NCT04738513

One Year Clinical Evaluation of New Gradient Technology Monolithic Zirconia (5Y-TZP/3Y-TZP) Crowns in Dental Esthetic Zone With Vertical Versus Conventional Preparation Techniques

One Year Clinical Evaluation of New Gradient Technology Monolithic Zirconia (5Y-TZP/3Y-TZP) Crowns in Dental Esthetic Zone With Vertical Versus Conventional Preparation Techniques (Randomized Clinical Trial)

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: All
• Age: 21 Years – 50 Years
• Healthy volunteers: Not accepted

Summary

The aim of this study is to evaluate the clinical behavior of zirconia crowns in dental esthetic zone with vertical versus conventional preparation techniques using a new gradient technology monolithic zirconia (5Y-TZP/3Y-TZP).

Detailed description

Introduction: A good relationship between dental restorations and the periodontium is one of the most important aspects to ensure clinical success both in terms of esthetics and function. Dental preparation for fixed prostheses can take various forms classified as horizontal preparation with a defined margin (chamfer), or vertical, or without a margin/finish line. According to some clinical reports, vertical preparation technique provides an increases in the gingival thickness and a greater stability of the gingival margin. Moreover, vertical preparation is characterized by being more conservative with tooth structure. Also, taking impressions is easier since it is a finish area and not a defined line. Null hypothesis: 1. There will be no difference between vertical and conventional preparations in the clinical behavior of zirconia crowns in dental esthetic zone at baseline,3,6,9,12 months evaluation. 2. There will be no difference between vertical and conventional preparations in the patient satisfaction of zirconia crowns in dental esthetic zone at baseline,3,6,9,12 months evaluation.

Conditions

• Single Anterior Crowns
• Badly Decayed Teeth
• Endodontically Treated Teeth
• Spacing Between Anterior Teeth
• Malposed Teeth(Tilted,Overerupted,Totated,Etc.)

Interventions

Type	Name	Description
PROCEDURE	Vertical preparation technique	Teeth in dental esthetic zone will receive Monolithic Zirconia (5Y-TZP/3Y-TZP) Crowns using vertical preparation technique.
PROCEDURE	Conventional Preparation technique	Teeth in dental esthetic zone will receive Monolithic Zirconia (5Y-TZP/3Y-TZP) Crowns using conventional preparation technique.

Timeline

• Start date: 2021-03-01
• Primary completion: 2022-03-01
• Completion: 2022-07-01
• First posted: 2021-02-04
• Last updated: 2021-02-05

Locations

1 site across 1 country: Egypt