Wear Behavior of Milled Posterior Crowns Fabricated From the New Monolithic Zirconia 5Y-TZP/3Y-TZP Compared to Lithium Disilicate

Endodontically Treated Teeth Clinical Trial

Official title:

Wear Behavior of Milled Posterior Crowns Fabricated From the New Gradient Technology Monolithic Zirconia 5Y-TZP/3Y-TZP Compared to Lithium Disilicate: (Randomized Clinical Trial)

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04805281
• Other study ID #: 201020
• Status: Recruiting
• Phase: N/A
• Start date: August 1, 2021
• Est. completion date: June 1, 2022

Study information

• Verified date: June 2021
• Source: Cairo University
• Contact: Noran El Sharkawi, MSc
• Phone: 01006365953
• Email: noran.elsharqawy[@]dentistry.cu.edu.eg
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

In-vitro studies do not represent the actual masticatory environment and cannot simulate the intricate chewing pattern. Hence, there is a need for an in vivo study evaluating the wear potential of the newly introduced strength - color gradient multilayered zirconia IPS e.max ZirCAD Prime (5Y-TZP/3Y-TZP) and compare it to Lithium Disilicate IPS e.max CAD which has proven to have favorable wear patterns.

Description:

• There will be no difference in wear caused by monolithic Zirconia (5Y-TZP/3Y-TZP) IPS E-max ZirCad Prime and Lithium Disilicate IPS e.max CAD to the antagonist.

• There will be no difference in the wear of the new monolithic zirconia IPS e.max ZirCAD Prime and lithium disilicate IPS e.max CAD.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 24
• Est. completion date: June 1, 2022
• Est. primary completion date: March 1, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 21 Years to 50 Years

Eligibility

Inclusion Criteria:

• All subjects are required to:

1- Be aged 21-50 years old, be able to read and sign the informed consent document. 2- Psychologically and physically able to withstand conventional dental procedures.

3- Patients with mutilated posterior teeth indicated for full coverage restorations.

4- Patients with sound natural antagonists. 5- Able to attend punctually for preplanned visits and evaluation. 6- Have no active periodontal or pulpal diseases.

7- There should be no apparent loss or wear in opposing enamel.

Exclusion Criteria:

1. Patient with active resistant periodontal diseases.

2. Patients with parafunctional habits and bruxism.

3. Patients with poor oral hygiene, high caries risk and uncooperative patients. 3- Pregnant women.

4. Patients in the growth stage with partially erupted teeth. 5- Psychiatric problems or unrealistic expectations.

6- Lack of opposing dentition in the area of interest. 7- Restored occlusal surface opposing the planned restoration. 8- The presence of a removable or fixed orthodontic appliance.

Related Conditions & MeSH terms

• Crowned Posterior Teeth
• Endodontically Treated Teeth
• Posterior Teeth
• Tooth, Nonvital
• Worn Posterior Teeth

Intervention

Other:
• monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime.
wear of the new material of monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime in posterior teeth
• Lithium Dislicate IPS e.max crown
wear of lithium disilicate IPS e.max crown in posterior teeth

Locations

Country	Name	City	State
Egypt	Cairo University	Cairo

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Country where clinical trial is conducted

Egypt, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The amount of occlusal wear in natural antagonist enamel caused by the restorative material	The amount of occlusal wear in natural antagonist enamel, using digital superimposition of model scans after 1 year, measured in micrometer.	1 year
Secondary	The amount of occlusal wear in the restorative material itself	The amount of occlusal wear in the restorative material itself, using digital superimposition of model scans after 1 year, measured in micrometers.	1 year