What is the main reason for using a prophy brush during a mechanical polish?

The primary purpose of using a prophy brush during mechanical polishing is to ensure a smoother surface finish on the teeth after they have been cleaned. The prophy brush is designed to effectively polish the tooth surface, which helps remove any residual plaque and biofilm that may be present in the grooves or fissures of the teeth.

Using a prophy brush allows for a more thorough cleaning compared to manual methods, as it can reach into the small grooves and corners of the teeth where plaque tends to accumulate. This polishing action contributes to not only an aesthetically pleasing appearance but also helps prevent future plaque accumulation by creating a smoother surface that is less conducive to the adherence of bacteria and debris.

Ultimately, this process is fundamental in maintaining oral health and preventing dental issues such as caries and periodontal problems.