玻璃纤维增强树脂桩核在残冠残根修复中的临床应用

目的：分析评价玻璃纤维增强树脂桩核修复残冠残根的临床效果。方法：门诊残冠、残根患者64例，随机分A、B两组，A组32例46颗患牙，采用玻璃纤维增强桩核。B组32例52颗患牙，采用金属铸造桩核。均用烤瓷冠完成修复，于治疗完成后半年、1年和2年时预约复诊，对照观察A、B两组的临床修复效果及预后。结果：2年内A组有1例2颗患牙失访，31例44颗患牙修复体良好，无松动，无折裂，烤瓷冠边缘密合；B组有1例1颗患牙失访，2例2颗患牙根折，1例1颗患牙桩核松动脱落，3例8颗患牙龈缘出现暗灰色色素沉着，其余25例40颗患牙修复良好。结论：利用玻璃纤维增强树脂桩核保存修复残根残冠，取得了满意的修复效果，玻璃纤维增强树脂桩核具有生物相容性好、强度高、抗疲劳性、抗腐蚀性、美观、操作简便、适应证广等优点，是进行残根残冠保存修复的理想选择。

Clinical application of glassfiber-reinforced composite post and core in the restoration of residual crown and residual root

Objective: To evaluate the effect of restoration of residual crown and residual root with glassfiber-reinforced composite post and core. Methods: 64 cases, 98 teeth were selected. The patients were divided into two groups randomly.32 cases in group A were restored with glassfiber-reinforced posts and cores, and 32 cases in group B were restored with cast metal posts and cores. All the teeth were restored with PFM crown finally. All patients were revisited half a year, one year, two years after treatment. Results: During the following up period one patient in group A with two teeth and one patient in group B with one tooth defaulted follow up. The restorations of 31 cases (46 teeth) functioned well, with good marginal fit in group A. No loose and fracture was found. 2 teeth of 2 cases in group B were found root fracture. 1 post and core was loose and 3 cases were found gingival grey line around 8 teeth. Conclusions: Clinical effect of glassfiber- reinforced composite post and core was satisfying. Glassfiber-reinforced composite post and core has many advantages, such as good biocompatibility, high-strength, fatigue-resistance, erosion-resistance, natural aesthetic, easy to be used and wide application. So it is a good choice in the restoration of residual crown and residual root.