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Not yet recruitingNCT07682623Updated Jul 6, 2026

Rigid Versus Non-Rigid Digitally Fabricated Telescopic Double Crown Prosthesis

An interventional study of Rigid telescopic double crown prosthesis and Non-rigid telescopic double crown prosthesis in Tooth Loss and Rehabilitation With Telescopic Crown Prostheses, sponsored by Mansoura University. Not yet recruiting. Open to participants aged 50 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-07-06.

Sponsored by Mansoura University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Randomized
Ages
50 Years to 65 Years
Sex
All
01

Study summary

This study aims to compare the clinical and patient satisfaction outcomes of rigid versus non-rigid digitally fabricated telescopic double crown prostheses supported by teeth and implants. The study evaluates the effect of different attachment designs on prosthetic performance and patient satisfaction."

02

Conditions studied

  • Tooth Loss and Rehabilitation With Telescopic Crown Prostheses

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03

In context

Tooth Loss

165 studies on the registry are indexed under Tooth Loss; 44 are open to participants now.

This study's planned enrollment of 10 is below the median of 30 across 120 interventional studies indexed under Tooth Loss.

Browse Tooth Loss studies →

Lead sponsor

Mansoura University is the lead sponsor of 1,119 studies on the registry; 183 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Patients requiring telescopic overdenture prosthesis.

Exclusion criteria

Exclusion Criteria:

Patients with systemic conditions affecting periodontal or prosthetic treatment.

Patients unable to attend follow-up visits

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05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    Rigid telescopic double crown prosthesis

    Participants receiving rigid digitally fabricated telescopic double crown prostheses.

    Device: Rigid telescopic double crown prosthesis

  • Active comparator
    Non-rigid telescopic double crown prosthesis

    Participants receiving non-rigid digitally fabricated telescopic double crown prostheses.

    Device: Non-rigid telescopic double crown prosthesis

Interventions

  • DeviceRigid telescopic double crown prosthesis

    Digitally fabricated rigid telescopic double crown prosthesis

  • DeviceNon-rigid telescopic double crown prosthesis

    Digitally fabricated non-rigid telescopic double crown prosthesis

06

What researchers measure

Primary outcomes

  1. Soft tissue health

    Evaluation of peri-abutment soft tissue health in patients receiving rigid and non-rigid digitally fabricated telescopic double crown prostheses.

    Time frame: Immediately after insertion, 3 months, and 6 months after prosthesis insertion

Secondary outcomes

  1. Patient satisfaction

    Assessment of patient satisfaction with rigid and non-rigid digitally fabricated telescopic double crown prostheses.

    Time frame: Immediately after insertion, 3 months, and 6 months after prosthesis insertion

07

Study locations

No study locations are listed for this record.

08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Dec 2026; primary completion for Jan 2027, 0 months later.

Of 71 non-industry interventional studies with no phase under Tooth Loss, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 48. This study's planned 0 months is below that.

Counting every sponsor, half of 77 studies reached it within 28 months; a quarter within 12 and three quarters within 48.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 28, 2026
First posted
Jul 6, 2026
StartEst.
Dec 22, 2026
Primary completionEst.
Jan 20, 2027
CompletionEst.
May 14, 2027
Last update
Jul 6, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 6, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07682623
Responsible party
naglaa samir (Demonstrator, Mansoura University) — Principal investigator
First posted
Jul 6, 2026
Start date
Dec 22, 2026 (estimated)
Primary completion
Jan 20, 2027 (estimated)
Completion
May 14, 2027 (estimated)
Last update
Jul 6, 2026

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.

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