Retrospective analysis shows ultrasound assessment reduces bulging risk after botulinum toxin injections, suggesting effective management strategies.
Preoperative ultrasound assessment of masseter and DIT characteristics, combined with individualized layered injection and intraoperative tactile feedback, effectively mitigates PMB risk. Ultrasound-guided precise supplementary injection is the preferred intervention for PMB management.
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Sun et al. (2026) studied this question.
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