Haller B, Thull R, Klaiber B, Schmitz A
Poliklinik für Zahnerhaltung und Parodontologie der Universität Würzburg.
Dtsch Zahnarztl Z. 1990 Oct;45(10):660-3.
The flexural rigidity of the buccal cusps of upper premolars was determined under a vertical load of 100 N by use of displacement transducers. The stiffness of the cusps was higher when the cavities were restored with cast gold onlays or with composite or ceramic inlays luted with composite resin. In most cases a decrease in cusp stiffness was observed after thermocycling of the teeth restored with composite or ceramic inlays. With amalgam restorations or cast gold inlays, the flexural rigidity of the cusps was not higher than that of the unrestored cavities.
在上颌前磨牙颊尖垂直加载100N的情况下，使用位移传感器测定其抗弯刚度。当用铸造金嵌体、复合树脂粘结的复合树脂或陶瓷嵌体修复窝洞时，牙尖的刚度更高。在大多数情况下，用复合树脂或陶瓷嵌体修复的牙齿经热循环后，牙尖刚度会降低。对于汞合金修复体或铸造金嵌体，牙尖的抗弯刚度不高于未修复窝洞的抗弯刚度。
