What is a key contraindication for performing coronal polishing?

Patients with highly sensitive teeth represent a key contraindication for performing coronal polishing because the polishing process can exacerbate discomfort and pain for these individuals. Coronal polishing typically involves the use of a rotating rubber cup and abrasive paste, which can lead to increased sensitivity, particularly in those with gum recession, exposed dentin, or pre-existing sensitivity issues.

In contrast, the other choices do not inherently contraindicate coronal polishing. Patients with braces often require coronal polishing to maintain oral hygiene around the brackets, while those without plaque buildup may not necessitate polishing but can still undergo the procedure if indicated for aesthetic reasons. Finally, a recent dental cleaning does not prevent polishing, as it may still be performed to refine the smoothness and shine of teeth. Thus, understanding the impact of tooth sensitivity is crucial when deciding whether to proceed with coronal polishing.