What is typically used to restore extensive Class II Decay?

Restoring extensive Class II decay requires materials that can provide durability, strength, and longevity given the significant structural loss of tooth tissue in these cases. Gold or porcelain inlays, onlays, or crowns are particularly suitable because they can withstand the considerable biting forces in back teeth while also offering excellent aesthetic options and biocompatibility.

Inlay and onlay restorations are specifically designed to fit into or onto the affected tooth structure and are more robust than traditional fillings. Porcelain can match the natural tooth color, making it aesthetically pleasing, while gold offers exceptional strength. Both options ensure that the restoration lasts longer and provides effective tooth function.

Other materials, like amalgam and composite resin, have their place, especially for less extensive decay. However, for extensive Class II cavities, they may not provide the same level of strength or restoration capability. Sealants, on the other hand, are preventive measures primarily used on sound teeth to prevent decay and would not be appropriate for treating existing extensive decay. Thus, choosing inlays, onlays, or crowns is the most appropriate decision in this scenario.