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Diabetes may fool dental tests, study warns

NCT ID NCT07369297

Knowledge-focused Sponsor: Bezmialem Vakif University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
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Not open to general applications. Only people the study team invites can take part.
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Paused for now. It may or may not start again.
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The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

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Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
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Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how diabetic polyneuropathy (nerve damage from diabetes) changes responses to common dental pulp tests like electric and cold stimuli. Researchers will compare people with mild neuropathy, severe neuropathy, and healthy controls to see if nerve damage leads to false-negative results. The goal is to help dentists make better treatment decisions for patients with diabetes.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help dentists avoid false-negative pulp tests in people with diabetes, leading to more accurate diagnoses and fewer unnecessary root canals.
What could go wrong
This is an observational study, not a treatment trial. It is small (108 participants) and has not yet started recruiting, so results are uncertain and may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 108 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

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

Study participants will be selected from adult patients attending the Departments of Neurology and Endodontics at Bezmialem Vakif University. The study population will include individuals diagnosed with type 2 diabetes mellitus with mild and severe diabetic neuropathy who have been evaluated in the Neurology Department, as well as systemically healthy control subjects. Participants will be recruited from patients referred from the Neurology Department and from individuals presenting for routine dental examination at the university dental clinic.

Ages

25 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: Ability to understand the study procedures and provide written informed consent. For diabetic polyneuropathy groups: * Diagnosis of diabetic polyneuropathy confirmed by a neurologist * Neuropathy severity (mild or severe) determined by nerve conduction studies For healthy control group: * No history of diabetes mellitus * No history of peripheral neuropathy or neurological disease Presence of at least one maxillary central incisor suitable for testing, defined as: * No previous root canal treatment * No extensive caries * No clinical or radiographic signs of periapical pathology * No periodontal disease affecting the selected tooth Exclusion Criteria: * History of chemotherapy, head and neck radiotherapy, or systemic conditions known to affect peripheral nerve function (other than diabetic polyneuropathy in the patient groups) * Presence of acute or chronic orofacial pain disorders * Use of medications within the last 24 hours that may affect sensory perception or nerve conduction (e.g., analgesics, sedatives, neuroactive drugs) * History of trauma to the maxillary central incisor or surrounding tissues * Extensive restorations, fractures, caries, or periodontal pathology involving the selected tooth * Pregnancy or breastfeeding * Inability to tolerate study procedures or refusal to continue participation at any point

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Conditions

The condition(s) this trial relates to.

diabetic neuropathy diabetic polyneuropathy

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Diabetic polyneuropathy Healthy individuals (controls)

How to take part

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  1. The official record

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