Comparative evaluation of marginal fit, internal fit and cement space of single unit lithium disilicate crown with shoulder finish line by two different methods of fabrication

Abstract

Background: The coming era will be governed by technology. Computer aided designing (CAD) & computer aided manufacturing (CAM) dentistry is taking over the conventional dental practice establishing a benchmark in esthetics, quality and fit of the prosthesis. The fabrication of prosthesis by digital methods reduces the efforts in fabrication and time required for designing the prosthesis. Aim: This protocol aims at checking the marginal fit, internal fit and cement space of lithium disilicate crowns by comparing the two different methods of fabrication. To evaluate and compare marginal fit, internal fit and cement space of single unit “lithium disilicate crown” with shoulder finish line with two different methods of fabrication. Methods: The current study is the experimental study conducted at Sharad Pawar dental college and Hospital. The protocol has been approved by the Ethical institutional committee with ref.no.DMIHER(DU)/IEC/2023/851. All the 54 participants who will visit the O.P.D of department of prosthodontics crown & bridge will be included in the study which will be conducted over a period of two years, the subjects will be informed about the research and written consent will be taken. The inclusion criteria for this study are patients aged 18-54 years in the need of full veneer 1st molar prosthesis. All the comparative results will be calculated with the help of stereomicroscope and descriptive statistics will be performed. Expected results: The expected outcome or result proposed will be, the crown fabricated with CAD-CAM will give good fit compared to pressed method. Conclusions: Finding the accuracy in the fit and cement space of lithium disilicate crowns by conventional and digital method of fabrication will help the prosthodontist to deliver good results.