Effects of a botulinum toxin type A injection on the masseter muscle: An animal model study.

Maxillofacial plastic and reconstructive surgery 2015 Vol.37(1) p. 10

Park SY, Park YW, Ji YJ, Park SW, Kim SG

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Abstract

[BACKGROUND] The aim of this study was to investigate the effect of a botulinum toxin type A (BTX-A) injection in the masseter muscle using electromyography (EMG) in an animal model.

[METHODS] Ten male adult (>3 months of age) New Zealand white rabbits were used. Muscle activity was continuously recorded from 8 hours before to 8 hours after BTX-A injection. The rabbits received unilateral BTX-A injections of either 5 units (group 1, n = 5) or 20 units (group 2, n = 5).

[RESULTS] The masseter muscle activity of the rabbits was significantly reduced immediately after BTX-A injection (P < 0.05 for both groups). When the results from group 1 were compared with those from group 2, only the peak voltage was significantly decreased in group 2 (P = 0.013).

[CONCLUSION] Masseter muscle activity measured by EMG was immediately decreased after a BTX-A injection.

추출된 의학 개체 (NER)

유형영어 표현한국어 / 풀이UMLS CUI출처등장
시술 botulinum toxin 보툴리눔독소 주사 dict 2

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