Treatment of Masseter Mysofascial pain with botulinum was successful in 64% of cases.
A Review of Treatment Outcomes for Patients Receiving Intra-masseteric Botulinum Toxin-A for the Management of Facial Myofascial Pain
Reem Ali et al
British Journal of Oral and Maxillofacial Surgery December 2017; 55(10), Page e146
http://www.bjoms.com/article/S0266-4356(17)30455-2/fulltext
- 59 cases
- botulium dose not specified but going to be maybe ?50 units
- 38 = 64%cases were better
Comment – With injecting face, suggested stay below jaw line:
Important spot includes the deep masseter which is close to vertical jaw and felt with finger in mouth. – you feel it as a band immediately in front of jaw bone