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目的探讨烤瓷贴面在前牙修复时发生折裂、脱落、微渗漏、粘接等技术问题的解决方法。方法确定适应证及禁忌证。预备牙体,在牙唇面磨出2条纵行固位沟,在耐火包理科模型上分层涂瓷。贴面的内表面经5%氢氟酸处理及徐偶联剂后.取相应包号的光固化树脂粘接。结果118颗瓷贴面修复的前牙,经3个月至1年的观察,无脱落破损、无染色、变色及着色,无龈炎发生,效果满意。结论在牙唇面制备2条纵行固位沟、唇面边缘磨出浅凹粮形的牙体预备方法,可增强粘接剂与牙体组织之间的粘接力。贴面的内表面经氢氟酸处理及牙表面涂布偶联剂,也可增强两者之间的粘接强度。
Objective To explore the solution to the technical problems such as fracture, detachment, microleakage and adhesion of porcelain veneer during anterior tooth restoration. Methods to identify indications and contraindications. Prepare the tooth body, grind the two longitudinal retention grooves on the face of the tooth and lip, and coat the porcelain on the model of the fire-resistant clamshell. After the inner surface of the veneer is treated with 5% hydrofluoric acid and the coupling agent of Xu Xu, take the photo-curing resin of the corresponding package number. Results 118 porcelain veneer repaired anterior teeth, after 3 months to 1 year of observation, no loss of breakage, no staining, discoloration and coloring, gingivitis, with satisfactory results. Conclusions Two preparation methods of longitudinal cleavage ditch and lip-shaped grain-shaped tooth preparation on the lip and lip surfaces can enhance the adhesive force between the adhesive and the tooth tissue. The inner surface of the veneer by hydrofluoric acid treatment and tooth surface coating coupling agent, but also enhance the bonding strength between the two.