Effect of botulinum toxin on chewing performance in patients with jaw disorders

Evaluation of the Chewing Performance and Nutritional Status of the Patients Diagnosed With Bruxism After Botulinum Toxin Application: Follow-up Study

Observational Marmara University · NCT05562531

This study is testing if botulinum toxin injections can improve chewing ability and nutrition in people with jaw disorders who haven't found relief from other treatments.

Quick facts

Study typeObservational
Enrollment30 (estimated)
Ages18 Years to 50 Years
SexAll
SponsorMarmara University Academic / other
Drugs / interventionschemotherapy
Locations1 site (Istanbul)
Trial IDNCT05562531 on ClinicalTrials.gov

What this trial studies

This observational study evaluates how botulinum toxin type A (BTX-A) injections impact masticatory performance and nutritional status in patients suffering from temporomandibular disorders (TMD) and bruxism. It will compare baseline and post-treatment measures of chewing ability, pain intensity, nutrition, anxiety levels, and body measurements. The study specifically targets individuals who have not responded to splint treatment for at least three months and have specific dental occlusion criteria.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 50 with diagnosed bruxism or myofascial pain who have not benefited from splint therapy.

Not a fit: Patients with a history of botulinum toxin sensitivity or those with systemic neuropathies may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve chewing ability and nutritional health for patients with TMD and bruxism.

How similar studies have performed: While the use of botulinum toxin for TMD and bruxism is explored in other studies, this specific approach focusing on masticatory performance is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Between 18 and 50 years old,
* Male or female,
* Able to communicate
* Able to read and write
* Volunteer to participate in the study,
* At least 3 months of splint treatment and no results
* Having Class 1 molar occlusion and not using removable prostheses
* Marmara University, Faculty of Medicine, Department of Oral and Maxillofacial Surgery, patients diagnosed with bruxism or myofascial pain in masticatory muscles will be included in the study.

Exclusion Criteria:

* Sensitivity to botulinum toxin,
* Have received botox treatment in the last 6 months,
* Injection site infection
* Pregnant or lactating women
* Those with diseases that may cause systemic neuropathy such as diabetes, hypertension, kidney disease,
* Those who do not want to sign the consent form,
* Patients with a history of malignancy, radiotherapy or chemotherapy will be excluded from the study.

Where this trial is running

Istanbul

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Temporomandibular DisorderBruxismBotulinum Toxins, Type AMasticationNutritional StatusChewing
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.