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目的考察热压铸瓷面瓷贴面在后牙缺损的短期临床效果。方法对28例患者的35颗后牙牙体缺损,包括18颗重度磨耗活髓后牙和17颗根管治疗术后面牙体缺损的后牙,采用热压铸瓷面瓷贴面修复。根据改良美国公共卫生署修复体评价标准,分别于修复后完成当日和1、6、12、24、36个月对面瓷贴面进行随访复查,结果采用χ~2检验分析。结果后牙热压铸瓷面瓷贴面的修复体外形、边缘适合性、牙龈状况、继发龋和邻面接触点在观察期间显示良好。有2例下颌前磨牙面瓷贴面在粘接2年后出现脱落,χ~2检验分析修复体固位的A级成功率在6个时间节点间差异无统计学意义。36个月内各项评估A级成功率在90%以上。结论热压铸瓷面瓷贴面用于重度磨耗活髓后牙与根管治疗术后面牙体缺损后牙的短期修复效果良好,为后牙牙体缺损微创修复提供了一种选择方式,但其远期效果仍有待进一步的观察。
Objective To investigate the short-term clinical effect of hot-pressed porcelain veneer porcelain veneer on posterior teeth defect. Methods Twenty-five posterior teeth of 28 patients with posterior teeth defect, including 18 heavily worn live pulp and posterior teeth and 17 root canal treated posterior teeth, were repaired by hot-pressed porcelain and porcelain veneer. According to the revised evaluation standard of the US Department of Public Health’s prosthesis, follow-up and follow-up examination of the porcelain veneer was performed on the completion date of the restoration and 1,6,12,24,36 months respectively. The results were analyzed by χ ~ 2 test. Results The appearance, marginal fit, gingival condition, secondary caries, and proximal contact points of the porcelain-fused-to-ceramic facets of the posterior teeth were shown to be good during the observation period. Two cases of mandibular premolar face porcelain veneer in 2 years after bonding off, χ ~ 2 test analysis of prosthesis retention A-level success rate in the six time points between the no significant difference. Within 36 months, the success rate of each assessment A level is over 90%. Conclusion The application of hot-pressed porcelain enamel veneer for severe abrasion of vital pulp posterior teeth and root canal for short-term restoration of facial posterior tooth defects is a good choice for minimally invasive repair of posterior teeth defects , But its long-term effect remains to be further observed.