CAJ | 학술논문

目的：研究正常肌接触位及下颌后退接触位咬合接触的基本规律。方法：采集35名正常肌接触位及下颌后退接触位的硅橡胶记录，进行计算机图像分析。结果：肌接触位33人前牙无接触，单颌后牙区接触数为16．6±7．2，所有受试者均为双侧接触。肌接触位咬合接触均在牙尖交错位重复出现。接触频率超过50％的部位位于上颌磨牙颊尖和舌尖的远中斜面，下颌磨牙颊尖和舌尖的近中斜面。下颌后退接触位所有受试者均为双侧接触，有接触的牙齿数目单颌单侧2．7士0．8，接触点数目单颌8．0±2．3，前牙无接触，接触数目及比率从第二磨牙到第一前磨牙依次减少。接触频率超过40％以上的斜面上颌为前磨牙舌尖、磨牙远中舌尖及第二磨牙近舌尖的近中颊斜面，下颌为前磨牙及第二磨牙颊尖的远中舌斜面。结论：以硅橡胶为记录材料准确采集到肌接触位及下颌后退接触位记录，经计算机图像分析，得出其咬合接触的基本特征。
목적：연구정상기접촉위급하합후퇴접촉위교합접촉적기본규률。방법：채집35명정상기접촉위급하합후퇴접촉위적규상효기록，진행계산궤도상분석。결과：기접촉위33인전아무접촉，단합후아구접촉수위16．6±7．2，소유수시자균위쌍측접촉。기접촉위교합접촉균재아첨교착위중복출현。접촉빈솔초과50％적부위위우상합마아협첨화설첨적원중사면，하합마아협첨화설첨적근중사면。하합후퇴접촉위소유수시자균위쌍측접촉，유접촉적아치수목단합단측2．7사0．8，접촉점수목단합8．0±2．3，전아무접촉，접촉수목급비솔종제이마아도제일전마아의차감소。접촉빈솔초과40％이상적사면상합위전마아설첨、마아원중설첨급제이마아근설첨적근중협사면，하합위전마아급제이마아협첨적원중설사면。결론：이규상효위기록재료준학채집도기접촉위급하합후퇴접촉위기록，경계산궤도상분석，득출기교합접촉적기본특정。
Objective :To assess occlusal contacts of normal occlusion in the muscular contact position and the retruded contact position. Methods:Occlusal contacts in the muscular contact position and the retruded contact position of 35 subjects with normal dentition were recorded with silicone and were analysed with computer-aided video analysis system. Results: In the muscular contact position ,there was no contact in the anterior segments in 33 individuls . The average number of occlusal contacts in the posterior segement was 16.6± 7.2 (on one jaw). All subjects possessed contacts on both sides. The occlusal contacts in the muscular contact position reoccurred in the intercuspal position. 50％ or more of the contacts were on the distal inclines of the buccal and lingual cusps of the molars on the upper jaws or on the mesial inclines of the buccal and lingual cusps of the molars on the lower jaws. In the retruded contact position ,there were contacts on both sides in all subjects. The nunber of teeth with contact was 2.7±0.8 (each side of one jaw) and the number of contacts was 8.0±2.3(on one jaw). The number and prevalence of the contacts descended from the second mo- lars to the first premolars sequentially, and disappeared in the anterior segments. The inclines with 40％ or more contacts were the mesial-buccal inclined surfaces of the lingual cusps of the premolars and the distal-lin gual cusps of the molars and the mesial-lingual cusps of the second molars on the upper jaws,the distal-lingual incline of the buccal cusps of the premolars and the second molars on the lower jaws. Conclusion :The characteristic of occlusal contacts recorded with silicone in the muscular contact position and the retruded contact position may be represented with computer-aided video analysis system.