Association of posterior occlusal support with ultrasonographic characteristics of the masseter muscle: a prospective single-center study.

Researchers used ultrasound to examine how posterior tooth support relates to masseter muscle size, elasticity, and texture in 108 healthy adults, finding that reduced posterior support was associated with thinner, smaller masseter muscles with less capacity to change during clenching.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.