| 摘要 |
A denture retention system includes a denture and an abutment. The denture has an inner channel with an elastic liner having shaped cavities. The cavities have a shaft, a head at the closed end of the shaft and a concave ring between two convex sections on the shaft. The abutment has a shaft, a head at one end of the shaft, a protruding ring between two concave sections on the shaft and a threaded portion at the other end of the shaft portion. The surface of the cavity overlaps and engages the surface of the abutment to retain the denture in the cavity. The threaded part of the abutment threads into an implant or implants into a jaw. The cavity expands when the abutment is inserted or removed from the cavity, and contracts after insertion.
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