What question did this study set out to answer?

To establish a safe injection strategy for botulinum toxin in the masseter by mapping its anatomy.

April 6, 2026BioMed Research International0 citationsOpen Access

Anatomical Mapping of the Masseter for Safe Botulinum Toxin Injection: A Cadaveric Study

YZYuqi ZhaoChengdu Medical College JCJinran ChenChengdu Medical College JJJinrui JiangChengdu Medical College

Key Points

To establish a safe injection strategy for botulinum toxin in the masseter by mapping its anatomy.
Performed cadaveric analysis of the masseter muscle.
Identified the safe triangular injection zone.
Developed a three-point injection technique.
Defined precise anatomical landmarks for safe injection.
Improved accuracy in botulinum toxin delivery in the masseter.
Enhanced safety profile for microplastic injections in facial treatments.

Abstract

The three-point injection approach is presented after a comprehensive analysis incorporating the masseter injection's safe triangular zone and the masseter's internal structure. It provides a more accurate treatment strategy for the masseter microplastic injection.

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