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Use of a cast flexible plate as a hinge substitute in a hinge-lock design removable partial denture framework
1Center for Dental Technology, Faculty of Community Health Sciences, University of Wales Institute, Cardiff, United Kingdom.
The Journal of Prosthetic Dentistry
|August 26, 1998
Abstract
Purpose:
The use of a hinge for a removable partial denture with an opening labial bow was replaced by the design and construction of a flexible plate incorporated as part of a cobalt-chromium casting.
Methods:
Three similar prostheses were constructed and tested in vitro on an endurance test machine. Each test piece completed 12,000 opening and closing operations without fracture, which a previous study showed is a probable life cycle of a typical removable partial denture with a hinged section.
Results:
This plate provided sufficient flexibility to allow functional operation of the removable partial denture by a patient.