CAJ | 학술논문

目的　确定义齿软衬材料的硬度与其分散咬合压力能力的关系，寻找义齿软衬材料最佳硬度范围，为临床应用提供指导. 方法　采用实验光弹应力分析法，以表面有模拟小骨突及粘膜的牙槽骨光弹模型为应力分析对象，测试了在衬有不同硬度软衬垫的义齿模型压迫下，光弹模型骨突处产生应力的大小. 结果　模拟咬合压力在300～500 N范围内，使用硬度为邵氏(A)50的软衬垫，模拟骨突下应力条纹值明显小于使用其他4种硬度(Shore A 28，35，41，57)软衬垫所得条纹值. 结论　义齿软衬材料的硬度与其分散压力能力有密切的关系，硬度为邵氏(A)50的软衬材料缓冲、分散压力的能力明显优于其他硬度的材料.
목적　학정의치연츤재료적경도여기분산교합압력능력적관계，심조의치연츤재료최가경도범위，위림상응용제공지도. 방법　채용실험광탄응력분석법，이표면유모의소골돌급점막적아조골광탄모형위응력분석대상，측시료재츤유불동경도연츤점적의치모형압박하，광탄모형골돌처산생응력적대소. 결과　모의교합압력재300～500 N범위내，사용경도위소씨(A)50적연츤점， 모의골돌하응력조문치명현소우사용기타4충경도(Shore A 28，35，41，57)연츤점소득조문치. 결론　의치연츤재료적경도여기분산압력능력유밀절적관계，경도위소씨(A)50적연츤재료완충、분산압력적능력명현우우기타경도적재료.
AIM　To determine the influence of the hardness of soft lining materials on the pressure distribution in the mandibula mould. METHODS　A denture mould underlined with resilient liner was loaded on a mandibula mould on which there is a simulated protuberance and covered by rubber mucosa. There were five resilient liners with Shore A hardness of 28, 35，41，50 and 57 respectively. The pressure distribution was investigated by photoelastic stress analysis. RESULTS　When the Shore A hardness of resilient liner was 50 and the loaded pressure on the denture mould was within 300～500 N, the count of interference fringe occuring below the simulated protuberance was the lowest. CONCLUSION　The effect of the hardness of soft lining materials on its ability of pressure distribution is significant. The ability of pressure distribution of soft lining materials of Shore A hardness 50 is superior to the materials of other hardness.