CAJ | 학술논문

目的：研究解剖(牙合)型全口义齿人工牙牙尖斜度连续变化特征，分析其对全口义齿平衡(牙合)建立的影响。方法：使用光学多自由度扫描仪扫描得到解剖(牙合)型全口义齿人工牙三维数据，经逆向工程软件 Surfacer 10．5三维建模，测量牙尖斜面牙尖底至牙尖顶连线与牙尖底平面的夹角，代表牙尖工作斜面斜度，并将此连线投影至人工牙(牙合)面得相应曲线，测量曲线斜率的连续变化值，分析牙尖斜面斜度连续变化特征。结果：测得人工牙后牙牙尖斜面斜率及其投影曲线斜率连续变化值。上后牙颊尖远中斜面斜率13．7°～25．6°，下后牙颊尖近中斜面斜率11．3°～37．7°，不同牙齿间差异较大，(牙合)面近中央窝附近表现为斜率迅速升高的突面。结论：解剖(牙合)型全口义齿人工牙牙尖工作斜面斜度不同牙齿间的较大差异及其凸面的形态不利于建立稳定的正中止与非正中(牙合)咀嚼运动的顺畅。
목적：연구해부(아합)형전구의치인공아아첨사도련속변화특정，분석기대전구의치평형(아합)건립적영향。방법：사용광학다자유도소묘의소묘득도해부(아합)형전구의치인공아삼유수거，경역향공정연건 Surfacer 10．5삼유건모，측량아첨사면아첨저지아첨정련선여아첨저평면적협각，대표아첨공작사면사도，병장차련선투영지인공아(아합)면득상응곡선，측량곡선사솔적련속변화치，분석아첨사면사도련속변화특정。결과：측득인공아후아아첨사면사솔급기투영곡선사솔련속변화치。상후아협첨원중사면사솔13．7°～25．6°，하후아협첨근중사면사솔11．3°～37．7°，불동아치간차이교대，(아합)면근중앙와부근표현위사솔신속승고적돌면。결론：해부(아합)형전구의치인공아아첨공작사면사도불동아치간적교대차이급기철면적형태불리우건립은정적정중지여비정중(아합)저작운동적순창。
Objective:To survey the continuous change features of cusp angle in anatomic artificial teeth,and to investigate their effects on occlusal balance.Methods:28 artificial teeth of a complete denture were measured by optical three-dimensional(3D)scan-ner and the corresponding digital models were constructed using the reverse engineering software Surfacer 1 0.5.The working side cusp slopes of lateroprotrusive movement including the maxillary buccal cusp distal slopes and the mandibular buccal cusp mesial slopes were studied.The straight lines from bottom to top of cusp were constructed and the corresponding projected curves in occlusal surface were generated.The angulation values of straight line and the continuous change values of projected curve were calculated.Results:The angulation values of artificial teeth cusp inclination including straight line and corresponding projected curve were obtained.The maxillary working cusp inclination varied from 1 3.7°to 25.6°,and the mandibular working cusp inclination varied from 1 1 .3°to 37.7°.Conclusion:The relatively large differences of the cusp inclination among traditional anatomic artificial teeth and the convex form of the cusp are disadvantage factors to set up stable centric stop and unhindered chew course.