光固化法修复金属烤瓷修复体崩瓷的临床效果研究

Clinical effect of using light-cure technique to repair porcelain fracture in PFM

目的探讨用光固化法修复金属烤瓷修复体(PFM)崩瓷的临床效果。方法对2003年9月至2008年9月建阳市立医院口腔科收治的23例PFM崩瓷病例采取折裂断面固位预备,利用10.0%～12.5%氢氟酸进行黏结面的瓷表面处理30～120s,必要时在裸露的基底冠上进行粗化或制备固位洞型,配合使用硅烷瓷处理剂和自酸蚀黏结材料,用树脂进行光固化复色充填修复。结果修复后随访观察6个月至5年,23例中20例修复后修复体无松动、脱落、变色,效果良好,成功率86.96%。3例松脱后重新修复,效果满意。结论利用光固化技术进行崩瓷口内即刻修补,具有经济、美观、简便、有效的特点,值得临床推广应用。

Objective To observe the clinical effect of light-cure technique to repair porcelain fracture in PFM. Methods 23 cases of porcelain fracture in PFM occurred during five years from 2003 to 2008. We all did the ceramic surface conditioning in advance,and the surface etched with 10.0%~12.5% hydrofluoric acid for 30 s to 120 s. If necessary,the exposing base should be coarsened or cavities prepared,then light-cured composite resin filling followed and the colors compounded with silane primer and ibond material. Results After follow-up of 6 months to 5 years,20 cases showed good result;no loosening,no discoursing and no color-turning. The success rate was 86.96%. Conclusion The light-cure technique used to repair porcelain fracture in PFM has good clinical effect.