Invention Grant
US08118595B2 Conforming gingiva retraction compression cap and method of retracting tissue around a tooth 有权
符合牙龈退缩压缩帽和回缩牙齿周围的组织的方法

Conforming gingiva retraction compression cap and method of retracting tissue around a tooth
Abstract:
A rolled compression cap having a central bore. The rolled compression cap has adjacent layers that slide or telescope to conform to the prepared tooth and to apply more direct mechanical pressure to the interface between the prepared tooth and the gingiva. The gingiva or gum retracts from the tooth forming or widening a gingival sulcus. This improves the preparation of the tooth for taking an impression and fitting a crown or cap. In one embodiment, a rolled compression cap is pre-dosed or soaked with an astringent material or retraction agent. In another embodiment, the central bore of the rolled compression cap is filled with a paste-like or gel material containing an astringent or hemostatic agent.
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