Effects of a botulinum toxin type A injection on the masseter muscle: An animal model study / 대한악안면성형재건외과학회지
Maxillofacial Plastic and Reconstructive Surgery
; : 10-2015.
Article
in En
| WPRIM
| ID: wpr-102958
Responsible library:
WPRO
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.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Botulinum Toxins, Type A
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Models, Animal
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Electromyography
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Masseter Muscle
Limits:
Adult
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Animals
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Humans
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Male
Language:
En
Journal:
Maxillofacial Plastic and Reconstructive Surgery
Year:
2015
Type:
Article