Accuracy evaluation of recording maxillomandibular relation with the mandibular kinesiography

doi:10.19439/j.sjos.2023.05.009

Abstract

Abstract: PURPOSE: To evaluate the accuracy of recording maxillomandibular position relationship with the mandibular kinesiography by surface electromyography analysis of the masticatory muscles and MRI of temporomandibular joint (TMJ). METHODS: Eight edentulous patients were selected randomly, and the maxillomandibular position relationship was determined by mandibular kinesiography and traditional method respectively. Then the corresponding bite plates were made to wear. Surface electromyography test of left and right anterior temporal and masseter muscle and magnetic resonance scan of the temporomandibular joint were performed on closed mouth position to record peak potentials, calculate asymmetric indexes, analyze the position relationship between the joint disc and the condyle, measure TMJ joint space. SPSS 18.0 software package was used for data analysis. RESULTS: There was no significant difference in the amplitude of the anterior temporal or masseter muscle, the asymmetry index of total, asymmetry index of masseter, asymmetry index of temporalis, the anterior, upper and posterior spaces of TMJ between the mandibular kinesiography group and the traditional group (P>0.05). The temporomandibular articular disc process relationship of the two groups were conformed to the normal physiological position relationship. CONCLUSIONS: Mandibular kinesiography could accurately record the maxillomandibular position relationship in patients with edentulous jaws.

Key words: Mandibular kinesiography, Edentulous jaw, Recording maxillomandibular relation, Surface electromyography of the masticatory muscles, Magnetic resonance, Temporomandibular joint

CLC Number:

R783

SHE Wen-jun, XIE Jun-liang, JIAO Ting. Accuracy evaluation of recording maxillomandibular relation with the mandibular kinesiography[J]. Shanghai Journal of Stomatology, 2023, 32(5): 497-500.

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