Ultrasound-guided intraoral botulinum toxin injection into the lateral pterygoid muscle for chronic temporomandibular joint dislocation
10.5125/jkaoms.2024.50.1.41
- Author:
Sung-Tak LEE
1
;
Dohyoung KIM
;
Jae-Hyeong PARK
;
Tae-Geon KWON
Author Information
1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
- Publication Type:CASE SERIES STUDY
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2024;50(1):41-48
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objectives:Botulinum toxin type A (BTX), a powerful neurotoxin, can be an effective treatment choice for diverse muscular disorders and can reduce abnormal muscle activities. Abnormal movements of the mandible can be caused by involuntary and uncontrolled contractions of the lateral pterygoid muscle (LP) in various pathological situations. Previous reports have shown that BTX can reduce abnormal contractions of the LP. However, needle placement into the LP for BTX injection requires skill, experience, and sufficient anatomical knowledge. To place the needle precisely into the LP, ultrasonography (USG) can be used as an effective needle-guidance modality. USG is a non-invasive imaging modality able to create real-time imageswithout any potential risks, including radiation exposure. Patients and Methods: The patients who had been performed USG-guided BTX injection into the LP using an intraoral approach were included in this study with a literature review and case presentations. Using the USG, four patients received BTX injections to treat recurrent temporomandibular dislocation and oromandibular dystonia resulting from involuntary LP activity.Result: Involuntary movements of the mandible were improved successfully in all patients, and showed satisfactory results without significant complication.
Conclusion:The intraoral approach could prevent potential complications during needle placement. USG-guided BTX injection is an effective, con-venient, and safe method that provides real-time imaging without unnecessary pain to the patient.
