摘要
用电阻应变测试技术测新鲜成年人牙釉质的弹性模量，共测了不同人的12颗牙齿制作的12个牙釉质试件，其中切牙、尖牙、双尖牙和磨牙各3个，测得牙釉质沿牙切龈或He龈方向的拉伸弹性模量值在2.08-10^4-2.68×10^4MPa之间，均值为2.3717×10^4MPa，本文同时简略地介绍了电阻应变测试技术的基本原理。
This study is to measure the modulus of elasticity of fresh enamal from human adultwith resistance strain measuring technique.A tensile force is loading axially on theenamal test piece,according to the amount of force represented on the BLR-3 type forcetransducer which used,and a BF120-1AA type resistance strain gauge with gauge length1mm is used as a sensor,according to the amount of strain which manifested on theYJB-1A type resistance strain meter,the modulus of elasticity are determined.Twelve of enamal test pieces in cuboid were collected from twelve teeth of differ-ent persons,including 3 incisors,3 cuspids,3 bicuspids and 3 molars.Under humid env-ironment,each test piece was ground in to 6.5～8mm length,3～3.66mm width and0.4～0.7mm thickness.All of the test pieces were selected along inciso-gingival or occluso-gingival direction.The determined modulus of elasticity which were the tensile modulus of elasticity ofinciso-gingival(?)or oceluso-gingival direction.The range of modulus of elasticity is 2.08×10~4～2.68×10~4 MPa,and the average is 2.3717×10~4 MPa.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1991年第3期207-209,共3页
West China Journal of Stomatology
基金
四川省科委基金
