The effect of clear aligners with posterior occlusal attachments on daytime masticatory muscle activity

Aligners encroaching into the FWS transiently increase MMA in healthy young adults, despite adaptation and diminishing discomfort. However, we found no convincing evidence to support the hypothesis that occlusal attachments contribute to vertical control or enable intrusion in the short term. More research is needed to assess long-term effects and determine whether intrusions become clinically relevant.