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Oromandibular Dystonia Causing Recurrent Mandibular Open Lock in Two Adolescents Managed with Botulinum Toxin

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Mandibular open lock is a condition in which the patient is unable to close his/her mouth. This is an uncommon condition in children and adolescents that, when recurrent, can severely affect their quality of life. It can also prove to be a challenge for the clinician. When a mandibular open lock is caused by a sustained, recurrent, and involuntary muscle contraction of the inferior lateral pterygoid muscle, it is considered a oromandibular dystonia (OMD). A thorough understanding of the anatomy and function of the temporomandibular joint and the associated masticatory and orofacial muscles is essential to establish the correct diagnosis, allowing the selection of proper treatment. The purpose of this report is to present two cases of OMD in 13-year-old girls managed with onabotulinum toxin A injections into the inferior lateral pterygoid muscle. (J Dent Child 2019;86(1):47-52)
Received May 9, 2018; Last Revision September 3, 2018; Accepted September 4, 2018.
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Keywords: ADOLESCENCE; BOTULINUM TOXIN THERAPY; MANDIBULAR OPEN LOCK; OROMANDIBULAR DYSTONIA

Document Type: Case Report

Affiliations: 1: Assistant professor, graduate program director and chief, Division of Pediatric Dentistry, University of Kentucky School of Dentistry, Lexington, KY., USA., Email: [email protected] 2: Professor, chief and director, Orofacial Pain Program, Department of Oral Health Science, both at the University of Kentucky School of Dentistry, Lexington, KY., USA.

Publication date: January 1, 2019

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  • Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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