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随着陶瓷材料在牙体缺损修复中的广泛应用,其边缘的适合性越来越受到重视。本研究的目的是讨论用耐火材料制作的代型和瓷的膨胀系数匹配时,能否增加修复体边缘的精度,并减小裂隙的宽度。 将右上颌第一双尖牙制备成嵌体的预备体,用聚乙烯硅氧烷材料取模,做蜡型。用W-1型银钯合金铸造,形成金属复制品,再用中等粘度的聚乙烯硅氧烷取30个印模,用Ⅳ型熟石膏翻制代型。然后再取印模复制代型,其中15个用与瓷相匹配的Fortune耐火瓷系
With the wide application of ceramic materials in the repair of dental defects, the edge of the fitness more and more attention. The purpose of this study was to discuss whether matching the coefficient of expansion made of a refractory material with that of a porcelain increases the accuracy of the edge of the restoration and reduces the width of the fracture. The right maxillary first bicuspid preparation prepared inlay preparation, poly vinyl silicone mold material, do wax. Cast with a W-1 type of silver-palladium alloy to form a metal replica, then use a medium-viscosity polyethylene siloxane to take 30 impressions and use a type IV plaster cast. Then take the copy mold replica, of which 15 with porcelain matching Fortune refractory porcelain