Which polishing paste is recommended for delicate surfaces such as exposed roots?

The correct choice for a polishing paste recommended for delicate surfaces such as exposed roots is tin oxide. This is due to its fine abrasive qualities, which allow for effective polishing without causing damage to sensitive tooth structures. Tin oxide is gentle enough to maintain the integrity of delicate tissues while still providing the desired smoothness on surfaces that require careful handling, such as exposed dentin or roots.

In contrast, the other polishing pastes can be more abrasive. For instance, aluminum oxide is often used for its effectiveness in removing stains and smoothing rough surfaces, but it may be too aggressive for delicate areas. Calcium carbonate, while also a milder option, is typically used for general polishing and may not provide the same level of care needed for sensitive surfaces as tin oxide does. Diamond paste, although it offers superior polishing for harder surfaces, is generally too abrasive for delicate dental work, thus making it inappropriate for use on exposed roots.