Botulinum toxin-A injection into the anterior belly of the digastric muscle for the prevention of post-operative open bite in class II malocclusions: a case report and literature review
10.1186/s40902-019-0201-9
- Author:
Yei Jin KANG
1
;
Bong Kuen CHA
;
Dong Soon CHOI
;
In San JANG
;
Seong Gon KIM
Author Information
1. Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 28644 Republic of Korea. kimsg@gwnu.ac.kr.
- Publication Type:Case Report
- From:Maxillofacial Plastic and Reconstructive Surgery
2019;41(1):17-
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND:Class II malocclusion patients with hyperdivergent facial types are characterized by short mandibular body lengths and anterior open bite. Accordingly, the treatment for hyperdivergent skeletal class II malocclusion is a lengthening of the mandibular body length and a counterclockwise rotation of the mandible. To prevent post-operative relapse, botulinum toxin-A (BTX-A) injection can be a retention modality.CASE PRESENTATION: A class II open-bite patient received BTX-A injection to the anterior belly of her digastric muscle for the prevention of post-operative relapse. The relapse was evaluated via a clinical examination and a lateral cephalometric radiograph after the completion of post-surgical orthodontic treatment. The patient showed stable occlusion without any signs of relapse at 15 months post-operatively.
CONCLUSION:In this case presentation, a single injection into the anterior belly of the digastric muscle was sufficient for the prevention of post-operative open bite.
