The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A STUDY ON MORPHOLOGIC CHARACTERISTICS OF LINGUAL SURFACE OF CROWN AND LINGUAL ARCHFORM OF KOREAN ADULT WITH NORMAL OCCLUSION

정상교합자 설측치관형태 및 설측치열궁형태에 관한 연구

  • Kim, Young-Lim (Department of Orthodontics, School of Dentistry, Kyungpook National university) ;
  • ;
  • Sung, Jae-Hyun (Department of Orthodontics, School of Dentistry, Kyungpook National university)
  • 김영림 (경북대학교 치과대학 교정학교실) ;
  • 경희문 (경북대학교 치과대학 교정학교실) ;
  • 성재현 (경북대학교 치과대학 교정학교실)
  • Published : 1995.04.01
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Abstract

The purpose of this study was to obtain the lingual morphology(angulation, inclination, horizontal and vertical contour) and lingual arch form of Korean adult with normal occlusion in order to provide the basic datas for lingual brackets and ideal lingual archwire. Dental models of thirty person with normal occlusion(Male : 16, Female :14) were selected for this study. Crown angulation, inclination. horizontal and vertical contour of lingual surfaces from Lt. 1st molar to Rt 1st molar of both upper and lower arch were measured. Lingual arcform was studied from copied papers of dental models attached Fujita lingual bracket. The results of this study were summarized as follows: 1. The average angulation and inclination of lingual surfaces of all tooth types for Korean adults with normal occlusion were obtained. 2. The average horizontal and vertical contour of lingual surfaces of all tooth types were obtained. 3. There were similar figures in horizontal and vertical contour of lingual surfaces between upper and lower molars, upper and lower premolars, upper and lower canines, upper central and lateral incisors and lower central and lateeral incisors respectively. It was possible that the use of those contour of bracket bases in common. 4. The average of lingual archform was provided, which was arch-shaped from canine to canine, linear along the premolars and molars with small offset bend between them, and where canines and premolars met, it was bent in a crank- shape. 3. There was no difference between lingual archform of male and that of female, although lingual archform of female was smaller than that of male in lower arch.

한국인에게 적합한 설측교정장치와 이상적인 설측 치열궁 아치와이어 제작의 기초자료를 얻기위하여 정상교합자 경석고 모형 30개를 재료로 하여 설측치관의 형태와, 후지타 설측 브라켓을 위치시킨 모형에서 설측치열궁 형태를 조사하여 다음과 같은 결과를 얻었다. 각 치아에 대한 치관의 근원심 경사도와 설면의 순설측 치관 경사도의 평균치를 얻었다. 각 치아에 대한 브라??? 위치에서 설면의 수평 및 수직적 형태를 얻은 결과 대구치, 소구치, 견치는 상하악이 비슷한 모양을 보였으며, 강하악의 중절치와 측절치도 비슷한 모양을 보여 각각 브라켓 기저부를 공유할 수 있을 것으로 나타났다. 브라켈 부착위치에서의 평균 설측치열궁 형태를 얻은 결과, 그 형태는 전치부는 반원형이며 견치와 소구치 사이에 강한 오프??? 밴드가 있는 버섯 형태로서 소구치간 및 제2소구치와 대구치간에도 오프??? 밴드가 필요한 것으로 나타났다. 남녀간의 평균 설측치열궁 형태는 상악은 거의 일치하였고 하악은 여자가 남자보다 다소 작은 형태를 나타내었다.

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