What type of stains is coarse pumice designed to remove?

Coarse pumice is specifically designed to remove heavily entrenched stains from the tooth surfaces. This type of abrasive is effective because it has a gritty texture that can penetrate and scrub away tough stains that are deeply set, such as those caused by certain foods, beverages, and other factors that can lead to significant discoloration over time.

Using coarse pumice allows dental hygienists and those trained in coronal polishing to effectively clean areas where there is a buildup of plaque, tartar, and tough extrinsic staining, as the abrasiveness can tackle these more resilient deposits that milder abrasives might not be able to effectively address. It's important to select the appropriate abrasive based on the type of stain being treated, as using coarse material on lighter stains could potentially damage the enamel.