What is a contraindication for performing coronal polishing?

Performing coronal polishing in the presence of periodontal disease or open lesions is contraindicated because these conditions indicate an active infection or inflammatory process in the periodontal tissues. Coronal polishing involves the use of abrasive agents to remove biofilm and stains from the tooth surfaces, which can inadvertently irritate or damage already compromised tissues. This irritation could exacerbate existing periodontal issues or lead to further complications, such as increased inflammation or pain.

In contrast, mild staining is not a contraindication because coronal polishing is often used specifically to address such aesthetic concerns. Similarly, using fluoride toothpaste and the application of dental sealants are generally complementary to oral health practices and do not pose any risks in conjunction with coronal polishing. Therefore, the presence of periodontal disease or open lesions is the primary factor that necessitates caution and prevents the safe performance of coronal polishing.