Y-TZP and In-mouth Low Thermal Degradation: A Prospective Clinical Study

University of Liege

Status: Unknown

Conditions: Zirconia Monolithic Dental Restorations: In-mouth Behaviour, LTD and Wear

Treatments: Device: Lava plus (3M) crowns and bridges

Study type: Interventional

Funder types: Other

Identifiers

NCT02150226

FZ001

Details and patient eligibility

About

The objective of this work is to study in-mouth aging and LTD of monolithic zirconia restorations. Microstructural changes characteristic of LTD processes, wear, and clinical behaviour following standard parameters will be evaluated. Notably Raman spectroscopy and 3D laser surface analysis will be used, directly on the restorations, which will be removed at regular intervals.The working hypothesis is that LTD process is very slow at the scale at the lifespan of dental prostheses.

Enrollment: 101 patients

Sex: All

Volunteers: No Healthy Volunteers

Inclusion criteria

• Full zirconia crowns in the posterior region (molar/premolar)
• On teeth or implants
• Single unit restorations cemented on natural teeth and implants (including screw-retained restorations if possible, but no internal connections)
• Multi-unit restorations on implants
• If nightguard: to be performed on the antagonist

Exclusion criteria

• Patients with removable prosthesis as an antagonist

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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101 participants in 1 patient group

Experimental: Zirconia monolithic crowns and bridges

Experimental group

Description:

Evaluation of Lava Plus zirconia dental crowns and bridges

Treatment:

Device: Lava plus (3M) crowns and bridges