In what way does clenching and grinding affect dental health?

Clenching and grinding, also known as bruxism, can lead to various dental issues, and one significant effect is the occurrence of abfraction at the gum line. Abfraction refers to the loss of tooth structure at the gum line due to the flexural stresses that occur when excessive biting forces are applied to the teeth. These stresses can cause small fractures in the enamel and dentin, leading to the characteristic notching or wear that typically appears at the gum line.

This phenomenon occurs because the force exerted during clenching and grinding can create a mechanical overload on the teeth, making them more susceptible to wear and damage. The enamel, while strong, can crack or wear away under these conditions, exposing the underlying dentin and sometimes leading to sensitivity. This process underscores how bruxism negatively impacts dental health by contributing to structural damage, making it a key concern for dental professionals working to maintain and restore patients' oral health.

In contrast, the other options describe effects that do not align with the outcomes of bruxism. For instance, clenching and grinding do not encourage enamel strengthening, prevent tooth decay, or enhance overall tooth structure, which are all protective and constructive processes, unlike the destructive consequences seen with bruxism.