Clinical evaluation and comparison of 3D printed and milled indirect composite restoration a randomized clinical trial

This study is designed to clinically evaluate the performance of CAD CAM composite resin indirect restorations fabricated using two different manufacturing techniques.  A total of 30 endodontically treated 1st Molar teeth will be prepared to receive Indirect Composite Restorations and will be divided into 2 groups with 15 prepared molars in each group. Tooth preparation will be done based on the ideal & minimally invasive tooth preparation principles. Digital Impression of the prepared teeth will be made with an intra-oral scanner (3 shape TRIOS 3). The scans obtained will be exported to EXOCAD a designing software for designing and fabrication of crowns using composite resin, 15 composite crowns will be 3D printed and 15 milled. Based on the Randomized patient chart these crowns will be delivered to the operator and cemented using the standard bonding protocols, thus, the clinician and patient will be blinded about the process being used for the fabrication of the crown. Clinical Evaluation will be done by using Revised FDI (2022) criteria, where it will be clinically evaluated on the day of restoration delivered (baseline), 6month and 1 year.