嵌体冠修复磨牙残冠的临床研究

Clinical Study of Restoration of Partial Molar Using Inlay Crown

目的探讨和研究固位力欠佳的磨牙残冠的临床修复方法及效果。方法用金刚砂车针对患牙作常规的牙体预备,牙冠外形按全冠进行牙体预备,髓室部分制作箱状固位形,取印模、灌制模型,完成铸造嵌体冠,临床试戴、调改、黏结。结果经过2～5年随访观察,122颗患牙经过修复治疗后获得满意效果,个别患牙出现修复体食物嵌塞、牙龈炎症、颈缘密合不良。结论利用髓室固位的铸造金属嵌体冠对于治疗磨牙残冠是一种简单易行、效果良好的修复方法,严格的选择适应证以及准确的牙体预备和精确的加工制作是修复成功的前提和关键。

Objective Lack of stabilization is always a problem for partial crown restoration. This study was to find the optimal clinical techniques to restore partial crown at molar areas. Methods Using diamond bur, all partial crowns were prepared according to traditional technique. The shapes of crowns were prepared as same as full crowns. The pulp wails were prepared as a box stabilization shape. After that, the following procedures would be preformed： impression, make a model, fabricate an inlay, clinical tried, modification, and cement. Results Following up 2 -5 years, 122 teeth were archived satisfactory results. Only few cases had problems such as food impaction, gingival inflammation, and gingival margin open. Conclusion For partial molar restoration, casting inlay with pulp wall stabilization is easy and simple technique. Clinical restoration result was satisfactory. The keys for success are carefully selection of indications, preparation tooth and fabrication of inlay with accuracy.