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临床上对少数牙缺失的病例,在作固定桥义齿修复时,设计是一个重要的问题,其中桥体形态的设计是一容忽视的问题。桥体设计应具备的要求是,恢复咀嚼、发音、美观、舒适、便于清洁洗刷和对牙周组织无害等。但目前还没有一种能完全满足上述条件要求的桥体形态。在临床上必须遵守这样一条原则,根据不同病例的口腔具体情况,设计制作各种组织面(龈底面)形态的桥体。本文主要以保护牙周组织健康的观点,着重围绕桥体的组织面形态与便于清洁的问题。对几个具有代表性的桥体类型加以综述如下: 一、桥体的形态和特征 (一)鞍基型桥体鞍基型桥体是一种外观和天然牙牙冠形态相类
Clinically, a small number of cases of missing teeth, fixed bridge prosthesis in the repair, the design is an important issue, in which the design of the bridge shape is a neglected issue. Bridge design should have the requirement to restore chewing, pronunciation, beautiful, comfortable, easy to clean and brushing and periodontal tissue harmless. But at present, there is not a kind of bridge body that can fully meet the above requirements. In clinical practice, we must abide by such a principle, according to the specific circumstances of different cases of oral cavity, the design of various organizational surface (gingival floor) form of bridge. This article is mainly to protect the health of periodontal tissue point of view, focusing on the bridge around the tissue surface morphology and easy to clean the problem. Several representative bridge types are summarized as follows: First, the shape and characteristics of the bridge (A) Saddle-type bridge Saddle-based bridge is a kind of appearance and natural tooth crown similar