What can excessive use of abrasives in polishing paste lead to?

The excessive use of abrasives in polishing paste can indeed lead to enamel erosion and increased tooth sensitivity. This occurs because abrasive substances are designed to scrub and polish the surface of the teeth. However, when overly abrasive materials are used or when they are used too frequently, they can wear down the outer layer of enamel, which serves as a protective barrier for the teeth.

Enamel erosion exposes the underlying dentin more, which is softer and more sensitive than enamel. This sensitivity can manifest as discomfort when consuming hot, cold, or sweet foods and beverages. Long-term exposure can compromise the integrity of the tooth structure, leading to further issues, including increased risk of cavities.

In this context, while the other options mention various dental conditions, they do not directly relate to the consequences of excessive abrasive use in polishing paste. They focus on aspects of dental health that arise from different causes or factors. For instance, cavities and gum disease stem from bacteria and poor oral hygiene rather than excessive polishing, while crown detachment typically relates to improper fitting or bonding. Staining and discoloration can be a result of dietary choices or smoking rather than abrasive wear.