Darbar U R, Huggett R, Harrison A, Williams K
Department of Prosthetic Dentistry & Dental Care of the Elderly, University of Bristol Dental School.
Eur J Prosthodont Restor Dent. 1993 Mar;1(3):117-20.
Although acrylic resin teeth are the most popular artificial teeth used for denture construction, a high number fracture away at the tooth-denture base interface. Various causes have been documented for this failure; however, it is logical that eventual fracture occurs due to localised tensile stresses at this interface. Examination of these stresses using the finite element method showed that on load application to the upper incisors, the maximum tensile stresses were concentrated within the body of the tooth and not at the tooth-denture base interface. Stresses encountered at the interface were relatively low and introduction of a crack made no significant difference to their magnitude.
尽管丙烯酸树脂牙是义齿制作中最常用的人造牙，但大量的丙烯酸树脂牙在牙-义齿基托界面处折断。已记录了导致这种失败的各种原因；然而，从逻辑上讲，最终的折断是由于该界面处的局部拉应力所致。使用有限元方法对这些应力进行检查表明，在上颌切牙加载时，最大拉应力集中在牙体内部，而不是在牙-义齿基托界面处。在界面处遇到的应力相对较低，引入裂纹对其大小没有显著影响。
