Development of Damage Healing Type Smart Denture by Optimization of Materials Design

1.低的纤维-树脂界面滑动强度和高的界面粘结强度是实现高性能智能义齿精确形状恢复和高强度的关键。对纤维表面进行镀金处理是改善树脂中纤维色泽不美观的一种较好的方法，但其界面性能的变化尚不清楚。采用市售粘结底漆对原始状态的形状记忆合金纤维和镀金纤维进行粘结，并测试其界面粘结和滑动性能。结果表明，在原态光纤中，底涂层具有较高的粘结强度和较低的滑动强度，而在镀金光纤中，底涂层没有表现出这种特性。差异来自两种纤维之间的表面粗糙度的差异：在金涂覆之前进行表面研磨以改善纤维和金之间的结合。镀金层不能使粗糙度变平，粗糙表面的镀金纤维比原纤维具有更高的滑动强度.由于义齿基托具有三维形状，因此很难将纤维均匀地嵌入义齿基托中。如果纤维位置偏差对智能义齿性能的影响可以忽略，则均匀性也可以忽略。由于数据偏差较大，修复精度评价结果与无纤维修复无显著性差异。但其偏差较大，需要改进，以达到精确修复的目的，同时需要一种用于纤维植入基托的模板。义齿基托曲面与纤维曲面形状不匹配对修复精度影响不大。因此，直型纤维是合适的嵌入纤维。

1. Low fiber-resin interfacial sliding strength and high interfacial bonding strength are the key factors in high performance smart denture with accurate shape recovery and high strength. Gold coating to the fiber is a good solution to improve the low esthetic fiber color in the resin, but the interfacial property change is unknown. Commercial bonding primers were applied for as-received shape memory alloy fiber and gold-coated fiber, and the interfacial bonding and sliding property were tested. A primer with high bonding strength and low sliding strength was found for as-received fiber, but was not found for gold-coated fiber. The difference was derived from the difference in surface roughness between the two fibers : a surface grinding was performed before gold-coating to improve the bonding between the fiber and gold. The gold coating could not flatten the roughness, and rougher surface of gold-coated fiber showed higher sliding strength than as-received fiber.2. Since the denture base has three-dimensional shape, it is difficult to embed the fibers into the denture base homogeneously. If the fiber position deviation effect to the smart denture properties is negligible, the homogeneity is also negligible. Repair accuracy evaluation of specimens with and without fiber did not show significant difference due to the large deviation of data. However, the large deviation should be improved for the accurate repair, and a kind of template for fiber embedding into denture base was required. The effect of shape mismatch between the curved plane of denture base and curve of fiber on repair accuracy was not large. Therefore, straight shape fiber was appropriate for the embedded fiber.