Chew on this: dental rehab may sharpen aging brains
NCT ID NCT04458207
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether restoring chewing ability through dental procedures can improve memory and thinking in adults aged 65-80. Eighty participants with chewing problems will be randomly assigned to receive dental rehabilitation either immediately or after a waiting period. Researchers will measure changes in memory tests before and after treatment to see if better chewing leads to better brain function.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Oral prosthetic rehabilitation (dental procedures including implants, dentures, and other treatments to restore chewing function)
- What this could lead to
- If it works, this could show that improving chewing ability helps maintain or improve memory and thinking in older adults, pointing toward a simple way to support brain health.
- What could go wrong
- This is a small, early-stage study (80 people) testing a cause-effect link, not a treatment for dementia. Results may not apply to everyone, and the intervention is dental care, not a drug or cure.
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.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2018
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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65 to 80 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * 65-80 years of age at start * Impaired chewing ability (Eichner index B2-B4, C1-C4) * Dental rehabilitation with fixed prosthodontics, implant and/or tooth supported (overdentures included) \>10 occluding units * Mini Mental State Examination (MMSE) score \>25 Exclusion Criteria: * Brain trauma or stroke \<6 months * Neurological disease (stroke, dementia, Alzheimer disease, Parkinson disease). * Intellectual disability * Psychological disorders * Participants with chronic pain, depression or sleeping disorders * Daily analgesic medication that may affect cognitive and/or executive performance of the brain * Poor Swedish language skills, reading disabilities * Severely reduced hearing or vision * Prosthetic treatment with removable dentures (full or partial) MRI exclusion criteria: * Claustrophobia * Difficulties in lying down in a supine position for about an hour, or any other difficulties related to the MRI head coil * Participants with metal or medical implants in the body contraindicating MRI scan
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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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Eastmaninsitutet, Department of Prosthodontics
Stockholm, 11324, Sweden
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Eastmaninstitutet Folktandvården Stockholm AB
Stockholm, Stockholm County, 11324, Sweden
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