Facial volume reduction and masticatory function after masseter botulinum toxin injection: a prospective study.

ABSTRACT:

Background

Botulinum toxin type A (BTX-A) is widely used for masseter reduction to improve lower facial contour. While its esthetic effects are well established, the potential impact on masticatory function remains unclear, particularly in healthy individuals. This study aimed to evaluate changes in facial volume, patient satisfaction, and perceived chewing function following BTX-A injection.

Methods

A quasi-experimental clinical trial was conducted in 24 healthy adults who received bilateral masseter injections of BTX-A (50 units total). Lower face volume was assessed using 3D stereophotogrammetry at baseline and at 4, 8, and 12 weeks post-injection. Patient satisfaction was measured using the FACE-Q™ questionnaire, and masticatory function was assessed with the Chewing Fun

SUBMITTER: Sawadsopanont N 

PROVIDER: S-EPMC12512921 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature