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

NCT04805281 | Unknown

• 1 other identifier: 201020
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Posterior Teeth; Worn Posterior Teeth; Endodontically Treated Teeth; Crowned Posterior Teeth

Outcome Measures

Primary Outcomes (1)

• 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 Outcomes (1)

• The amount of occlusal wear in the restorative material itself

  1 year

Study Arms (2)

Lithium Disilicate IPS e.max crowns in posterior teeth

ACTIVE COMPARATOR

Other: Lithium Dislicate IPS e.max crown

Monolithic Zirconia (5Y-TZP/3-YTZP) crowns in posterior teeth

EXPERIMENTAL

Other: monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime.

Interventions

monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime. OTHER

wear of the new material of monolithic zirconia (5Y-TZP/3-YTZ) ZirCAD Prime in posterior teeth

Monolithic Zirconia (5Y-TZP/3-YTZP) crowns in posterior teeth

Lithium Dislicate IPS e.max crown OTHER

wear of lithium disilicate IPS e.max crown in posterior teeth

Lithium Disilicate IPS e.max crowns in posterior teeth

Eligibility Criteria

• Age: 21 Years - 50 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• All subjects are required to:
• 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.
• Patients with mutilated posterior teeth indicated for full coverage restorations.
• Patients with sound natural antagonists. 5- Able to attend punctually for preplanned visits and evaluation. 6- Have no active periodontal or pulpal diseases.
• There should be no apparent loss or wear in opposing enamel.

You may not qualify if:

• Patient with active resistant periodontal diseases.
• Patients with parafunctional habits and bruxism.
• Patients with poor oral hygiene, high caries risk and uncooperative patients. 3- Pregnant women.
• Patients in the growth stage with partially erupted teeth. 5- Psychiatric problems or unrealistic expectations.
• 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.

Sponsors & Collaborators

• Cairo University: lead

Study Sites (1)

Cairo University

Cairo, 11865, Egypt

RECRUITING

MeSH Terms

Conditions

Tooth, Nonvital

Condition Hierarchy (Ancestors)

Dental Pulp Diseases; Tooth Diseases; Stomatognathic Diseases

Central Study Contacts

Noran El Sharkawi, MSc

CONTACT

01006365953; noran.elsharqawy@dentistry.cu.edu.eg

Rana Sherif, professor

CONTACT

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: principal investigator

Study Record Dates

• First Submitted: February 17, 2021
• First Posted: March 18, 2021
• Study Start: August 1, 2021
• Primary Completion: March 1, 2022
• Study Completion: June 1, 2022
• Last Updated: June 10, 2021

Record last verified: 2021-06

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)