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本文介绍了适用于下颌后部牙弓的一种改良式卫生桥。其设计符合结构、功能和生物学要求,也符合了患者的心理需要。颊舌的轴面外形:桥体颊、舌面高度大约分别为牙冠高度的2/3和1/2(如图)。这种设计使颊舌部组织得以支持,并可保持颊、舌部的正常间隙感。病人感到舒适,且由于颊舌部与牙弓紧密接触,提供了必要的生理封闭。桥体构成的方法是:用蜡恢复整个牙冠外形后,沿牙冠刻划出应去除部份之标记线,然后削去标记线下方的龈方部份。蜡型必须包括连接体龈方延伸部份,以利于焊接后调整。桥体底面:颊舌向稍凸或扁平,以利于
This article presents a modified hygienic bridge for the dental arch of the posterior mandible. Its design meets structural, functional and biological requirements and also meets the patient's psychological needs. The buccal and lingual axial shape: The bridge buccal and lingual surfaces are approximately 2/3 and 1/2 of the crown height, respectively (see picture). This design supports the buccal tongue tissue and maintains a normal sense of gap between the cheeks and the tongue. The patient feels comfortable and provides the necessary physiological seal due to the buccal tongue in close contact with the dental arch. The bridge is constructed by waxing the entire crown shape, marking the part of the crown along the crown, and then removing the gingival portion beneath the marking line. Wax type must include the gingival extension of the connector body, in order to facilitate post-welding adjustment. Bridge floor: buccal tongue slightly convex or flat, in order to facilitate