Virtually chip-proof, BruxZir milled by Oral Arts Dental Lab is a full-contour zirconia crown, bridge, inlay or onlay with no porcelain overlay. Designed and milled using CAD/CAM technology, BruxZir restorations are sintered for 6.5 hours at 1,530 degrees Celsius. The final BruxZir crown or bridge emerges nearly ”bulletproof” and is glazed for a final shade match.