Temporomandibular joint dislocation due to acute propranolol intoxication

Aghabiklooei, A. and Elahi, H. and Mostafazadeh, B. (2010) Temporomandibular joint dislocation due to acute propranolol intoxication. International Medical Case Reports Journal, 3 (1). pp. 59-61.

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Temporomandibular joint (TMJ) dislocation has not previously been reported as a complication of beta-blocker toxicity. We are reporting two cases of TMJ dislocation resulted from acute severe intoxication with pure propranolol (PPL) for the first time. Bilateral TMJ dislocation happened in two patients who were admitted to intensive care unit with diagnosis of severe acute PPL toxicity. Clinical diagnosis of TMJ dislocation was obtained by physical examination. Successful reduction was performed for both patients without subsequent recurrence in two weeks following hospital discharge. Both of our subjects had no previous history of lower jaw dislocation. There was not any risk factor for dislocation such as convulsion during admission period, recent face trauma, or oral manipulation by the medical team. This study showed that TMJ dislocation may occur after severe acute PPL toxicity probably due to spastic contraction of the lateral pterygoid muscle. This is against previously mentioned hypothesis that stated masseteric muscles contraction as the main cause of a bilateral dislocated TMJ. © 2010 Aghabiklooei et al, publisher and licensee Dove Medical Press Ltd.

Item Type: Article
Additional Information: cited By 2
Uncontrolled Keywords: atropine; bicarbonate; dopamine; glucagon; glucose; insulin; potassium chloride; propranolol, adult; article; bone radiography; bradycardia; case report; convulsion; disease severity; face injury; female; fracture reduction; human; laboratory test; masticatory muscle; metabolic acidosis; muscle contraction; physical examination; risk factor; shock; symptomatology; temporomandibular joint disorder
Subjects: WE Musculoskeletal System
Depositing User: s shekarchi shekarchi
Date Deposited: 02 Oct 2021 09:33
Last Modified: 02 Oct 2021 09:33
URI: http://eprints.iums.ac.ir/id/eprint/21191

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