THE INFLUENCE OF DIFFERENT POSTURAL POSITIONS AND VISUAL INPUT ON RECRUITMENT OF MASTICATORY MUSCLES: A FEASIBILITY STUDY

reserved9mixedRozin Kleiner, Ana Francisca; Pimenta Ferreira, Cláudia Lucia; Cestaro, Giovana; Fosatto Luiz, Regiani Elvira; da Silva, Vania Daniela Ramos; Nanussi, Alessandro; Zago, Matteo; Sforza, Chiarella; Galli, ManuelaRozin Kleiner, Ana Francisca; Pimenta Ferreira, Cláudia Lucia; Cestaro, Giovana; Fosatto Luiz, Regiani Elvira; da Silva, Vania Daniela Ramos; Nanussi, Alessandro; Zago, Matteo; Sforza, Chiarella; Galli, Manuel

Body center of mass displacements during walking with low- and high-heeled shoes

A window of opportunity for maternal programming of neonatal development is open in the first few days of life as a consequence of nursing. Colostrum (first milk) supports neonatal development by providing a conduit for delivery of milk-borne bioactive factors, exemplified by relaxin, from mother to offspring as proposed in the lactocrine hypothesis. Relaxin, a prototypical milk-borne bioactive factor, is detectable in colostrum from multiple species, including the pig. Thus, relaxin serves as a model for understanding lactocrine signals that support development of neonatal tissues

Electromyographic indices, orofacial myofunctional status and temporomandibular disorders severity : a correlation study

This study examined whether there is an association between surface electromyography (EMG) of masticatory muscles, orofacial myofunction status and temporomandibular disorder (TMD) severity scores. Forty-two women with TMD (mean 30. years, SD 8) and 18 healthy women (mean 26. years, SD 6) were examined. According to the Research Diagnostic Criteria for TMD (RDC/TMD), all patients had myogenous disorders plus disk displacements with reduction. Surface EMG of masseter and temporal muscles was performed during maximum teeth clenching either on cotton rolls or in intercuspal position. Standardized EMG indices were obtained. Validated protocols were used to determine the perception severity of TMD and to assess orofacial myofunctional status. TMD patients showed more asymmetry between right and left muscle pairs, and more unbalanced contractile activities of contralateral masseter and temporal muscles (p< 0.05, t-test), worse orofacial myofunction status and higher TMD severity scores (p< 0.05, Mann-Whitney test) than healthy subjects. Spearman coefficient revealed significant correlations between EMG indices, orofacial myofunctional status and TMD severity (p< 0.05).In conclusion, these methods will provide useful information for TMD diagnosis and future therapeutic planning

Surface electromyography before and after orthognathic surgery and condylectomy in active laterognathia: a case report

Background Condylar hyperplasia is a rare bone disease characterised by excessive development of mandibular condyle, which can lead to the development of asymmetric facial deformity together with malocclusion, mandibular deviation, TMJ and masticatory musculoskeletal system dysfunction. There is not a treatment protocol universally accepted. In order to determine the correct management, treatment and intervention timing of these patients, morphological examinations should be coupled with functional assessments. Case report In the present case report, morphological (bone scintigraphy; orthopantomography; posteroanterior and lateral cephalograms; 3D facial photographs) and functional (surface electromyography of masseter and temporalis muscles) quantitative data of a 20-year-old male patient affected by unilateral condylar hyperplasia are presented. The patient underwent a surgical treatment with high unilateral condylectomy associated to a maxillary Le Fort I osteotomy; as well as orthodontic treatment before and after surgery. Facial morphology and masticatory muscles activity were assessed before surgery and followed-up 6, 12 and 24 months after surgery. Twenty-four months after surgery, all electromyographic values were normal, and soft-tissue facial asymmetry was negligible at 3D assessment. Conclusion Surface electromyography joins a set of clinical and morphological diagnostic tests that help the surgeon in planning the operation and managing the post-surgical patient

Reliability and Validity of the Italian Version of the Protocol of Orofacial Myofunctional Evaluation with Scores (I-OMES)

Objective: To evaluate the reliability, validity, and responsiveness of the Italian OMES (I-OMES). Patients and Methods: The study consisted of 3 phases: (1) internal consistency and reliability, (2) validity, and (3) responsiveness analysis. The recruited population included 27 patients with orofacial myofunctional disorders (OMD) and 174 healthy volunteers. Forty-seven subjects, 18 healthy and all recruited patients with OMD were assessed for inter-rater and test-retest reliability analysis. I-OMES and Nordic Orofacial Test \u2013 Screening (NOT-S) scores of the patients were correlated for concurrent validity analysis. I-OMES scores from 27 patients with OMD and 27 age- and gender-matched healthy subjects were compared to investigate construct validity. I-OMES scores before and after successful swallowing rehabilitation in patients were compared for responsiveness analysis. Results: Adequate internal consistency (Cronbach \u3b1 = 0.71) and strong inter-rater and test-retest reliability (intraclass coefficient correlation = 0.97 and 0.98, respectively) were found. I-OMES and NOT-S scores significantly and inversely correlated (r = \u20130.38). A statistical significance (p < 0.001) was found between the pathological group and the control group for the total I-OMES score. The mean I-OMES score improved from 90 (78\u2013102) to 99 (89\u2013103) after myofunctional rehabilitation (p < 0.001). Conclusion: The I-OMES is a reliable and valid tool to evaluate OMD