Peutzfeldt A, Asmussen E
Royal Dental College, Copenhagen.
Dent Mater. 1991 Jan;7(1):11-4. doi: 10.1016/0109-5641(91)90018-t.
The retention of composite inlays depends on acid-etching of marginal enamel of the preparation. In many cases, only little marginal enamel is available, making loss of retention a liability. The present study evaluated the retention of three brands of composite inlays under various conditions. Inlays were fabricated and cemented in standardized enamel/dentin cavities prepared in extracted human teeth. The force necessary to extract a cemented inlay was used to express the retention of the inlay. The effects of thermocycling and choice of dentin-bonding agent on inlay retention were also determined. Inlays made of Estilux posterior C VS were more retentive than inlays of either Brilliant or SR-Isosit. The latter two products were found to provide similar retentive strengths. The retention of Estilux posterior C VS and SR-Isosit inlays declined when samples were thermocycled. Treatment with Gluma increased retention of inlays, resulting in retentive strengths of the same magnitude for all three inlay systems. The choice of dentin-bonding agent was found to affect composite inlay retention to a greater extent than the choice of either composite brand, mode of inlay curing, or effect of thermocycling.
复合树脂嵌体的固位取决于对预备体边缘釉质的酸蚀。在许多情况下，可供酸蚀的边缘釉质很少，导致固位力丧失成为一个问题。本研究评估了三种品牌的复合树脂嵌体在不同条件下的固位情况。嵌体在拔除的人牙制备的标准化釉质/牙本质窝洞中制作并黏结。使用拔除黏结嵌体所需的力来表示嵌体的固位力。还测定了热循环和牙本质黏结剂的选择对嵌体固位的影响。Estilux posterior C VS制成的嵌体比Brilliant或SR-Isosit的嵌体固位力更强。发现后两种产品提供相似的固位强度。当样本进行热循环时，Estilux posterior C VS和SR-Isosit嵌体的固位力下降。使用Gluma处理可增加嵌体的固位力，使所有三种嵌体系统的固位强度达到相同水平。发现牙本质黏结剂的选择比复合树脂品牌的选择、嵌体固化方式或热循环的影响在更大程度上影响复合树脂嵌体的固位。
