What question did this study set out to answer?

This research aims to evaluate the effect of onabotulinumtoxinA treatments on mandibular morphology over a year.

April 28, 2026Open Access

Longitudinal Computed Tomographic Evaluation of Mandibular Bone Morphology Following OnabotulinumtoxinA Treatment of Masseter Muscle Prominence: Results of a 12-Month, Repeat-Treatment, Placebo-Controlled Study in Healthy Adults

SMSanjay M. MallyaUniversity of California, Los Angeles PKPaul Kostenuik RHRené Hopfinger

Key Points

This research aims to evaluate the effect of onabotulinumtoxinA treatments on mandibular morphology over a year.
Conducted a repeat-treatment, placebo-controlled study
Evaluated mandibular morphometric measures using quantitative and qualitative MDCT
Followed health adults for 12 months post-treatment
No detectable differences in mandibular morphometric measures versus placebo after 1 or 2 treatments
Safety events were localized and consistent with the drug's mechanism
Late-emerging effects beyond 12 months cannot be excluded

Abstract

Quantitative and qualitative MDCT evaluations showed no detectable differences in predefined mandibular morphometric measures versus placebo after 1 or 2 onabotulinumtoxinA treatments for MMP over 1 year. Safety events were localized and consistent with drug mechanism. Late-emerging effects beyond 12 months cannot be excluded.

KI fragen

Bookmark

View Full Paper