Comparative evaluation of marginal and internal fit of single posterior implant retained crown fabricated using conventional and digital impression workflow- an in vivo study

Abstract

ABSTRACT STATEMENT OF PROBLEM The introduction of digital impression technology has greatly changed the accuracy of prosthesis, while traditional/conventional impression techniques, still in use have also shown to produce acceptable prosthesis with regards to fit of the prosthesis. The latest technology in prosthetic dentistry for fabrication of crown is CAD/CAM technology and Direct Metal Laser-sintering (DMLS). Implant-supported ceramic fused to metal crowns are commonly utilized. As a result, numerous researchers have assessed the fit accuracy between metal copings and abutments, and they have come to the conclusion that the production techniques, metal alloys, as well as impression technique used may all have an impact on the fit of the restoration even in digital technology. Hence, the adaptation and accuracy of implant crowns depending upon the fabrication as well as impression technique still remains unclear. PURPOSE To evaluate marginal & internal fit of single posterior implant retained crowns fabricated using conventional and digital impression workflow.