Journal of the Korean Association of Oral and Maxillofacial Surgeons : eISSN 2234-5930 / pISSN 2234-7550

Fig. 1.

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Fig. 1. Ultrasonography (USG)-guided intraoral botulinum toxin type A (BTX) injection in the lateral pterygoid muscle (LP). A. Injection of BTX in the LP via the intraoral approach, with placement of the ultrasound probe on the extraoral side. B. The BTX injection needle was advanced lateral to the maxillary tuberosity, directed toward the neck of the condyle. C. A skull model demonstrates the needle entry point into the LP. D. USG image of BTX injection into the LP. The broken arrow indicates the coronoid process (hyper-echoic), whereas the short arrow indicates a needle inserted into the LP.
J Korean Assoc Oral Maxillofac Surg 2024;50:41~48