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.
了解边缘性龈炎及龈增生的组织病理特点。
To grasp histopathological feature of marginal gingivitis and gingiva hyperplasia.
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