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Related Experiment Video

Updated: Jan 28, 2026

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Multi-material Ceramic-Based Components – Additive Manufacturing of Black-and-white Zirconia Components by Thermoplastic 3D-Printing (CerAM - T3DP)

Published on: January 7, 2019

New multi-layered zirconias: Composition, microstructure and translucency.

Nantawan Kolakarnprasert¹, Marina R Kaizer², Do Kyung Kim³

¹Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, USA.

Dental Materials : Official Publication of the Academy of Dental Materials

|March 12, 2019

Summary

This summary is machine-generated.

New multi-layered zirconias (UTML, STML, ML) show distinct properties. UTML and STML offer superior translucency and LTD resistance compared to ML, crucial for clinical applications.

Keywords:

Chemical composition Dental ceramics Low temperature degradation Microstructure Multi-layered zirconia Phase content Translucency properties

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Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

Area of Science:

Dental Materials Science
Biomaterials Engineering
Ceramic Science

Background:

Multi-layered zirconias offer aesthetic advantages in dental restorations.
Understanding material properties is key to maximizing clinical benefits.
Zirconia's composition and microstructure influence its performance.

Purpose of the Study:

To comprehensively analyze the chemical composition, microstructure, low temperature degradation (LTD) resistance, and translucency of three multi-layered zirconia grades.
To compare the properties of Ultra Translucent Multi-layered zirconia (UTML), Super Translucent Multi-layered zirconia (STML), and Multi-layered zirconia (ML).

Main Methods:

Selected zirconia systems (Katana, Kuraray Noritake) including UTML, STML, and ML.
Characterized chemical composition (XRF), phase fractions (XRD), and microstructure (FE-SEM).
Assessed LTD resistance via water aging and measured translucency.

Main Results:

UTML (5Y-PSZ), STML (4Y-PSZ), and ML (3Y-PSZ) exhibited distinct cubic content and grain sizes.
ML showed increased monoclinic content after LTD testing; UTML and STML did not.
UTML and STML demonstrated superior translucency compared to ML, with similar translucency between UTML and STML.

Conclusions:

The layers within each multi-layered zirconia grade primarily differ in pigment content, creating natural shade gradients.
Despite compositional differences, UTML and STML exhibit comparable translucency.
The distinct properties of UTML and STML make them suitable for a wider range of clinical indications requiring high aesthetics and durability.