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RecruitingNCT06677983Updated Nov 7, 2024

Clinical Performance and Acceptance of Bioflx Crowns

An interventional study of Bioflex Crowns and Stainless steel crown in Caries, sponsored by Hams Hamed Abdelrahman. Recruiting at 1 site in Egypt. Open to participants aged 4 Years to 8 Years. Per ClinicalTrials.gov, last updated 2024-11-07.

Sponsored by Hams Hamed Abdelrahman · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by May 2025, 1 year 6 months ago, but the record still lists the study as recruiting.
  • Registered 9 months after the study started (first participant enrolled Feb 2024, registered Nov 2024).
  • Started Feb 2024; still recruiting 2 years 9 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
62
Allocation
Randomized
Ages
4 Years to 8 Years
Sex
All
01

Study summary

Treating pediatric patients with early childhood caries can be challenging. For clinicians, managing a young child while ensuring high-quality treatment is difficult. It is essential to have the best equipment and materials available. Today, aesthetics are crucial in managing decayed teeth, with zirconia crowns often preferred for their visual appeal, although they require substantial preparation. The newly developed Bioflx crown, combining stainless steel and zirconia properties, offers an alternative solution.

02

Conditions studied

  • Caries
03

In context

Lead sponsor

Hams Hamed Abdelrahman is the lead sponsor of 111 studies on the registry; 9 are open to participants now.

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

04

Who can participate

Ages eligible
4 Years to 8 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

  • A child with primary molars is indicated for full coverage.

Exclusion criteria

Exclusion Criteria:

  • Children with any systemic disease
  • Clinical or radiographic signs/symptoms of irreversible pulpitis as abscess, fistula, spontaneous pain, mobility, furcation involvement, internal or external root resorption
  • Children cooperation (1,2) according to Frankl scale
  • Parents are unwilling to enroll their children in study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
62 participants (estimated)

Study arms

  • Experimental
    Bioflex

    Other: Bioflex Crowns

  • Active comparator
    SSC

    Other: Stainless steel crown

Interventions

  • OtherBioflex Crowns

    A preformed crown of similar size will be selected. Tooth preparation will be done using a tapered diamond bur to reduce the occlusal surface, including the central groove, by 1-1.5 mm. The proximal surfaces will be prepared by approximately 0.5 mm to clear the contact area.

  • OtherStainless steel crown

    An appropriately sized preformed stainless-steel crown will be selected. Tooth preparation will involve using a tapered bur ) to reduce the occlusal surface by 1 to 1.5 mm, with interproximal reduction made on the mesial and distal sides. The selected crown size will be checked, and a trial fit will be conducted prior to cementation. Crimping pliers will be used, and the crown will be cemented with Type 1 glass ionomer cement. Any excess cement will be removed, and proper occlusion will be verified.

06

What researchers measure

Primary outcomes

  1. Change in clinical success

    The crowns were evaluated clinically according to the following criteria: 1. Length: the margin is at the gingival crest or is extended to the cemento-enamel junction. 2. Position: crown is not rotated. 3. Polish: no scratches or roughness. 4. Cement: no excess cement remains in the sulcus. If all criteria fulfilled the crown is considered acceptable clinically, if not it is considered unacceptable.

    Time frame: baseline, 6 months, and 12 months

  2. parental satisfaction

    The questionnaire for assessing parental satisfaction includes four main categories for rating the aesthetic characteristics: size, shape, color, and stain. Responses will be recorded on a five-point Likert scale, ranging from 1 (not at all satisfied) to 5 (very satisfied).

    Time frame: through study completion, an average of 6 months

07

Study locations

1 of 1 sites recruiting
  • Outpatient Clinic of Pediatric dentistry, Faculty of dentistry, pharos University, Egypt
    Alexandria, Egypt
    Recruiting
    • Pharos univeristy · Contact3877700
    • Rabab K ElGhandour, PhD · Principal investigator
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Feb 2024 (actual). Primary completion is estimated for May 2025, 15 months after the start.

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

Registered
Nov 5, 2024
First posted
Nov 7, 2024
StartActual
Feb 1, 2024
Primary completionEst.
May 1, 2025
CompletionEst.
Jul 1, 2025
Last update
Nov 7, 2024
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 Nov 7, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06677983
Responsible party
Hams Hamed Abdelrahman (Assistant Lecturer of Dental Public Health and biostatistical consultanat, Alexandria University) — Sponsor-investigator
First posted
Nov 7, 2024
Start date
Feb 1, 2024
Primary completion
May 1, 2025 (estimated)
Completion
Jul 1, 2025 (estimated)
Last update
Nov 7, 2024

Study contacts

Rabab K ElGhandour, PhD
Contact
rabab.elghandour@pua.edu.eg
01222469150

Oversight

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

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