Kopel H M, Batterman S C
ASDC J Dent Child. 1976 Sep-Oct;43(5):333-9.
The following conclusions may be made within the limitations of this investigation. - A composite resin processed directly against a roughened stainless steel dye, similar in shape to a primary anterior tooth, which has been shaped to receive a polycarbonate crown, shows the highest retentive force measured in pounds per square inch (psi). - A polmethacrylate resin, when used as a cement, also shows high values, probably due to its ability to unite chemically with polycarbonated acrylic and to its low film thickness. - Composite resins of low viscosity, low film thickness, and high compressive and tensile strengths proved also to provide good retentive values and would contribute insolubility to a greater degree than the unfilled resin. - Polycarboxylate, zinc phosphate, and reinforced zinc oxide-eugenol cements are not to be recommended as agents for cementing polycarbonate crowns. - It can be recommended on the basis of retention only, composite crowns should be fabricated directly onto the tooth preparations of carious primary anterior teeth.
在本研究的局限性范围内，可得出以下结论：- 一种直接在粗糙的不锈钢模具上加工的复合树脂，该模具形状类似于已成型以容纳聚碳酸酯冠的前乳牙，其以每平方英寸磅数（psi）测量的保持力最高。- 聚甲基丙烯酸酯树脂用作粘结剂时，也显示出高数值，这可能归因于其与聚碳酸酯丙烯酸酯化学结合的能力及其低膜厚度。- 低粘度、低膜厚度以及高抗压强度和抗拉强度的复合树脂也被证明能提供良好的固位值，并且比未填充树脂在更大程度上有助于不溶性。- 聚羧酸锌、磷酸锌和增强型氧化锌丁香酚水门汀不推荐用作粘结聚碳酸酯冠的材料。- 仅基于固位力考虑，可推荐在龋坏的前乳牙牙体预备上直接制作复合树脂冠。
