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A Clinical Trial of Two Types of Aesthetics Crowns for Primary Molars

A Prospective Randomized Clinical Trial of Two Types of Aesthetics Crowns Used in Restoration of Carious Primary Molars

Status
Enrolling by invitation
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06973616
Enrollment
85
Registered
2025-05-15
Start date
2024-01-02
Completion date
2026-12-30
Last updated
2025-05-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Success Rate

Keywords

Randomized clinical trial, Esthetic crowns, Zirconia crown, Bioflx crown, Primary molars, Deciduous molars

Brief summary

Currently, prefabricated zirconia crowns have been used as an aesthetic restorative material for primary teeth for a few years. Another recently introduced esthetic crown is the Bioflx™ crown. It is made of a resin polymer and claimed to have high strength , flexibility and durability. The aim of this study is to evaluate and compare the clinical and radiographic success of zirconia crowns to that of Bioflx™ crowns in carious primary molars.

Detailed description

Background: Little is known about aesthetic management of decayed primary posterior teeth in children which often requires full-coverage restorations. Aim: The aim of this study is to evaluate and compare the clinical and radiographic success of zirconia crowns to that of Bioflx™ crowns in carious primary molars. Methods: this study design is a split mouth randomized controlled clinical trial including children ages between 4-10 years old. Each patient will receive a zirconia crown and Bioflx™ crown on either side of the maxillary or mandibular arch. Clinical procedure: The patients will be randomly allocated to receive either crown on the first visit, and the other type on the next visit which will be 1-2 weeks after. Children and teeth meeting the inclusion criteria will be included. Crowns will be prepared under local anesthesia and rubber dam isolation. Crowns will be evaluated at 1, 6, 12 and 24-month recall appointments according to pre-set success and failure criteria.

Interventions

A zirconia esthetic crown will be randomly placed on one side of the jaw

PROCEDUREBioflx crown

A Bioflx esthetic crown will be randomly placed on one side of the jaw

Sponsors

Jordan University of Science and Technology
CollaboratorOTHER
King Abdullah University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Intervention model description

A split mouth randomized clinical trial

Eligibility

Sex/Gender
ALL
Age
4 Years to 10 Years
Healthy volunteers
Yes

Inclusion criteria

* Ages 4-10 years * Healthy child * Child is cooperative * Subject has a minimum of two bilateral carious upper or lower primary molars * Teeth exhibiting carious lesions clinically and radiographically * Teeth selected should be fully erupted, with no evidence of tooth fracture, and could be isolated adequately for crown cementation

Exclusion criteria

* Tooth close to exfoliation * Medical problems in sbjects * Children requiring advanced behaviour management * Those not available for future recalls/ follow up

Design outcomes

Primary

MeasureTime frameDescription
Clinically susccessful24 monthsNormal gingiva (no inflammation or edema) Normal occlusion (not high in occlusion) Parent satisfied (as reported) Child satisfied (as reported)

Countries

Jordan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026