Related Experiment Video
Updated: Mar 2, 2026
05:54
Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
Published on: October 18, 2021
2.3K
Real-time three-dimensional jaw tracking in temporomandibular disorders
D V da Cunha1,2, V V Degan2, M Vedovello Filho2
1Laboratory of Biomedical Engineering, Faculty of Electrical Engineering, Federal University of Uberlândia, Uberlândia, Brazil.
Journal of Oral Rehabilitation
|May 13, 2017
Summary
Individuals with temporomandibular disorders (TMD) exhibit greater deviations in mouth opening movements and reduced movement speed compared to asymptomatic individuals. This study analyzed mandibular movements in TMD patients with arthropathy or myopathy versus a control group.
Area of Science:
- Biomedical Engineering
- Dental Science
- Biomechanics
Background:
- Dysfunction in the stomatognathic system can lead to temporomandibular disorders (TMD).
- Understanding mandibular movement characteristics is crucial for diagnosing and managing TMD.
Purpose of the Study:
- To compare deviations, displacement, and speed of mandibular movements between individuals with TMD and asymptomatic participants.
- To differentiate movement patterns in TMD patients with arthropathy versus myopathy.
Main Methods:
- Forty participants were divided into three groups: arthropathy (GART), myopathy (GMYO), and a control group (CG).
- Mandibular movements (opening, closing, lateral excursions, protrusion) were recorded using opto-electronic devices.
- Movement trajectories were analyzed on medial-lateral (x), vertical (y), and antero-posterior (z) axes.
Main Results:
- Significant differences in maximal mouth opening/closing (OCY, OCX) and lateral deviations (OLDX, CLDX) were observed between control and TMD groups.
- Reduced movement speed was noted in TMD groups compared to the control group.
- Protrusion lateral deviation (PLDX) differed significantly between arthropathy and myopathy groups.
Conclusions:
- Individuals with TMD demonstrate increased deviation during total opening movements compared to asymptomatic individuals.
- TMD is associated with a general reduction in the speed of mandibular movements.
- Specific deviations in mandibular movements may help differentiate between TMD subtypes like arthropathy and myopathy.
