论文部分内容阅读
以往,医生们认为(牙合)支凹底斜面与牙体长轴垂直,经光弹,有限元已研究证明;(牙合)支托凹底斜面与牙体长轴呈10°或20°.前磨牙呈10°,磨牙为20°,基牙受力时牙周膜受到拉伸,压缩的应力都集中在根尖区,起到保护基牙的作用.10°、20°(牙合)支托凹的底斜面有多深,在临床上牙科医生制备(牙合)支托凹时没有一个客观标准.那么,临床怎样制备才能达到要求呢?为此,我们设计了一种简单的(牙合)支托凹测量尺.经临床使用,制备支托凹的效果好.
In the past, doctors believe that the occlusal surface of the occlusal slope is perpendicular to the long axis of the tooth. Finite element studies have shown that the inclination of the occlusal surface of the occlusal support is 10 ° or 20 ° . The premolar is 10 ° and the molar is 20 °. The periodontal ligament is stretched when the abutment is stressed, and the compressive stress is concentrated in the apical area, which plays the role of protecting the abutment .10 °, 20 ° ) How deep is the bottom bevel of the support recess, there is not an objective criterion for the dentist's denture to be made clinically in the clinic? So, how can the preparation be achieved in clinical practice? To this end, we have designed a simple (Occlusal) support concave measuring ruler.After clinical use, preparation of support concave effect is good.