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All Journal Journal of Dentistry Indonesia
Loster, Jolanta E
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Dentistry

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Reliability Assessment of the Examination of the Sounds in the Temporo­ mandibular Joints in a Polish Patient Population Osiewicz, Magdalena; Loster, Jolanta E; Wieczorek, A; Loster, Bartłomiej W
Journal of Dentistry Indonesia Vol. 26, No. 3
Publisher : UI Scholars Hub

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Temporomandibular joints (TMJs) sounds are a common phenomenon in individuals with and without temporomandibular disorders (TMD). According to the Research Diagnostic Criteria of Temporomandibular Disorders (RDC/TMD), there are the following two distinguished types of sound: click and crepitation. The implementation of diagnostic criteria in studies should be accompanied by a reliability assessment of these criteria. Objective: This study aimed to assess the intra- and inter-observer reliability of joint sounds examination, using the officially translated and culturally adapted Polish version of the RDC/TMD. Methods: Ninety-eight (n = 98) consecutive adult patients were examined during two clinical sessions by two independent examiners, based on the RDC/TMD examination. Results: The intra-observer reliability of clicking and crepitation examination was generally excellent, with fair-to-good intraclass correlation coefficient in case of crepitation during lateral movement in the same direction as the crepitation. The inter-observer reliability of clicking and crepitation was excellent; however, it was fair-to-good for clicking and crepitation during lateral movement in the same direction as the click. Conclusion: The intra-observer and inter-observer reliability of the officially translated and culturally adapted Polish version of the RDC/TMD is similar to that of examinations conducted worldwide. Therefore, the use of this examination protocol is justified in Poland.
Associations of Electromyographic Activity of Anterior Temporalis Muscles, Sex, and Occlusal Classes in Asymptomatic Young Adults Wieczorek, Aneta; Czarnek, Marcin; Loster, Jolanta E
Journal of Dentistry Indonesia Vol. 28, No. 1
Publisher : UI Scholars Hub

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Symmetry evaluation of the craniofacial complex generally involves models of mandibular movement and masticatory muscle activity, especially during the growth of the craniofacial complex. Objectives: The aim of the study was to determine what, if any, associations exist between the activity of the masticatory muscles, sex, and occlusal classes in asymptomatic young adults. Methods:18-year-old volunteers, showing no symptoms of TMD based on an RDC/TMD examination, were included in the study.Surface electromyography (sEMG) recording was used to quantify the activity of masticatory muscles. The occlusal contact points were analyzed using a T-scan III Evolution 7.01 device. Occlusal classes were graded, employing an approach based on plaster study models. Results: In Class I–II subjects, we found significant differences only in the voltage of LTA in correlation with the gender and occlusal Class. Conclusions: Our findings show that the electromyography voltage of LTA significantly differs according to sex and occlusal Class. The voltage is higher in the female occlusal class II group, while the voltage is less in the male Class I and II group. This may be responsible for the symmetry index, which shows the predominance of the right-side muscles in all gender and occlusal groups.
Co-Authors Czarnek, Marcin Loster, Bartłomiej W Osiewicz, Magdalena Wieczorek, A Wieczorek, Aneta