Association between parafunctional habits and signs and symptoms of temporomandibular dysfunction among adolescents.

Purpose: To determine associations between signs and symptoms of temporomandibular disorder (TMD) and harmful oral habits.

Materials And Methods: Two hundred forty-four adolescents from a public school in the city of São Roque, Brazil, were evaluated. A screening questionnaire for orofacial pain and TMD recommended by the American Academy of Orofacial Pain was used to determine signs and symptoms of TMD.