A post made to measure: can a custom fiber post save damaged front teeth?
NCT ID NCT07827755
First seen Sep 18, 2026 · Last updated Sep 18, 2026
Summary
Researchers at Cairo University compare two ways to rebuild root canal treated front teeth that have lost one or two side walls. Each participant receives either a custom-fit UHMWPE fiber post, shaped to their canal at the chair, or a standard prefabricated fiber post, both finished with a composite core and crown. The team measures the gap between the post and the remaining root canal filling on X-rays, then checks how well the post and crown stay in place over six months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a custom-fit UHMWPE fiber post with a composite core, compared with a prefabricated fiber post
- What this could lead to
- If the custom-fit post holds better, dentists could rebuild badly damaged front teeth with fewer replacements and retreatments.
- What could go wrong
- This is a small, short six-month study in one dental school. Fit on an X-ray may not predict how long a restoration lasts, and results may not apply to other teeth or clinics.
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 84 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 2027
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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20 to 40 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.
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: * Endodontically treated maxillary anterior teeth (incisors and/or canines) * Presence of 1-2 missing coronal axial walls (mesial, distal, labial, and/or palatal), assessed at the cementoenamel junction (CEJ) * Remaining sound tooth structure meeting minimum ferrule criteria: wall height ≥1.5-2 mm and circumferential thickness ≈1 mm * Adequate root canal filling with no radiographic signs of periapical pathology * Root length and canal morphology suitable for post space preparation * Patients aged 20-40 years * Willing and able to provide informed consent and attend follow-up visits Exclusion Criteria: * Teeth with 3 or more missing coronal axial walls (insufficient ferrule) * Evidence of active periapical pathology, root fracture, or root resorption * Insufficient remaining root length for adequate post retention * Signs of periodontal disease affecting tooth prognosis (e.g., mobility, inadequate periodontal support) * Systemic conditions contraindicating routine dental treatment * Pregnancy (if radiographic follow-up is required) * Inability to attend scheduled follow-up visits
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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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Faculty of Dentistry Cairo University
Cairo, Manial, 11553, Egypt