Masseter Muscle Stiffness After Heat Application and Percussion Therapy

Recruiting now · Not applicable

Conditions studied: Healthy Participants

In brief

The purpose of this study is to evaluate the changes in the stiffness of the masseter muscle (a jaw muscle) before and after two types of treatment: applying commercial heat pads or using a commercial massage gun. We will measure the muscle stiffness on the surface of the muscle using a special ultrasound probe, with a method called shear wave elastography. When this muscle is too stiff, it's often linked to jaw pain and problems with the jaw joint - a condition known as Temporomandibular Disorder (TMD). The goal is to find better treatment options for people with TMD and to collect data using this imaging technique.

Key facts

Study ID

NCT07237087

Run by

University of Zurich

People needed

40

Starts

2025-11-15

Expected to finish

2026-03-31

Last updated by the study team

2025-11-19

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Willingness to participate to the study
• Signed written informed consent

You may not qualify if…

• Inability to follow procedures or insufficient knowledge of project language, inability to give consent
• a history of drug ingestion within the past week (e.g. pain relievers, muscle relaxants, botox and anti-inflammatory drugs)
• systemic diseases
• Contraindications listed on the massage-gun instruction manual systemic and related to the use on the masseter area.

Where it is running

• Zentrum für Zahnmedizin — Zurich, Canton of Zurich, Switzerland (enrolling)

Full record on ClinicalTrials.gov

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