기준면이 다른 반조절성 교합기의 전방시상과로각과 교합평면경사각에 대한 연구
A study of sagittal condylar inclination and occlusal plane inclination of two semiadjustablearticulators with different reference plane
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초록
연구목적: 기존의 교합기들은 서양인의 악안면구조와 하악운동 평균치에 맞추어 제작되어 있다. 이에 현재 임상교육에 널리 사용하 고 있는 반조절성 교합기 (KaVo PROTAR, Hanau Modular)를 한국인에게 적용함에 있어서 적절한 기준을 구하고자 이번 연구를 시행하 였다. 연구방법: 24~41세 한국인 성인 59명 (남41명, 여18명)을 선정하였다. 피검자 일인당 두쌍의 상하악 모형을 제작, KaVo PROTARevo 7 과 Hanau Modular 반조절성교합기에 facebow transfer하여 교합기에 부착 후 전방시상과로각, 교합평면경사도, 교합기 상의 하악의 위치 를 계측하였다. 연구성적: 1. 평균 전방시상과로각은 KaVo PROTAR 반조절성 교합기상에서 33.75(표준편차 12.46)였고, Hanau Modular 반조절성 교합기상에서 40.72(표준편차 12.09)였다. 2. 평균 교합평면경사각은 KaVo PROTAR 반조절성 교합기상에서 -2.76(표준편차 3.63)였고, Hanau Modular 반조절성 교합기상에서 11.87(표준편차 3.63)였다. 3. 하악치열의 중심은 교합기의 중심에서 평균 5~7 mm 범위내에 있었으며 KaVo PROTAR 반조절성 교합기에서는 전치부와 구치부 모 두 교합기의 상하적 위치관계에서 중앙에 위치하였고, Hanau Modular 반조절성 교합기에서는 교합기의 중앙높이에서 전치부는 하 방 5 mm, 구치부는 상방 3 mm에 위치하였다.
Abstract
Statement of problem & Purpose: Articulators are very important for education and overall clinical situation in the field of prosthodontics, however preexisting articulators are designed and built based on maxillofacial structures and mean values of mandibular movement of Western people. Purpose of this research is to find out a adequate basis for applicating these articulators, presently used for clinical education, for Korean. Material and methods: 59 Korean adults (41 males, 18 females), aged between 24 to 41, where selected for this study. Two pairs of both maxillary and mandibular models were made for each examinee. These models where attached to both KaVo PROTARevo 7 and Hanau Modular semiadjustable articulators by using facebow transfer, than sagittal condylar inclination, occlusal plane inclination and position of mandibular on the articulator where measured. Result and conclusion: 1. Mean sagittal condylar inclination for KaVo PROTAR semiadjustable articulator was 33.75°(standard deviation 12.46°) meanwhile Hanau Modular semiadjustable articulator showed 40.72°(standard deviation 12.09°) for mean sagittal condylar inclination. 2. Mean occlusal plane inclination for KaVo PROTAR semiadjustable articulator was -2.76°(standard deviation 3.63°) meanwhile Hanau Modular semiadjustable articulator showed 11.87° (standard deviation 3.63°) for mean occlusal plane inclination. 3. On the average center of the mandibular dentition were in the range of 5 to 7 mm of the central position of the articulator. Both anterior and posterior dentition were positioned at the center of the articulator vernacularly for KaVo PROTAR semiadjustable articulators, meantime for Hanau Modular semiadjustable articulator, anterior dentition was positioned 5 mm downwards and 3mm upwards for posterior dentition from vertically central position of the articulator.
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