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CAUSE OF TECHNICAL FAILURES OF CONICAL CROWN-RETAINED DENTURE (CCRD): A CLINICAL REPORT  

Yi Yang-Jin (Department of prosthodontics and research institute of oral science, College of dentistry, Kangnung National University)
Cho Lee-Ra (Department of prosthodontics and research institute of oral science, College of dentistry, Kangnung National University)
Park Chan-Jin (Department of prosthodontics and research institute of oral science, College of dentistry, Kangnung National University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.41, no.6, 2003 , pp. 714-719 More about this Journal
Abstract
Conical crown-retained denture (CCRD) has been used as a very effective treatment method in cases with few remaining teeth with heterogeneous prognosis. However, in spite of many advantages of CCRD, high technical failure rate was a problem to be considered. Incorrect path of insertion and excessive retention were thought to be the main cause of technical failure and to result from laboratory procedure with a coping misfit and/or a coping transfer error. In order to prevent this error, secure anchoring of inner coping and re-examination and milling of convergence angle were recommended on the master model from pick-up impression.
Keywords
Conical crown-retained denture (CCRD); Technical failure; Misfit; Path; Error; Retention;
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