What polishing agent is recommended for porcelain and composite materials?

The recommended polishing agent for porcelain and composite materials is a prophy cup with toothpaste. Toothpaste contains mild abrasives and a formulation designed to be safe for the enamel and non-metal materials while effectively polishing the surfaces without causing damage. This method allows for a gentle yet effective polishing action that helps to maintain the integrity and luster of the porcelain and composite finishes.

Using coarse grit pumice can be too abrasive and may scratch or damage these delicate materials. A toothbrush, while it can help with cleanliness, does not provide the necessary polishing effect that a prophy cup with toothpaste does. The notion that any grit strength would be effective is misleading because it suggests that all abrasives are suitable for all surfaces, which is not the case; inappropriate grit can lead to surface damage or deterioration of the materials being polished. Therefore, choosing the correct agent is critical in maintaining the aesthetic and functional properties of porcelain and composite restorations.