![]() 2īecause the process of subtractive manufacturing differs significantly from restorations created using the lost-wax technique, it is important to understand how milling machines work so dentists can modify their tooth preparations to achieve optimal fit and material performance from CAD/CAM restorations. The metal-ceramic interface between the strong coping and esthetic veneering porcelain is significantly weaker than even the lowest-strength all-ceramic material. This avoids the risk of chipping or fracture of the veneering porcelain from the underlying metal coping. ![]() 1 Monolithic all-ceramic restorations have an advantage over veneered metal ceramic restorations in that they do not require veneering porcelain. Subtractive manufacturing is the process of removing material from a lab-processed, homogenous, monolithic block with diamond or carbide burs to create the shape of the restoration. As CAD/CAM becomes pervasive in dental laboratory and chairside workflows, it is important for clinicians to understand the subtractive manufacturing process in order to optimize clinical outcomes for CAM restorations. Today’s computer aided design/computer aided manufacturing (CAD/CAM) milling equipment relies on subtractive processes to fabricate the desired clinical restoration. I n modern restorative dentistry, the clinician enjoys the luxury of multiple all-ceramic materials to restore function and esthetics in compromised teeth.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |