目的分析国产排龈线对冠桥修复后牙体、牙龈、牙周组织、修复体边缘的适合性。

Objective To analyze the adaptability of home-made gingival retraction cords applied to tooth bodies, gums, periodontiums and prosthetic margins in the state of post-fixed prosthodontic.

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目的：比较后牙烤瓷桥桥体舌侧金属支架结构改良对于瓷抗折强度的影响。

Objective:The purpose of this study was to investigate the effect of different types of pontic lingual metal framework in posterior metal-ceramic fixed bridge on the fracture resistance of porcelain.

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