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

Not Applicable

Completed

• Conditions: Mandibular Deviation
• Interventions: Diagnostic Test: Mandibular movements recordings by a mono vision system

• Registration Number: NCT03571035
• Lead Sponsor: Poznan University of Medical Sciences

Brief Summary

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.

Detailed Description

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.

Study Timeline

• Study Start: 2015-01-01
• Primary Completion: 2017-07-15
• Study Completion: 2017-12-10
• Study First Submitted: 2018-06-17
• Study First Submitted QC: 2018-06-26
• Study First Posted: 2018-06-27
• Status Verified: 2023-04
• Last Update Submitted: 2023-04-01
• Last Update Posted: 2023-04-04

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 50

Inclusion Criteria

• temporomandibular joint disorder
• qualitative and quantitative impairments of mandibular movements

Exclusion Criteria

• no impairments of mandibular movements

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Example	Mandibular movements recordings by a mono vision system	Mandibular movements recordings by a mono vision system.

Primary Outcome Measures

Name	Time	Method
Normalized displacement in frontal plane [mm^2/s]	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.
Range of mandibular abduction [mm]	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]	about 2 minutes	The value of the maximum deviation of the lower marker in relation to the upper one in the frontal plane.