Evaluation of Clinical Marginal Adaptations of the Copings Fabricated in Cad Cam - Retrospective Study

Abstract

CAD CAM Technology is a computer aided design and manufacturing system for the production of crowns.
A variety of metal and all ceramic materials is available for the crown fabrication. The accuracy and the fit of
the prosthesis depends on the CAD CAM system and each component individually like the milling and the
scanner units. The aim of the present study was to determine the marginal adaptations of copings fabricated
with CAD CAM and to analyse which technique has been used commonly to check the marginal fit of the
copings. The study was carried out on a hospital setting with ethical approval. The records of the patients
were collected and Chi square test was done to evaluate the results. From the overall study, it was found that
there were different methods for the evaluation of fit of the copings. Most of the FPD patients were in the
age group of 26 to 40 years. Most common method for checking marginal fit adaptation was RVG/IOPA. (p
value =0.37) which is not statistically significant, followed by the catching on probing and the fit checker.