Open AccessEffects of ultrasound-assisted botulinum neurotoxin-A injection in patients with bruxism and masseter hypertrophy
Author(s) -
Demirhan Dıraçoğlu,
Tuğba Şahbaz,
Kerem Alptekin,
Nalan Dogan
Publication year - 2021
Publication title -
turkish journal of physical medicine and rehabilitation :
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.235
H-Index - 5
ISSN - 2587-1250
DOI - 10.5606/tftrd.2021.6288
Subject(s) - masseter muscle , medicine , muscle hypertrophy , ultrasound , ultrasonography , urology , anatomy , surgery , radiology
Objectives: This study aims to explore effects of ultrasound-assisted injection of the botulinum neurotoxin-A (BoNT-A) on muscle thickness (MT) in patients with masseter hypertrophy. Patients and methods: Between December 2018 and December 2019, a total of 20 patients (3 males, 17 females; mean age: 28±6.9 years; range, 18 to 42 years) with bruxism who underwent BoNT-A injections were reviewed retrospectively. The patients were treated using individualized injection dosages and sites. Assessment methods included length between the tragus and the angle of the mouth, maximal bite force, and MT of the masseter muscle. Follow-up data were collected from the hospital electronic database. Results: There were 26 masseter muscles with masseter hypertrophy in 20 patients. There was a significant difference in ultrasonographic measurements of the relaxed and contracted masseter muscles between the baseline and two weeks, one month and three months after the treatment (p 0.05). Conclusion: The MT decreases after a single dose of BoNT-A injection in patients with masseter muscle hypertrophy and ultrasonography is a convenient imaging modality for BoNT-A injection to the masseter.