What is the primary ingredient in most coronal polishing pastes?

The primary ingredient in most coronal polishing pastes is abrasives like pumice or silica. These substances are specifically included to effectively remove stains and plaque from tooth surfaces without damaging the enamel. The abrasives work by providing a gentle polishing action, which helps to achieve a smoother tooth surface and enhances the overall esthetics of a patient's smile.

While fluoride is important for remineralizing teeth and preventing decay, it is not the main component of polishing pastes. Chemicals used for whitening are typically not included in coronal polishing pastes; their primary function is to brighten teeth, not to polish them. Water and glycerin are often used in the formulation for viscosity and texture, but they do not serve the primary purpose of stain removal like abrasives do. Thus, abrasives are essential for the effectiveness of coronal polishing in dental hygiene practices.