Impact of dental asymmetries on the perception of smile esthetics

Effect of botulinum toxin-A in myofascial pain patients with or without functional disc displacement.

http://www.forp.usp.br/restauradora/oclusao/lapese/Html/PDFs/MasticatoryMuscle.pdf

Masticatory muscle activity during maximum voluntary clench in different research diagnostic criteria for temporomandibular disorders (RDC/TMD) groups

The research diagnostic criteria for temporomandibular disorders (RDC/TMD) are used for the classification of patients with temporomandibular disorders (TMD) Surface electromyography of the right and left masseter and temporalis muscles was performed during maximum teeth clenching in 103 TMD patients subdivided according to the RDC/TMD into 3 non-overlapping groups: (a) 25 myogenous; (b) 61 arthrogenous; and (c) 17 psycogenous patients Thirty-two control subjects matched for sex and age were also measured During clenching, standardized total muscle activities (electromyographic potentials over time) significantly differed: 1317mV/mV s % in the normal subjects, 1176mV/mV s % in the myogenous patients, 1053mV/mV s % in the arthrogenous patients, 887mV/mV s % in the psycogenous patients (po0001, analysis of covariance) Symmetry in the temporalis muscles was larger in normal subjects (863%) and in myogenous patients (849%) than in arthrogenous (827%), and psycogenous patients (805%) (p ¼ 0041) No differences were found for masseter muscle symmetry and torque coefficient (p4005) Surface electromyography of the masticatory muscles allowed an objective discrimination among different RDC/TMD subgroups This evaluation could assist conventional clinical assessments r 2007 Elsevier Ltd All rights reserved

Original article Masticatory muscle activity during maximum voluntary clench in different research diagnostic criteria for temporomandibular disorders (RDC/TMD) groups

The use of surface electromyography as a tool in differentiating temporomandibular disorders from neck disorders.

The purpose of this study is to evaluate the interocclusal appliance efficiency in patients with temporomandibular disorder (TMD), by using computerized electromyographic (EMG) evaluation in the rest position of the mandible. Twenty-two patients (male and female) with TMD symptoms, between 18 and 53 years of age, were examined. EMG evaluations were performed before the treatment and during the 90th, 120th and 150th day of using the interocclusal appliance therapy. In the 90th and 120th day, inserting canine guidance and group function disclusion, respectively, changed interocclusal appliance. The results showed that group function disclusion caused shorter EMG activity in the mandible rest position for the anterior temporalis muscle.

Electromyographic evaluation of masseter and anterior temporalis muscles in patients with temporomandibular disorders following interocclusal appliance treatment.

W A B E Silva

Papers

Electromyographic evaluation of masseter and anterior temporalis muscles in patients with temporomandibular disorders following interocclusal appliance treatment.