A Novel Intermediate Chairside Composite Crown System

A novel intermediate chairside composite crown system was developed for practitioners to create a durable, esthetic, cost-effective full-coverage crown restoration in one office visit. Objective: The objective of this study was to evaluate this chairside composite crown system for dental applications. Method: Transverse strength (TS) and flexural modulus (FM) specimens (2 x 2 x 25mm), compressive strength (CS) specimens (f=4mm, height=6mm), diametral tensile strength (DTS) specimens (f=6mm, height=3mm), fracture toughness (FT) triangular prism specimens (6 x 6 x 6 x 12mm) of the chairside crown composite were polymerized with Dentsply Spectrum 800 curing light. Specimens of commercially available materials were polymerized with Dentsply Enterra visible-light curing unit or according to manufacturers' instructions. TS, FM and radiopacity were tested according to ISO 4049 (2000), CS, TDS, FT and BH were tested using Caulk internal test methods. Results: Chairside crown composite has mechanical properties and Barcol hardness superior to those of commercially available provisional materials. Their properties are comparable to commercially available long-term crown composites tested. Chairside composite crown system has the best radiopacity among tested materials. Conclusion: A novel intermediate chairside composite crown system has been developed with excellent physical and mechanical properties and radiopacity.