Farah J W, Dennison J B, Powers J M
J Am Dent Assoc. 1977 Jun;94(6):1151-4. doi: 10.14219/jada.archive.1977.0378.
Eight intracoronal and extracoronal designs for gold restorations with different tapers to the lateral walls were investigated to determine the most efficient design in distributing occlusal stresses. It was found that the occulusal wall of an inlay cavity with a 7 degree taper and no bevel resulted in a better stress distribution than a cavity preparation with a greater taper or a long bevel. It was shown further that a wide inlay preparation resulted in less stress if the cusps were protected by gold.
研究了八种具有不同侧壁锥度的金修复体的冠内和冠外设计，以确定在分散咬合应力方面最有效的设计。结果发现，锥度为7度且无斜面的嵌体洞型的咬合壁，比锥度更大或斜面更长的洞型预备能产生更好的应力分布。进一步表明，如果牙尖用金保护，宽的嵌体预备产生的应力较小。
