The Effect of Peripheral Neuropathy Symptoms on Temporomandibular Joint Functionality

January 2, 2024 updated by: Hazel Çelik Güzel, Bandırma Onyedi Eylül University

The Effect of Diabetic Peripheral Neuropathy Symptoms on Temporomandibular Joint Functionality in Patients With Type 2 Diabetes

The aim of this observational case-control study was to investigate the effect of diabetic peripheral neuropathy symptoms on temporomandibular joint functionality in patients with type 2 diabetes.

Study Overview

Detailed Description

The number of participants planned to be included in the study was decided with the G-Power programme. While calculating the number of individuals to be included in the study, it was calculated that the sample size to obtain an effect size of 0.6 for the purpose of evaluation within the 95% confidence interval in a way to provide 80% study power at 5% Type 1 and 20% Type 2 error limits should be 74 (n=37) individuals. This study included 70 individuals (DM study group=40 individuals, control group=30 individuals).

Peripheral neuropathy symptoms of all participants were evaluated with the Michigan Neuropathy Screening Test. In the evaluation of TMJ functionality, the presence of pain, maximum pain-free mouth opening, mandibular dysfunction and dysfunction were assessed with the help of scales. Duration of diabetes mellitus was recorded and quality of life was evaluated with Ferran Powers Quality of Life Index.

Study Type

Observational

Enrollment (Actual)

70

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

    • Bandirma
      • Balıkesir, Bandirma, Turkey
        • Bandirma Onyedi Eylül 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
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

The study group included individuals aged between 48-78 (min-max) years who were diagnosed with type 2 DM in the treatment units of Harran University Training and Research Hospital, while the control group included age and gender homogeneous healthy individuals without a diagnosis of DM.

Description

Inclusion Criteria:

  • Individuals diagnosed with type 2 DM

Exclusion Criteria:

  • Having diabetic foot ulcer,
  • Mini Mental Test score below 24,
  • History of psychiatric illness, cancer, neurological problems, congenital anomalies, musculoskeletal problems, systemic disease, facial paralysis, surgical operation related to spine, abdomen and/or TMJ problem
  • Receiving any treatment related to spine and TMJ in less than 6 months

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Diabetes Mellitus
The study group included individuals aged 48-78 (min-max) years, diagnosed with type 2 DM in the treatment units of Harran University Training and Research Hospital.
A two-step test consisting of symptom questionnaire and physical examination was used. The symptom questionnaire includes 15 questions about the legs and feet. Physical examination includes assessment of the appearance of the feet, Achilles reflex, thumb vibration and monofilament tests.
In this simple method, which is frequently used to measure pain intensity in the clinic and whose validity and reliability have been demonstrated, the participant is asked to mark a number on a 10 cm scale with numbers ranging from "0" (no pain) to "10" (unbearable pain) for the pain.
This valid and reliable scale evaluating mandibular dysfunction consists of two dimensions and 17 questions.A high total score obtained from the questionnaire indicates a high level of impairment in jaw function
This scale, which is valid and reliable as a TMJ disorder assessment tool, includes 10 questions. The presence of TMD is accepted in those with a score of 25.
This index consists of two parts and a total of 68 items. A high score indicates a good quality of life.
Healthy
Age and sex homogenous healthy individuals without a diagnosis of DM were included in the control group
A two-step test consisting of symptom questionnaire and physical examination was used. The symptom questionnaire includes 15 questions about the legs and feet. Physical examination includes assessment of the appearance of the feet, Achilles reflex, thumb vibration and monofilament tests.
In this simple method, which is frequently used to measure pain intensity in the clinic and whose validity and reliability have been demonstrated, the participant is asked to mark a number on a 10 cm scale with numbers ranging from "0" (no pain) to "10" (unbearable pain) for the pain.
This valid and reliable scale evaluating mandibular dysfunction consists of two dimensions and 17 questions.A high total score obtained from the questionnaire indicates a high level of impairment in jaw function
This scale, which is valid and reliable as a TMJ disorder assessment tool, includes 10 questions. The presence of TMD is accepted in those with a score of 25.
This index consists of two parts and a total of 68 items. A high score indicates a good quality of life.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Maximum pain-free mouth opening
Time Frame: May 2023- November 2023
The maximum pain-free mouth opening was recorded using a 15 cm ruler
May 2023- November 2023
Mandibular Function Disorder Questionnaire
Time Frame: May 2023- November 2023
This scale evaluating mandibular dysfunction consists of two dimensions and 17 questions.A high total score obtained from the questionnaire indicates a high level of impairment in jaw function.
May 2023- November 2023
Ferrans&Powers Quality of Life Index Diabetes Version
Time Frame: May 2023- November 2023
The Quality of Life Assessment Index consists of two parts and a total of 68 items. A high score indicates a good quality of life
May 2023- November 2023
Michigan Neuropathy Screening Instrument
Time Frame: May 2023- November 2023

The symptom questionnaire includes 15 questions about the legs and feet. Physical examination includes assessment of the appearance of the feet, Achilles reflex, thumb vibration and monofilament tests.

High score indicates increased neuropathy

May 2023- November 2023
Numeric Pain Scale
Time Frame: May 2023- November 2023
The participant is asked to mark a number on a 10 cm scale, on which numbers are shown in the range of "0" (no pain) to "10" (unbearable pain) for the pain. High score indicates increased pain
May 2023- November 2023
Fonseca Anamnestic Index
Time Frame: May 2023- November 2023
This scale includes 10 questions. The presence of TMD is accepted in those with a score of 25. High score indicates increased dysfunction.
May 2023- November 2023

Collaborators and Investigators

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

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)

May 1, 2023

Primary Completion (Actual)

November 1, 2023

Study Completion (Actual)

November 15, 2023

Study Registration Dates

First Submitted

December 18, 2023

First Submitted That Met QC Criteria

December 18, 2023

First Posted (Actual)

January 3, 2024

Study Record Updates

Last Update Posted (Actual)

January 5, 2024

Last Update Submitted That Met QC Criteria

January 2, 2024

Last Verified

January 1, 2024

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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