Could spit reveal the stress behind teeth grinding?
NCT ID NCT07702019
First seen Jul 14, 2026 · Last updated Jul 15, 2026 · Updated 1 time
Summary
This observational study looks at whether people with bruxism (teeth grinding or clenching) have different levels of certain substances in their saliva, such as cortisol and immune markers, compared to healthy individuals. It also examines if these biological markers are linked to how much stress a person feels. Participants provide a saliva sample and fill out a stress questionnaire, helping researchers understand the connection between stress and bruxism.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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56 people
The number who actually took part.
- Started
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May 2025
- Finished
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Jun 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study population consisted of adults with clinically diagnosed bruxism and age- and sex-matched healthy control participants recruited from the Faculty of Dentistry. All participants underwent clinical examination, completed the Perceived Stress Scale (PSS-14), and provided unstimulated saliva samples for biomarker analysis.
- Ages
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25 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adults aged 25 to 50 years. * Systemically healthy individuals. * Presence of no more than four-unit fixed partial dentures. * Absence of clinical signs of oral inflammation. * Good oral hygiene. * Individuals diagnosed with bruxism according to the study diagnostic criteria (bruxism group) or healthy volunteers without signs or symptoms of bruxism (control group). * Ability and willingness to provide written informed consent. Exclusion Criteria: * Use of medications that may affect the nervous system or salivary gland function (e.g., benzodiazepines, antidepressants). * Psychiatric disorders. * Epilepsy. * Diabetes mellitus or other pancreatic diseases. * Current corticosteroid therapy. * Cushing syndrome or Addison disease. * Pregnancy. * Current smoking. * Alcohol or substance abuse. * History of facial trauma. * Rheumatic muscle or joint disorders. * Degenerative joint disease. * Migraine. * Use of medications affecting sleep or motor activity. * Recent history of occlusal splint therapy. * Salivary gland disorders, including Sjögren syndrome or autoimmune sialadenitis.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Giresun University Faculty of Dentistry
Giresun, 28200, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.
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