Gum graft surgery: does the bed matter for thin gums?
NCT ID NCT05684068
First seen Sep 09, 2026 · Last updated Sep 10, 2026 · Updated 1 time
Summary
Researchers at the University of Iowa are studying people with thin gum tissue who need a gum graft to cover exposed tooth roots. The trial compares two ways of preparing the gum bed before placing a graft: removing all tissue down to the bone, or leaving a thin layer of tissue over the bone. Fifty adults will be randomly assigned to one of the two methods, and researchers will track gum thickness and other outcomes over 12 months to see whether one approach works better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- A gum graft taken from the patient's own mouth and placed on two different prepared gum beds
- What this could lead to
- If one bed preparation works better, dentists could use it to help gum grafts hold their thickness and protect exposed tooth roots in people with thin gums.
- What could go wrong
- This is a small, single-center study of 50 people, so the results may not apply to everyone. Gum graft surgery carries risks of bleeding, infection, graft failure, and discomfort at the donor site.
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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 50 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2028
An estimate. Start dates often move.
- Expected to finish
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Mar 2031
An estimate. End dates often move.
- 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.
- Ages
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18 to 95 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: * Patients 18-95 years of age * Inactive periodontal disease * Lack of, or an insufficient (less than 2 millimeters) band of keratinized tissue width on the buccal site (closest to the cheek) * Shallow vestibule depth (the space between the soft tissue (lips and cheeks), and the teeth and gums) * Thin gingival phenotype (less than 1.5mm of gum tissue depth). * Aberrant frenum attachment in need of free-epithelized gingival grafts. * At least one RT1, 2, or 3 (Cairo's classification) gingival recession defect on the mandibular anterior sextant (Teeth #22-27). * Non-smokers or past smokers (those who have stopped at minimum 6 months ago). * Patient willing and able to follow instruction related to the study procedures. Exclusion Criteria: * Previous soft tissue augmentation procedures at the area of interest. * Current smokers (Light smokers meaning less than 10 cigarettes/day, heavy smokers meaning more than 10 cigarettes/day, or social smokers) * Uncontrolled systemic disease (uncontrolled diabetes defined by blood sugar HbA1c greater than 7%) * Any active local or systemic infections * Any diseases or medications that may compromise normal wound healing * Currently receiving chemotherapy or radiotherapy or a history of radiotherapy in head and neck area. * Severe hematologic (blood) disorders * Pregnancy or nursing mother * Patients undergoing orthodontic therapy * Patients taking antibiotics in the past 3 months
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Iowa College of Dentistry and Dental Clinics
Iowa City, Iowa, 52242, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Boosting gum grafts: do blood or gel Add-Ons reduce shrinkage?
- Can a new flap technique better cover receding gums?
- A new twist on gum surgery could better cover exposed roots
- Gum graft boost: growth factors may strengthen receding gum repair
- Micro-needling vs. gum graft: a tiny trial tests a simpler fix for receding gums
- Can a strip of your own gum plus donor tissue rebuild healthier gums?