한국인 정상교합자의 3차원 디지털 모형을 이용한 순,협측 치면 곡률
Labial and buccal surface contours of Korean normal occlusion in a three-dimensional digital model
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본 연구는 한국인의 치아형태에 적합한 브라켓 베이스를 만들기 위해 임상 치관의 순,협측 곡률을 3차원적으로 계측하여 치관의 곡률 자료를 얻고자 하였다. 정상적인 해부학적 형태를 가지는 구강모형 30쌍을 3차원 디지털 모델로 제작한 후, FA점을 기준으로 수평 기준면과 수직 기준면을 설정하였다. 이 기준면에 대한 치면의 곡선을 형성한 후, 곡률을 이차방정식의 계수로 표현하였다. 수평면과 수직면의 곡률과 FA점을 기준으로 근심과 원심, 치은측과 교합면측의 곡률을 측정한 결과, 상악견치와 상악 제2소구치 외에는 남녀간 치면 곡률의 유의한 차이가 없었다. 하악 측절치, 상악 견치, 상하악 제1, 2소구치와 제1대구치에서 근원심 또는 치은교합면측 치면 곡률의 유의한 차이가 관찰되었다 (p < 0.05). 본 연구에서 얻어진 순,협측 치면의 곡률 자료는 한국인의 치아 형태에 적합한 Straight Wire Appliance 개발의 기초 자료로 활용될 수 있다. (대치교정지 2008;38(2):95-103)
Abstract
Objectvie: This study was performed to investigate the labio/buccal clinical crown curvatures of Korean permanent teeth and to obtain the curve-ratio data in an attempt to fabricate bracket bases fit for each individual Korean permanent tooth. Methods: Three-dimensional digital models were made from 30 sets of dental casts with normal anatomic structures. According to the FA points, horizontal and vertical reference planes were established and lines were drawn on the tooth surfaces in reference to these planes. The curvature was expressed as the coefficient of a quadratic equation. Lines mesial, distal, gingival and occlusal to the horizontal, vertical reference planes and the FA point were drawn. Results: The curvature measured for each line revealed that there are no significant differences between male and female, except for maxillary canines and maxillary second bicuspids (p > 0.05). There were notable differences in the mesio-distal or gingivo-occlusal curvatures among the mandibular lateral incisors, maxillary canines, maxillary and mandibular first and second bicuspids and first molars (p < 0.05). Conclusions: The labial & buccal crown curvatures of teeth in Korean normal occlusion were measured on the mesial and distal, gingival and occlusal sides respectively in this study. Based on these data, a SWA can be developed to fit the individual features of Korean tooth crowns. (Korean J Orthod 2008;38(2):95-103)
참고문헌 (29)
- Graber TM, "Orthodontics: Current principles and techniques", pp.659~663 (1994), Mosbys
- Andrews LF, "The six keys to normal occlusion", Am J Orthod, 62, pp.296~309 (1972)
- Andrews LF, "The straight-wire appliance, origin, controversy, commentary", J Clin Orthod, 10, pp.99~114 (1976)
- Andrews LF, "The straight-wire appliance. Explained and compared", J Clin Orthod, 10, pp.174~195 (1976)
- Roth RH, "Five year clinical evaluation of the Andrews straight-wire appliance", J Clin Orthod, 10, pp.836~850 (1976)
- Roth RH, "The straight-wire appliance 17 years later", J Clin Orthod, 21, pp.632~642 (1987)
- Roth RH, "Functional occlusion for the Orthodontist", J Clin Orthod, 15, pp.174~179 (1981)
- McLaughlin RP, "Bracket placement with the preadjusted appliance", J Clin Orthod, 29, pp.302~311 (1995)
- Sperry TP, "Speidel TM. Tooth-size discrepancy in mandibular prognathism", Am J Orthod, 72, pp.183~190
- . Nie Q, "Comparison of intermaxillary tooth size discrepancies among different malocclusion groups", Am J Orthod Dentofacial Orthop, 116, pp.539~544 (1999)
- Kim DS, "A Study of Korean Norm about tooth size and ratio in Korean adults with normal occlusion", Korean J Orthod, 31, pp.505~515 (2001)
- Lee SJ, "Tooth size and arch parameters of normal occlusion in a large Korean sample", Korean J Orthod, 34, pp.473~480 (2004)
- Nojima K, "Sinclair PM. A comparative study of Caucasian and Japanese mandibular clinical arch forms", Angle Orthod, 71, pp.195~200 (2001)
- Kook YA, "Comparison of arch forms between Korean and North American white populations", Am J Orthod Dentofacial Orthop, 126, pp.680~686 (2004)
- Germane N, "Three biologic variables modifying faciolingual tooth angulation by straight-wire appliances", Am J Orthod Dentofacial Orthop, 96, pp.312~319 (1989)
- Vigorito JW, "Influence of the convexity of the upper central incisor on the torque expression of preadjusted brackets", J Clin Orthod, 40, pp.42~46 (2006)
- van Loenen M, "Anterior tooth morphology and its effect on torque", Eur J Orthod, 27, pp.258~262 (2005)
- Pak YC, "A morphologic study on straight wire bracket for Korean", Korean J Orthod, 21, pp.481~493 (1991)
- Yoon JJ, "A study of the crown angulation in normal occlusion", Korean J Orthod, 14, pp.123~165 (1986)
- Chang YI, "Effects A Study for the development of the Korean orthodontic bracket", Korean J Orthod, 30, pp.565~578 (2000)
- Kim SC, "A study on the configurations of Korean normal dental arches for preformed archwire", Korean J Orthod, 14, pp.93~101 (1984)
- Lee DJ, "Oriental Bracket", Korean J Orthod, 21, pp.495~500 (1991)
- Kim JS, "A statistical study of clinical crown inclination in Korean’s naturally occurring optimal occlusion", 1992, 22, pp.715~732 (1992)
- Lee WY, "A Morphometric study of teeth on the Korean normal occlusion", Korean J Orthod, 28, pp.601~609 (1998)
- Kuroda T, "Three-dimensional dental cast analyzing system using laser scanning", Am J Orthod Dentofacial Orthop, 110, pp.365~369 (1996)
- Quimby ML, "The accuracy and reliability of measurements made on computer-based digital models", Angle Orthod, 74, pp.298~303 (2004)
- Miethke RR, "Effect of variation in tooth morphology and bracket position on first and third order correction with preadjusted appliances", Am J Orthod Dentofacial Orthop, 116, pp.329~335 (1999)
- Ko SD, "A Study on the labial & buccal surface contour in Korean permanent teeth using three-dimensional laser scanning", Korean J Orthod, 32, pp.275~291 (2002)
- Kim HJ, "Dental morphology", pp.95~122 (2007), Hyunmoon