National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

Polishing teeth for excessive durations with pumice can lead to deterioration of gum health. Pumice is an abrasive material designed to remove extrinsic stains from teeth, but if used too aggressively or for extended periods, it can damage not only the enamel but also the soft tissues in the mouth, such as the gums. This can result in gingival irritation, recession, or even injury to the epithelial lining of the gingival sulcus.

The other options, while potentially relevant in different contexts, do not accurately reflect the consequences of excessive polishing. For instance, while polishing can improve aesthetic appearance, if done excessively, the risks to gum health overshadow any cosmetic benefits. Similarly, the idea that polishing would lead to an increase in enamel hardness is misleading, as abrasive polishing can actually wear down enamel over time. Finally, while polishing may temporarily reduce the appearance of plaque, excessive or improper use does not contribute to long-term plaque control and may instead compromise the health of supporting structures in the mouth.