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Occlusal Wear Of Bioflx Crowns Compared To Zirconia Crowns On Primary Molars
Sponsor: Cairo University
Summary
The goal of this clinical trial is to evaluate the occlusal wear of Bioflx crowns compared to zirconia crowns in the restoration of primary molars. The main question\[s\] it aims to answer : " Is there a difference in the occlusal wear of BioFlx crowns compared to zirconia crowns in the restoration of primary molars?" The study will also assess the clinical performance of both types of crowns in terms of retention,gingival health, preparation time, as well as child and parental satisfaction.
Official title: Evaluation Of Occlusal Wear Of Bioflx Crowns Compared To Zirconia Crowns On Primary Molars
Key Details
Gender
All
Age Range
4 Years - 8 Years
Study Type
INTERVENTIONAL
Enrollment
50
Start Date
2025-06-15
Completion Date
2026-07-16
Last Updated
2025-03-24
Healthy Volunteers
Yes
Conditions
Interventions
(Group A: Preformed Bioflx Crown)
Crown Selection \& Tooth Preparation Measure the mesiodistal width using calipers to select an appropriately sized crown. If a mesial or distal wall is missing, use the contralateral tooth for size selection. Choose the crown that closely matches the measured mesiodistal width. Select the smallest crown that preserves proximal contacts using a trial-and-error approach. if crimping is necessary use Howe's pliers. Tooth Preparation Perform 1-1.5 mm occlusal reduction using a tapered diamond bur. Reduce proximal areas by approximately 0.5 mm to clear the contact area. Crown Placement \& Cementation Ensure a snug fit of the selected crown. Apply a thin layer of glass ionomer cement inside the crown. Seat the crown firmly using finger pressure. Have the child bite down gently to ensure proper seating. Final Adjustments \& Cleanup Remove excess cement with floss or an explorer. Verify the crown's fit, occlusion, and stability.
(Group B: Preformed Zirconia crown)
Crown Selection Measure the mesiodistal width using calipers to select the appropriate crown. If a mesial or distal wall is missing, use the contralateral tooth for size selection. Choose the crown that closely matches the measured width. Select the smallest crown that preserves proximal contacts. Tooth Preparation Reduce the occlusal surface by 1.5-2 mm using a tapered diamond bur. Reduce interproximal areas by 1-1.5 mm, ensuring a feather-edge finish. Perform a 1-2 mm subgingival preparation using a tapered fissure bur. Crown Placement \& Passive Fit Check Place the selected crown and check for passive fit. Cementation of the Crown Apply a thin layer of glass ionomer cement inside the crown. Seat the crown with passive finger pressure. Have the child bite down gently to ensure proper seating. Final Adjustments \& Cleanup Remove excess cement using floss or an explorer. Verify fit, occlusion, and stability
Locations (1)
Faculty of dentistry cairo university
Cairo ,Giza, Egypt, Egypt