Evaluation of Bioflex and Zirconia Crowns Versus Stainless Steel Crowns on Primary Molars: Randomized Controlled Clinical Trial

• The goal of this clinical trial is to evaluate the clinical effectiveness of bioflex crowns and zirconia crowns compared to stainless steel crowns when * restoring primary molars 45 participant who their ages range between 6 and 8 years participated in this study. The participants will be divided into three groups: group (A) for Bioflex crown (n=15), group (B) for Zirconia crown (n=15) and group ( C) for Stainless steel crown(n=15). The periodontal health will be evaluated using gingival index and plaque index .Clinical success will be assessed according to the Modified United States Public Health Service Evaluation (USPHS) criteria regarding: crown retention ,marginal integrity, surface roughness and color change. Moreover, parental and child satisfaction will be evaluated.

NCT Number	NCT07156838
Lead Sponsor	Alexandria University
Conditions	Badly Decayed Primary Molars, Preformed Pediatric Posterior Crowns
Enrollment	45 participants
Start Date	2025-02-10
Primary Completion	2025-12-17 (estimated)
Study Completion	2025-12-17 (estimated)
Updated on ClinicalTrials.gov	2026-02-13