Correction of post-traumatic anterior open bite by injection of botulinum toxin type A into the anterior belly of the digastric muscle: case report
석현, 박용태, 김성곤, 박영욱,
소속 상세정보
석현 ( Seok Hyun ) - Gangneung-Wonju National University College of Dentistry Department of Oral and Maxillofacial Surgery
박용태 ( Park Yong-Tae ) - Gangneung-Wonju National University College of Dentistry Department of Oral and Maxillofacial Surgery
김성곤 ( Kim Seong-Gon ) - Gangneung-Wonju National University College of Dentistry Department of Oral and Maxillofacial Surgery
박영욱 ( Park Young-Wook ) - Gangneung-Wonju National University College of Dentistry Department of Oral and Maxillofacial Surgery
KMID : 0355620130390040188
Abstract
Post-traumatic anterior open bite can occur as a result of broken balance among the masticatory muscles. The superior hyoid muscle group retracts the mandible downward and contributes to the anterior open bite. Denervation of the digastric muscle by injection of botulinum toxin type A (BTX-A) can reduce the power of the digastric muscle and help to resolve the post-traumatic anterior open bite. A patient with a bilateral angle fracture had an anterior open bite even after undergoing three operations under general anesthesia and rubber traction. Although the open bite showed some improvement by the repeated operation, the occlusion was still unstable six weeks after the initial treatment. To eliminate the residual anterior open bite, BTX-A was injected into the anterior belly of the digastric muscle. Following injection of BTX-A, the anterior open bite showed immediate improvement. Complication and relapse were not observed during follow-up. Long-standing post-traumatic open bite could be successfully corrected by injection of BTX-A into the anterior belly of the digastric muscle without complication.
키워드
Open bite; Neck muscles; Botulinum toxins
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