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Related Experiment Video

Updated: Feb 23, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

Influence of Different Ceramic Systems on Marginal Misfit.

S P Vargas¹, A C C Neves¹, R Vitti¹

¹Department of Dentistry, University of Taubaté, Taubaté, Brazil.

The European Journal of Prosthodontics and Restorative Dentistry

|September 5, 2017

Summary

This summary is machine-generated.

Cementation increases marginal misfit in ceramic restorations. Lithium disilicate showed the lowest gaps, while zirconia and leucite had similar values. Mechanical cycling did not affect misfit.

Keywords:

CAD/CAM Cementation Dental Implant Marginal Misfit

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Area of Science:

Dental Materials Science
Biomaterials Engineering
Prosthodontics

Background:

Accurate marginal fit of ceramic restorations is crucial for long-term success.
Understanding the influence of different ceramic materials and cementation on marginal misfit is essential.

Purpose of the Study:

To evaluate the marginal misfit between ceramic copings and abutments after cementation and mechanical cycling.
To compare marginal misfit across three different ceramic systems: zirconia, lithium disilicate, and leucite.

Main Methods:

Twenty-four ceramic copings (Lava, IPS e.max Press, IPS Empress Esthetic) were fabricated on solid abutments.
Marginal misfit was measured initially, after cementation with resin luting agent, and after 1 million mechanical cycles.
Measurements were performed using a linear measuring microscope at 40x magnification.

Main Results:

All ceramic groups exhibited increased marginal misfit after cementation.
Lithium disilicate (IPS e.max Press) consistently showed the lowest interfacial gap values.
Zirconia (Lava) and leucite (IPS Empress Esthetic) groups presented similar marginal misfit values at all evaluation points.

Conclusions:

Cementation significantly increases marginal misfit in ceramic restorations.
Mechanical cycling up to 1 million cycles did not further influence the marginal misfit of the evaluated ceramic systems.
Lithium disilicate appears to offer superior marginal fit compared to zirconia and leucite under the tested conditions.