Sheeza Basharatabout 11 hours ago

PFM Crown Preparation

PFM (porcelain fused to metal) crown preparation for a molar involves reducing the tooth structure to create space for the metal and porcelain layers of the crown, typically requiring 1.5 to 2 mm of occlusal reduction, with specific depths for functional and non-functional cusps, and the creation of a shoulder or chamfer margin to ensure a proper fit. The process includes using various diamond burs for precise shaping, managing soft tissues to expose the margin, taking a putty index to guide the preparation, and carefully creating a smooth, tapered finish line free of undercuts.