Digital light processing of zirconia prostheses with high strength and translucency for dental applications

Jong Hyun Kim; Woo Youl Maeng; Young Hag Koh; Hyoun Ee Kim

doi:10.1016/j.ceramint.2020.07.321

Digital light processing of zirconia prostheses with high strength and translucency for dental applications

Jong Hyun Kim, Woo Youl Maeng, Young Hag Koh, Hyoun Ee Kim

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

The present study describes the manufacturing of 4 mol% yttria partially stabilized zirconia (4Y-PSZ) prostheses with high mechanical properties and translucency using digital light processing (DLP). To formulate 4Y-PSZ suspensions with high solid loading and appropriate viscosity, as-received granules were calcined at 900 °C for 3 h and then crushed into fine particles. In addition, a mixture of low-viscosity hexanediol diacrylate (HDDA) monomer and decalin as the diluent was employed as the photopolymerizable medium. To achieve strong bonding between layers and high accuracy, the photocuring time during DLP process was optimized. 4Y-PSZ prostheses were almost fully densified after sintering at 1,500 °C for 2 h, which had a relative density of 99.4%. Also, no visible interfaces between the layers were noticed. The sintered 4Y-PSZ samples showed high flexural strength of 831 (±74) MPa and high optical transmittance of 30 (±1.2) %.

Original language	English
Pages (from-to)	28211-28218
Number of pages	8
Journal	Ceramics International
Volume	46
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2020.07.321
Publication status	Published - 2020 Dec 15

Bibliographical note

Funding Information:
This research was supported by the Technology Innovation Program (Contract No. 20001155 , Development of highly Transluscent/Tough Ceramic Materials and Manufacturing Technique for tailor-made Crown) funded by the Ministry of Trade, industry & Energy (MI, Korea).

Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.

Keywords

Additive manufacturing
Dental ceramics
Optical properties
Strength
Zirconia

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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title = "Digital light processing of zirconia prostheses with high strength and translucency for dental applications",

abstract = "The present study describes the manufacturing of 4 mol% yttria partially stabilized zirconia (4Y-PSZ) prostheses with high mechanical properties and translucency using digital light processing (DLP). To formulate 4Y-PSZ suspensions with high solid loading and appropriate viscosity, as-received granules were calcined at 900 °C for 3 h and then crushed into fine particles. In addition, a mixture of low-viscosity hexanediol diacrylate (HDDA) monomer and decalin as the diluent was employed as the photopolymerizable medium. To achieve strong bonding between layers and high accuracy, the photocuring time during DLP process was optimized. 4Y-PSZ prostheses were almost fully densified after sintering at 1,500 °C for 2 h, which had a relative density of 99.4%. Also, no visible interfaces between the layers were noticed. The sintered 4Y-PSZ samples showed high flexural strength of 831 (±74) MPa and high optical transmittance of 30 (±1.2) %.",

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author = "Kim, {Jong Hyun} and Maeng, {Woo Youl} and Koh, {Young Hag} and Kim, {Hyoun Ee}",

note = "Funding Information: This research was supported by the Technology Innovation Program (Contract No. 20001155 , Development of highly Transluscent/Tough Ceramic Materials and Manufacturing Technique for tailor-made Crown) funded by the Ministry of Trade, industry & Energy (MI, Korea). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd and Techna Group S.r.l.",

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AU - Kim, Jong Hyun

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AU - Koh, Young Hag

AU - Kim, Hyoun Ee

N1 - Funding Information: This research was supported by the Technology Innovation Program (Contract No. 20001155 , Development of highly Transluscent/Tough Ceramic Materials and Manufacturing Technique for tailor-made Crown) funded by the Ministry of Trade, industry & Energy (MI, Korea). Publisher Copyright: © 2020 Elsevier Ltd and Techna Group S.r.l.

PY - 2020/12/15

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KW - Optical properties

KW - Strength

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Digital light processing of zirconia prostheses with high strength and translucency for dental applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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