Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes
Although sandblasting is mainly used to improve bonding between dental zirconia and resin cement, the details on the in-depth damages are limited. The aim of this study was to evaluate phase transformations and subsurface changes after sandblasting in three different dental zirconia (3, 4, and 5 mol...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-09-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/14/18/5321 |
id |
doaj-e2b566eefeee48f59bc20a506c62374d |
---|---|
record_format |
Article |
spelling |
doaj-e2b566eefeee48f59bc20a506c62374d2021-09-26T00:36:59ZengMDPI AGMaterials1996-19442021-09-01145321532110.3390/ma14185321Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle SizesHee-Kyung Kim0Kun-Woo Yoo1Seung-Joo Kim2Chang-Ho Jung3Department of Prosthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon 16499, KoreaDepartment of Chemistry and Department of Energy Systems Research, Ajou University, Suwon 16499, KoreaDepartment of Chemistry and Department of Energy Systems Research, Ajou University, Suwon 16499, KoreaDepartment of Mechanical Engineering, Ajou University, Suwon 16499, KoreaAlthough sandblasting is mainly used to improve bonding between dental zirconia and resin cement, the details on the in-depth damages are limited. The aim of this study was to evaluate phase transformations and subsurface changes after sandblasting in three different dental zirconia (3, 4, and 5 mol% yttria-stabilized zirconia; 3Y-TZP, 4Y-PSZ, and 5Y-PSZ). Zirconia specimens (14.0 × 14.0 × 1.0 mm<sup>3</sup>) were sandblasted using different alumina particle sizes (25, 50, 90, 110, and 125 µm) under 0.2 MPa for 10 s/cm<sup>2</sup>. Phase transformations and residual stresses were investigated using X-ray diffraction and the Williamson-Hall method. Subsurface damages were evaluated with cross-sections by a focused ion beam. Stress field during sandblasting was simulated by the finite element method. The subsurface changes after sandblasting were the emergence of a rhombohedral phase, micro/macro cracks, and compressive/tensile stresses depending on the interactions between blasting particles and zirconia substrates. 3Y-TZP blasted with 110-µm particles induced the deepest transformed layer with the largest compressive stress. The cracks propagated parallel to the surface with larger particles, being located up to 4.5 µm under the surface in 4Y- or 5Y-PSZ subgroups. The recommended sandblasting particles were 110 µm for 3Y-TZP and 50 µm for 4Y-PSZ or 5Y-PSZ for compressive stress-induced phase transformations without significant subsurface damages.https://www.mdpi.com/1996-1944/14/18/5321air abrasionzirconium oxidedental stress analysisphase transitionsurface tension |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hee-Kyung Kim Kun-Woo Yoo Seung-Joo Kim Chang-Ho Jung |
spellingShingle |
Hee-Kyung Kim Kun-Woo Yoo Seung-Joo Kim Chang-Ho Jung Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes Materials air abrasion zirconium oxide dental stress analysis phase transition surface tension |
author_facet |
Hee-Kyung Kim Kun-Woo Yoo Seung-Joo Kim Chang-Ho Jung |
author_sort |
Hee-Kyung Kim |
title |
Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes |
title_short |
Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes |
title_full |
Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes |
title_fullStr |
Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes |
title_full_unstemmed |
Phase Transformations and Subsurface Changes in Three Dental Zirconia Grades after Sandblasting with Various Al<sub>2</sub>O<sub>3</sub> Particle Sizes |
title_sort |
phase transformations and subsurface changes in three dental zirconia grades after sandblasting with various al<sub>2</sub>o<sub>3</sub> particle sizes |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-09-01 |
description |
Although sandblasting is mainly used to improve bonding between dental zirconia and resin cement, the details on the in-depth damages are limited. The aim of this study was to evaluate phase transformations and subsurface changes after sandblasting in three different dental zirconia (3, 4, and 5 mol% yttria-stabilized zirconia; 3Y-TZP, 4Y-PSZ, and 5Y-PSZ). Zirconia specimens (14.0 × 14.0 × 1.0 mm<sup>3</sup>) were sandblasted using different alumina particle sizes (25, 50, 90, 110, and 125 µm) under 0.2 MPa for 10 s/cm<sup>2</sup>. Phase transformations and residual stresses were investigated using X-ray diffraction and the Williamson-Hall method. Subsurface damages were evaluated with cross-sections by a focused ion beam. Stress field during sandblasting was simulated by the finite element method. The subsurface changes after sandblasting were the emergence of a rhombohedral phase, micro/macro cracks, and compressive/tensile stresses depending on the interactions between blasting particles and zirconia substrates. 3Y-TZP blasted with 110-µm particles induced the deepest transformed layer with the largest compressive stress. The cracks propagated parallel to the surface with larger particles, being located up to 4.5 µm under the surface in 4Y- or 5Y-PSZ subgroups. The recommended sandblasting particles were 110 µm for 3Y-TZP and 50 µm for 4Y-PSZ or 5Y-PSZ for compressive stress-induced phase transformations without significant subsurface damages. |
topic |
air abrasion zirconium oxide dental stress analysis phase transition surface tension |
url |
https://www.mdpi.com/1996-1944/14/18/5321 |
work_keys_str_mv |
AT heekyungkim phasetransformationsandsubsurfacechangesinthreedentalzirconiagradesaftersandblastingwithvariousalsub2subosub3subparticlesizes AT kunwooyoo phasetransformationsandsubsurfacechangesinthreedentalzirconiagradesaftersandblastingwithvariousalsub2subosub3subparticlesizes AT seungjookim phasetransformationsandsubsurfacechangesinthreedentalzirconiagradesaftersandblastingwithvariousalsub2subosub3subparticlesizes AT changhojung phasetransformationsandsubsurfacechangesinthreedentalzirconiagradesaftersandblastingwithvariousalsub2subosub3subparticlesizes |
_version_ |
1716870297685065728 |