Fracture Resistance of Endodontically Accessed Minimal Thickness All-Ceramic Restorations
Abstract
Advances in material science and bonding chemistry allows for fabrication of thinner all-ceramic restorations. Questions remain regarding their strength after endodontic access and repair. Objective: This study will compare the fracture resistance of three types of ceramic crowns that have been endodontically accessed and repaired. Methods: Sixty minimal thickness crowns will be digitally designed. Twenty crowns will be milled from lithium disilicate (LiS2), twenty from medium translucency zirconia (ZMT), and twenty from low translucency zirconia (ZLT). The crowns will be crystallized or sintered and adhesively bonded with a dual-cured resin cement to dies milled from a continuous filament woven fiberglass bonded epoxy resin. Ten samples of each crown type will undergo endodontic access and repair with nanohybrid composite resin. All specimens will undergo static load testing on a universal testing machine with a compressive force applied until failure. Results: Study ongoing. Conclusions: To be determined.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 28, 2021
- Accession Number
- AD1182981
Entities
People
- Anthony Y Chia
Organizations
- Uniformed Services University of the Health Sciences