Completed

NCT Number: NCT03571035

The Vision System for Mandibular Trajectory Assessment in Women With Mild Temporomandibular Joint Disorder

Recording mandibular movements plays an important role in stomatognathic system diagnosis and has been the subject of numerous research projects. This study presents theoretical assumptions and a practical solution in the form of a novel method of mandibular motion assessment.

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Key information

Conditions

Mandibular Deviation

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

About this study

In the presented method, mandibular movements are recorded by a mono vision system where a digital camera is fixed on a special extension arm attached to patient's head. During movement the camera records changing positions of two markers placed on two selected two points on a patient's face. With such data, it possible to assess the absolute range of mandibular abduction as well as displacements from optimal trajectory occurring during movement, which indicative of stomatognathic dysfunctions.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

temporomandibular joint disorder
qualitative and quantitative impairments of mandibular movements

Exclusion criteria

no impairments of mandibular movements

Treatment and study plan

Mandibular movements recordings by a mono vision system

Diagnostic Test

To examine the mandible's movements, vision analysis was employed and performed with the digital camera which featured 1920 x 1080 resolution and was fixed on an aluminium extension arm attached to a headset worn by the subject.The camera was aligned parallel to the subject's face at a distance of 0.3 meters. The study used two 10 mm x 5 mm reference markers, which were accurately reproduced on the camera recorded images. In line, one marker was put on the medial cleft above the upper lip, and the other one was positioned below the first one in a straight line, in the middle of the chin. Then, the patient was asked to open maximally and close the mouth twice.To establish the mandible's trajectory, the line was drawn between the positions of the two markers to connect the two points. The line's parameters were calculated only during initial measurements and were constant throughout the study.

Primary outcomes

Range of mandibular abduction [mm]

Time frame: about 2 minutes

The maximum mouth opening value calculated as the difference in the distance between the markers before registration and during the maximum opening.
Maximum displacement in frontal plane [mm]

Time frame: about 2 minutes

The value of the maximum deviation of the lower marker in relation to the upper one in the frontal plane.
Normalized displacement in frontal plane [mm^2/s]

Time frame: about 2 minutes

The value of normalized displacement calculated by dividing the sum of squared errors in movement trajectory on the transverse axis by the number of measurements taken during analysis time.

Sponsors and collaborators

Lead sponsor

Poznan University of Medical Sciences

Other

Registry information

Official study title

Presentation of Light and Affordable Vision System for Mandibular Trajectory Assessment in Women With Mild Temporomandibular Joint Disorder

Acronym: UMP14/06

Important dates

Study start: 2015
Primary completion: 2017
Study completion: 2017
First posted: Jun 27, 2018
Registry last updated: Apr 4, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.