Validation and Cultural Adaptation of Jaw Functional Limitation Scale-20

August 26, 2026 updated by: Elena Arnaoutoglou, University of Thessaly

Alidation and Cultural Adaptation of Jaw Functional Limitation Scale-20 in Greek Population

Temporomandibular joint (TMJ) disorder (TMD) is common. Jaw Functional Limitation Scale-20 (JFLS) is a validated tool for the evaluation of patients suffering from TMD

Study Overview

Status

Completed

Conditions

Temporomandibular Joint Disorder

Study Type

Observational

Enrollment (Actual)

200

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

Greece
- Thessaly
  - Larissa, Thessaly, Greece, 41110
    - Larissa University Hospital

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
Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Patients treated for temporomandibular joint disorders in UHL

Description

Inclusion Criteria:

adult patient >18 years old
native speakers of the Greek language
willing to participate

Exclusion Criteria:

any diagnosed neurocognitive dysfunction
any diagnosed systematic disease that forbids the participation in the 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

Number of groups / cohorts

Cohorts and Interventions

Group / Cohort
Patients suffering from temporomandibular joint disorder each patient will complete the translated in the greek language JFLS-20 and the 14-item Oral Health Impact Profile (OHIP-14) twice

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Jaw Functional Limitation Scale-20 Time Frame: "From enrollment (baseline) to the end of assessment at 1 week"	Patients suffering from TMJD will be assessed with the JFLS-20 for the validation and cultural adaptation of the JFLS-20 for the assessment of jaw functional limitation	"From enrollment (baseline) to the end of assessment at 1 week"

Collaborators and Investigators

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

Sponsor

University of Thessaly

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)

November 1, 2025

Primary Completion (Actual)

August 1, 2026

Study Completion (Actual)

August 17, 2026

Study Registration Dates

First Submitted

May 3, 2026

First Submitted That Met QC Criteria

August 26, 2026

First Posted (Actual)

August 27, 2026

Study Record Updates

Last Update Posted (Actual)