Occlusal Contact Registration Using Jaw Tracking Device Versus Articulating Paper at Different Head Positions (jaw tracking)

March 18, 2026 updated by: Hend Ahmed Soliman, Cairo University

Occlusal Contact Registration Using Jaw Tracking Device Versus Articulating Paper at Different Head Positions: A Pilot Study

this study will test the ability of the Jaw Tracking Device to detect occlusal contacts as an additional data that could be used during diagnosis and occlusion analysis and the results will be compared to contacts gotten from articulating paper and that will be tested at different head position to also detect the changes related to change in condylar position.

Study Overview

Status

Enrolling by invitation

Conditions

Intervention / Treatment

Detailed Description

Each subject will be subjected to three different head positions (upright, semi supine 45° and supine position). Positioning of the participants will be standardized as much as possible. A Goniometer (ISICO, Transparent, 360°, India) that has been used in a previous study will be used to standardize all head postures. All participants will be instructed to initially sit in a standard dental chair with the backrest and their arms resting freely at their sides, eyes looking straight. The starting position for cervical flexion will be assumed after the clinician manually adjusts the participant's neck so that the center of the external acoustic meatus to the base of the nose representing the reference plane (camper plane) is parallel to the floor. The axis will be centered over the external acoustic meatus, and the fixed arm of the goniometer will be held vertically, while the movable arm will be aligned with the reference plane . For the supine position, the participant will lay down on his back in the horizontal position with the dental chair adjusted so as to be parallel to the floor . For the semi supine position, the participant's head will be adjusted so that the movable arm of the goniometer is aligned at 45 degrees with the vertical arm that will be centered over the external acoustic meatus. The head rest will be then adjusted to support the head at this position throughout the registration procedure.

Occlusal contact registration :

At each head position, occlusal contacts will be registered using the jaw tracking device and an articulating paper. The occlusal contacts will be assessed by asking the participant to close the mouth in MIP and maintain dental contact. The number of occlusal contacts per tooth will be counted and recorded at each head position for each method then the obtained data will be compared. To determine the inter-rater reliability of the jaw tracking device and articulating paper, the contact points were classified in a dichotomy variable , meaning the presence or absence of contact per tooth, regardless of the surface amount or contact intensity. The presence of any contact, no matter the intensity or its surface, was considered as the presence of contact .

The position of the condyles will be determined using the electronic position analysis (EPA) of the jaw tracking device. The position of the condyles in the upright head position will be considered as the reference. Any change (deviation in mm) from this reference when the head position is changed to supine or semi-supine will be recorded.

Study Type

Interventional

Enrollment (Estimated)

20

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Cairo, Egypt
        • Faculty of Dentistry Cairo University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Healthy dentate subjects.
  • Between 20 and 25 years irrespective of gender.
  • No reported pain or history of pain in TMJ and neck region.
  • No sign and symptoms of myofascial pain dysfunction.
  • Class I jaw relationship with intact dentition.

Exclusion Criteria:

  • Any abnormal range of mandibular movements.
  • Any postural abnormality of cervical spine system such as scoliosis and kyphosis.
  • No history of chronic pain or pathology or previous surgery related to masticatory system or cervical spine or TMD symptoms at least 1 year before study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: jaw tracking device for occlusion diagnosis
using jaw tracking device to detect occlusal contacts at different head positions
Device: jaw tracking device
a pilot study testing the ability of jaw tracking device to accurately detect a reliable occlusal contacts that could be used for diagnosis.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
number of occlusal contacts per tooth will be counted and recorded at each head position for each method
Time Frame: Day 1
Day 1

Secondary Outcome Measures

Outcome Measure
Time Frame
changes in condylar position using the electronic position analysis (EPA) of the jaw tracking device
Time Frame: Day 1
Day 1

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cairo University

Investigators

  • Study Director: Amal Swelem, Cairo University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2025

Primary Completion (Estimated)

June 1, 2026

Study Completion (Estimated)

December 1, 2026

Study Registration Dates

First Submitted

February 26, 2026

First Submitted That Met QC Criteria

March 18, 2026

First Posted (Actual)

March 24, 2026

Study Record Updates

Last Update Posted (Actual)

March 24, 2026

Last Update Submitted That Met QC Criteria

March 18, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 121225

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

because these are personal data

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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