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目的评价插销式铸造分体桩核在磨牙残根金属烤瓷冠修复中的作用。方法选择38例患者51颗磨牙残根,行完善根管治疗后,用寒天琼脂、藻酸盐联合制取根管印模间接法制作插销式分体铸造桩核,并进行金属烤瓷冠修复。结果经3年临床观察,成功48颗(96%),失败2颗(4%)1,颗为根折裂,1颗为牙周袋形成。结论适应证的选择及牙体预备和根管印模技术是插销式分体铸造桩核烤瓷冠治疗成功的关键。
Objective To evaluate the role of pin-type cast split post core in the restoration of residual porcelain fused to metal crowns. Methods Thirty-five molar residual roots were selected from 38 patients. After perfecting the root canal treatment, the pin-split split cast post-core was produced by cold-days agar and alginate combined root canal stamping. . Results After 3 years of clinical observation, 48 (96%) were successful, 2 (4%) failed, 1 root fracture and 1 periodontal pocket. Conclusion The choice of indications and dental preparation and root canal stamping technology is the key to successful success of the pin-split cast porcelain fused-to-metal crown.