Many musicians physically develop around their instruments, and this can occasionally result in physical problems. For example, string players may develop asymmetrical muscle development in their left and right arms due to the demands of their instrument. Wind players may experience breathing difficulties or tension in the neck and shoulders from holding their instrument for extended periods.
For clarinet players, the physical evolution can be particularly dynamic inside the mouth. Especially the structure of the bite goes through changes throughout the entire life, causing some problems without any warning in moments you wouldn't expect. For instance, it is very common amongst clarinet players (but also many other woodwind instruments) to have an uncentered embouchure, as a direct consequence of the incisor’s asymmetry. This disregarded issue, when accompanied by a malocclusion , can result in pain in one or more of the front teeth, dental mobility, jaw problems, tension, pain, and uncontrollable muscular vibrations. Moreover, it engenders a time-consuming search for the sweet spot to comfortably generate the best sound.
 A malocclusion is a non-ideal arrangement of the teeth.