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Quintessence Publishing: Journals: ORTHODONTICS
The Art and Practice of Dentofacial Enhancement

Formerly World Journal of Orthodontics

Edited by
Rafi Romano, DMD, MSc (Editor-in-Chief)

ISSN 2160-2999 (print) / ISSN 2160-3006 (online)

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Spring 2010
Volume 11 , Issue 1

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Prevalence of Signs and Symptoms of Temporomandibular Disorders in Children and Adolescents with and without Crossbites

Simona Tecco, DDS/Felice Festa, MD, DDS

Pages: 37–42
PMID: 20209175

This study investigated the prevalence of signs and symptoms of temporomandibular disorders (TMD) in 1,134 orthodontically untreated children and adolescents (593 boys, 541 girls; age range 5 to 15 years) with and without crossbites. The sample with crossbites was further grouped according to the type (anterior, posterior, unilateral, or bi­lateral). The TMD symptoms bruxism (obvious active attrition/myalgia), joint sounds (clicking/crepitation), deviation during opening, reduced functional movements (maximum opening < 40 mm), and myopain (originating in the masticatory muscles/related to masticatory functions) were evaluated based on the standardized RDC/TMD protocol (Research Diagnostic Criteria for Temporomandibular Disorders) and compared among the various groups. Girls had a significantly higher prevalence of myopain than boys (x2 = 3.882, P < .05). Furthermore, individuals with posterior unilateral crossbites showed a significantly higher prevalence of TMD symptoms (x2 = 33.877, P < .001) and reduced functional movements (x2 = 10.800, P < .05) than any other group. In conclusion, sex and type of crossbite play a role in the prevalence of TMD signs and symptoms. World J Orthod 2010;11:37–42.

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