NCT04729569

Gingival Response and Marginal Adaptation of Zirconia Crowns With Two Subgingival Margin Designs

Gingival Response and Marginal Adaptation of Zirconia Crowns With Two Subgingival Margin Designs: A Randomized Clinical Trial

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: All
• Age: 18 Years – 50 Years
• Healthy volunteers: Accepted

Summary

The aim of the study is to evaluate the effect of feather edge finish line and deep chamfer finish line on gingival position, bleeding on probing and marginal adaptation.

Detailed description

The aim of the study is to evaluate the effect of feather edge finish line and deep chamfer finish line on gingival position, bleeding on probing and marginal adaptation. Gingival bleeding on probing will be evaluated before treatment. Preparation for all ceramic full coverage restoration will be performed according to manufacturer instructions by one operator. Type of finish line (whether feather edge or deep chamfer finish line) will be selected randomly according to a computer generated randomization list. Restorative margins will be placed subgingivally. Zirconia crowns will be fabricated for the prepared teeth and cemented using resin luting agent. At 6 months and 12 months after the cementation, restorative margin position relative to the gingival margin will be recorded. Bleeding on probing and marginal adaptation will also be recorded.

Conditions

• Gingival Recession, Localized

Interventions

Type	Name	Description
PROCEDURE	Feather edge finish line preparation	Tooth preparation with feather edge finish line will be done to posterior teeth to receive all ceramic full coverage zirconia crowns.
PROCEDURE	Deep chamfer finish line preparation	Tooth preparation with deep chamfer finish line will be done to posterior teeth to receive all ceramic full coverage zirconia crowns.

Timeline

• Start date: 2021-11-01
• Primary completion: 2022-11-01
• Completion: 2022-12-01
• First posted: 2021-01-28
• Last updated: 2021-07-28