首页> 外文期刊>The Journal of Prosthetic Dentistry >Mathematical derivation of the minimally acceptable all-porcelain margin angle.
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Mathematical derivation of the minimally acceptable all-porcelain margin angle.

机译:最小可接受的全瓷边角的数学推导。

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摘要

There is limited research defining the minimally acceptable porcelain margin angle required to withstand the stresses incurred during seating a restoration. A mathematical model was derived to calculate this critical porcelain margin angle. The factors involved in margin fracture were determined to be the tensile strength of the porcelain, the axial reduction, the diameter of the tooth, the porcelain margin angle, and the seating force. As the seating force increases, the porcelain margin angle required to prevent failure also increases. Increasing either the axial reduction or the diameter of the tooth allowed the minimum porcelain margin angle to decrease.
机译:有限的研究定义了承受修复体安置过程中产生的应力所需的最小可接受的瓷质边角。推导了数学模型来计算该临界瓷质边缘角。确定与边缘断裂有关的因素是瓷器的抗拉强度,轴向减小,齿的直径,瓷器边缘角和就座力。随着就座力的增加,防止失效所需的瓷质余角也增加了。增大轴向减小量或增大齿的直径可使最小瓷余角减小。

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