Abstract:ObjectiveThe aim of this study was to evaluate whether vertical facial patterns influence
maximal occlusal force (MOF), masticatory muscle electromyographic (EMG) activity,
and medial mandibular flexure (MMF).Material and MethodsSeventy-eight dentate subjects were divided into 3 groups by Ricketts's analysis:
brachyfacial, mesofacial and dolychofacial. Maximum occlusal force in the molar
region was bilaterally measured with a force transducer. The electromyographic
activities of the masseter and anterior tempo… Show more
“…24 Subjects with a long-face pattern showed significantly lower EMG activity of the masticatory muscles compared to squareface pattern. [25][26][27] This is in disagreement with the findings in the present study. An explanation for this disagreement could be that the deep bite group in the present study had significantly more TMD symptoms and signs than the controls 15 and this might lead to a slightly decreased EMG activity as some previous studies have shown an association between EMG activity and TMD.…”
Section: Discussioncontrasting
confidence: 99%
“…Previously, associations between EMG activity and malocclusion traits and between EMG activity and craniofacial morphology have been reported. [24][25][26][27] Patients with deep bite had significantly higher EMG activity of the masseter and temporalis muscles during mastication compared to other malocclusion traits. 24 Subjects with a long-face pattern showed significantly lower EMG activity of the masticatory muscles compared to squareface pattern.…”
“…24 Subjects with a long-face pattern showed significantly lower EMG activity of the masticatory muscles compared to squareface pattern. [25][26][27] This is in disagreement with the findings in the present study. An explanation for this disagreement could be that the deep bite group in the present study had significantly more TMD symptoms and signs than the controls 15 and this might lead to a slightly decreased EMG activity as some previous studies have shown an association between EMG activity and TMD.…”
Section: Discussioncontrasting
confidence: 99%
“…Previously, associations between EMG activity and malocclusion traits and between EMG activity and craniofacial morphology have been reported. [24][25][26][27] Patients with deep bite had significantly higher EMG activity of the masseter and temporalis muscles during mastication compared to other malocclusion traits. 24 Subjects with a long-face pattern showed significantly lower EMG activity of the masticatory muscles compared to squareface pattern.…”
“…Optocal was used to determine the X 50 because this material allows standardization of weight, size, and shape of particles using the sieve method [28]. [33]. They were protected from deformities during clenching using metal (1.0 mm in thickness) and rubber (1.2 mm in thickness) disks in both sides.…”
Knowledge that PD is associated with impaired masticatory function is important to dental professionals in decision making related to prosthetics and general dental treatment.
“…[7][8][9] Numerous studies have shown an almost linear correlation between EMG potentials and the occlusal force. [10][11][12] It has also been claimed that there is a close correlation between muscle response to force and the location of a contact force in occlusion. [13][14][15][16] Although, knowledge of occlusal contacts of both dental arches in the centric occlusion is necessary for any discussion of occlusal relations for the natural dentition and restorations, there is no consensus how to measure occlusion.…”
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