되지 못하여 치아의 증식, 분화가 일어나지 못함으로서 발생하는 흔한 치아의 발육 이상이다. 이 연구의 목적은 선천성 결손치의 발생률, 결손치의 수, 발생부위와 결손치 환자에게서 나타난 다른 치아이상의 발생여부를 조사하는 것이다. 본 연구는 2006년 7월부터 2008년 6월까지 전북대학교 소아치과에 내원하여 파노라마를 촬영한 1,520명의 환자(2.9$\sim$17세)를 대상으로 제 3 대구치를 제외한 선천성 결손치의 분포를 조사하여 다음과 같은 결과를 얻었다. 1. 전체 1,520명 중 총 8.88%에서 결손치가 관찰되었으며, 남자가 9.05%,여자가 8.64%에서 결손치가 관찰되었다. 2.총 350개의 영구 결손치 중 하악 제 2소구치가 22.3%로 가장 발생률이 높았고, 하악 측절치, 상악 제 2소구치 하악 중절치, 상악 측절치 순이었다. 또한 총 18개의 유치 결손치 중 하악 유측절치가 가장 높은 발생률(50%)을 보였다. 3. 1개의 영구치 결손치를 가지는 환자는 43.3%, 2개는 34.3% 3개는 6.7%, 4개는 1.5%, 5개는 3.7% 6개 이상은 10.4%이었다. 또한 유치 결손치의 수는 1개는 86.7%, 2개는 13.3%이었다. 4. 결손치가 있는 환자 중 과잉치를 가지는 환자는 18명(13.3%)이 있었으며, 왜소치, 이소맹출, 융합치 등의 치아이상을 지닌 환자도 관찰되었다.

Keywords

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