Determination of Mandibular Position and Mouth Opening in Healthy Patients and Patients with Articular and/or Muscular Pathology: A Pilot Study with 3D Electromagnetic Articulography and Surface Electromyography

Abstract

Temporomandibular disorders (TMDs) are a group of pathologies that affect the temporomandibular joint and its related structures, producing intracapsular and muscular pathologies. The aim of this study is to describe, by electromagnetic articulography (EMA) and simultaneous electromyography (sEMG), the mandibular postural position and mouth opening in healthy patients and with articular and/or muscular pathology. Materials and methods: A pilot study was conducted with a sample of sixteen participants aged 18 years or older who attended the TMDs and Orofacial Pain Polyclinic of the University of La Frontera due to TMDs. The physiological inoculation space was evaluated from the mandibular postural position (MPP) with swallowing command and without command, in both healthy patients and patients with articular, muscular, and mixed TMDs, measured simultaneously with EMA and sEMG. An angular measurement of the oral opening was also performed with the data obtained. Results: The physiological inoculation space was obtained from the determination of the MPP through the procedures with swallowing command and without command, and different mouth opening degrees were evaluated. Conclusions: Simultaneous position and sEMG records can be produced from EMA, and different characterization variables such as the vertical distance, Euclidean distance, and angle can be obtained.

Features and networks of the mandible on computed tomography

“…Temporomandibular disorders (TMDs) are a group of pathologies that cause pain and dysfunction around the temporomandibular joint and muscles regulating the jaw movement, particularly when chewing. A study aimed to describe the mandibular postural position and mouth opening in healthy subjects and patients with articular/muscular pathology for discovering novel characteristics of TMDs [ 7 ], such study has highlighted the importance for extracting useful information from the mandible. On a more dental aspect, a study [ 8 ] tried to determine the normal size of the mandible and investigated difference between the dental arch length and total teeth size space.…”

Features and Networks of the Mandible on Computed Tomography

“…Temporomandibular disorders (TMDs) are a group of pathologies that cause pain and dysfunction around the temporomandibular joint and muscles regulating the jaw movement, particularly is the author/funder, who has granted medRxiv a license to display the preprint in (which was not certified by peer review) when chewing. A study aimed to describe the mandibular postural position and mouth opening in healthy subjects and patients with articular/muscular pathology for discovering novel characteristics of TMDs [7], such study has highlighted the importance for extracting useful information from the mandible. On a more dental aspect, a study [8] tried to determine the normal size of the mandible and investigated difference between the dental arch length and total teeth size space.…”