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Volume 13 , Issue 1
January/February 1998
Pages 77-81

Effect of Prefabricated Bar Design With Implant-Stabilized Prostheses on Ridge Resorption: A Clinical Report

Paul S. Wright, PhD, BDS, FDSRCS(Eng), Roger M. Watson, MDS, BDS, FDSRCS(Eng)

PMID: 9509783

This investigation was concerned with the resorption of the posterior mandibular residual ridge in patients wearing mandibular overdentures supported by either parallel-sided bars (rigid joint) or oval straight bars (resilient joint) on two activated implants. Rotational tomographs were taken shortly after implant placement and up to 8 years later. Using proportional measurement, the area of residual ridge was measured in bilateral posterior areas. Patients rehabilitated with implant-stabilized mandibular overdentures demonstrated posterior mandibular residual ridge resorption at low rates, which were not significantly influenced by the design of the prefabricated bar. (INT J ORAL MAXILLOFAC IMPLANTS 1998;13:77-81) Key words: bone resorption, dental implants, mandible, overdentures, residual ridge

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