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烤瓷及金属—烤瓷修复体的折裂在口腔修复中虽然并不普遍,但却是一个令人棘手的问题。采用复合树脂修补折裂烤瓷的各种方法已有过介绍。本文采用四种不同的烤瓷表面处理方法及三种粘按剂用于复合树脂与烤瓷的粘接,并评价其粘接强度。 制作60个烤瓷体钮扣(直径约1 cm,厚0.5 cm)。将Vita VMK68瓷粉烧熔,再用磨光湿砂纸将样本表面抛光。将60个样本随机分成4组处理表面:①在水冷却下用金刚钻打磨粗化,水冲洗,无油压缩空气干燥。②用9.6％的氢氟酸(HF)酸蚀2分钟,冲洗1分钟,然后空气
Fractures of porcelain and metal-ceramic restorations are not uncommon in dental restorations, but they are a thorny issue. Various methods of using composite resin to repair broken porcelain have been introduced. In this paper, four different ceramic surface treatment methods and three kinds of sticky agent are used to bond the composite resin and porcelain, and the bonding strength is evaluated. Produce 60 porcelain buttons (diameter of about 1 cm, thickness 0.5 cm). The Vita VMK68 porcelain powder is fired and the sample is then polished with a damp wet sandpaper. The 60 samples were randomly divided into 4 groups of treatment surface: ① diamond grinding in the water cooling coarsening, water rinse, oil-free compressed air drying. ② With 9.6% hydrofluoric acid (HF) acid etching 2 minutes, rinse for 1 minute, then air