[摘要]排龈技术的应用，对提高修复体边缘的适合性、减少修复的并发症起到了重要的作用。本文就排龈技术的生理药理学基础、排龈材料的种类和剂型、临床上应用的各种排龈方法的技术特点进行综述，以期为排龈技术在临床中的应用提供指导。

    [关键词]排龈材料；排龈方法；固定义齿

    [中图分类号]R 783.3[文献标志码]A[doi]10.3969/j.issn.1673-5749.2012.04.034

    Development of gingival retraction technologyXu Xiaohua1, Cao Xiaoma2, Li Quanli1.(1. Medical College of Stomatology, Anhui Medical University, Hefei 230032, China; 2. Dept. of Stomatology, The Second People’s Hospital of Hefei, Hefei 230032, China)

    [Abstract]Gingival retraction technique has been widely used in fixed prosthesis to promote its marginal adaptation, and reduce its complication. This review summarized the available evidence with respect to current methods of gingival retraction, such as mechanical, chemical, surgical, combination of the three aspects, and to provide the clinician with practical tips.

    [Key words]gingival retraction material；gingival retraction method；fixed prosthesis

    修复体颈缘的适合性对修复体长期功能的维持和基牙牙周组织的健康有着极其密切的关系。获得具有清晰边缘线的基牙模型是获得修复体边缘适合性的关键，它依次决定于基牙预备的质量、游离龈的处理(排龈技术)和印模技术。一方面，排龈技术在牙体预备过程中可以减少牙周损伤，使术野清晰，方便制备肩台；另一方面，在取模时保持基牙边缘干燥、龈缘与牙面分开 ......