Abstract
Objective: To assess the influence of alumina sandblasting on four highly translucent dental zirconia grades. Methods: Fully sintered zirconia disk-shaped specimens (15-mm diameter; 0.5-mm thickness) of four highly translucent yttria partially stabilized zirconia (Y-PSZ) grades (KATANA HT, KATANA STML, KATANA UTML, Kuraray Noritake; Zpex Smile, Tosoh) were sandblasted with 50-μm alumina (Al2O3) sand (Kulzer) or left ‘as-sintered’ (control) (n = 5). For each zirconia grade, the translucency was measured using a colorimeter. Surface roughness was assessed using 3D confocal laser microscopy, upon which the zirconia grades were statistically compared for surface roughness using a Kruskal–Wallis test (n = 10). X-ray diffraction (XRD) with Rietveld analysis was used to assess the zirconia-phase composition. Micro-Raman spectroscopy was used to assess the potentially induced residual stress. Results: The translucency of KATANA UTML was the highest (36.7 ± 1.8), whereas that of KATANA HT was the lowest (29.5 ± 0.9). The ‘Al2O3-sandblasted’ and ‘as-sintered’ zirconia revealed comparable surface-roughness Sa values. Regarding zirconia-phase composition, XRD with Rietveld analysis revealed that the ‘as-sintered’ KATANA UTML contained the highest amount of cubic zirconia (c-ZrO2) phase (71 wt%), while KATANA HT had the lowest amount of c-ZrO2 phase (41 wt%). KATANA STML and Zpex Smile had a comparable zirconia-phase composition (60 wt% c-ZrO2 phase). After Al2O3-sandblasting, a significant amount (over 25 wt%) of rhombohedral zirconia (r-ZrO2) phase was detected for all highly translucent zirconia grades. Significance: Al2O3-sandblasting did not affect the surface roughness of the three highly translucent Y-PSZ zirconia grades, but it changed its phase composition.
| Original language | English |
|---|---|
| Pages (from-to) | 508-518 |
| Number of pages | 11 |
| Journal | Dental Materials |
| Volume | 34 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 1 2018 |
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Keywords
- Alumina sandblasting
- Micro-Raman
- Stress
- XRD
- Zirconia
ASJC Scopus subject areas
- Materials Science(all)
- Dentistry(all)
- Mechanics of Materials
Cite this
Crystallographic and morphological analysis of sandblasted highly translucent dental zirconia. / Inokoshi, Masanao; Shimizu, Haruki; Nozaki, Kosuke; Takagaki, Tomohiro; Yoshihara, Kumiko; Nagaoka, Noriyuki; Zhang, Fei; Vleugels, Jozef; Van Meerbeek, Bart; Minakuchi, Shunsuke.
In: Dental Materials, Vol. 34, No. 3, 01.03.2018, p. 508-518.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Crystallographic and morphological analysis of sandblasted highly translucent dental zirconia
AU - Inokoshi, Masanao
AU - Shimizu, Haruki
AU - Nozaki, Kosuke
AU - Takagaki, Tomohiro
AU - Yoshihara, Kumiko
AU - Nagaoka, Noriyuki
AU - Zhang, Fei
AU - Vleugels, Jozef
AU - Van Meerbeek, Bart
AU - Minakuchi, Shunsuke
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Objective: To assess the influence of alumina sandblasting on four highly translucent dental zirconia grades. Methods: Fully sintered zirconia disk-shaped specimens (15-mm diameter; 0.5-mm thickness) of four highly translucent yttria partially stabilized zirconia (Y-PSZ) grades (KATANA HT, KATANA STML, KATANA UTML, Kuraray Noritake; Zpex Smile, Tosoh) were sandblasted with 50-μm alumina (Al2O3) sand (Kulzer) or left ‘as-sintered’ (control) (n = 5). For each zirconia grade, the translucency was measured using a colorimeter. Surface roughness was assessed using 3D confocal laser microscopy, upon which the zirconia grades were statistically compared for surface roughness using a Kruskal–Wallis test (n = 10). X-ray diffraction (XRD) with Rietveld analysis was used to assess the zirconia-phase composition. Micro-Raman spectroscopy was used to assess the potentially induced residual stress. Results: The translucency of KATANA UTML was the highest (36.7 ± 1.8), whereas that of KATANA HT was the lowest (29.5 ± 0.9). The ‘Al2O3-sandblasted’ and ‘as-sintered’ zirconia revealed comparable surface-roughness Sa values. Regarding zirconia-phase composition, XRD with Rietveld analysis revealed that the ‘as-sintered’ KATANA UTML contained the highest amount of cubic zirconia (c-ZrO2) phase (71 wt%), while KATANA HT had the lowest amount of c-ZrO2 phase (41 wt%). KATANA STML and Zpex Smile had a comparable zirconia-phase composition (60 wt% c-ZrO2 phase). After Al2O3-sandblasting, a significant amount (over 25 wt%) of rhombohedral zirconia (r-ZrO2) phase was detected for all highly translucent zirconia grades. Significance: Al2O3-sandblasting did not affect the surface roughness of the three highly translucent Y-PSZ zirconia grades, but it changed its phase composition.
AB - Objective: To assess the influence of alumina sandblasting on four highly translucent dental zirconia grades. Methods: Fully sintered zirconia disk-shaped specimens (15-mm diameter; 0.5-mm thickness) of four highly translucent yttria partially stabilized zirconia (Y-PSZ) grades (KATANA HT, KATANA STML, KATANA UTML, Kuraray Noritake; Zpex Smile, Tosoh) were sandblasted with 50-μm alumina (Al2O3) sand (Kulzer) or left ‘as-sintered’ (control) (n = 5). For each zirconia grade, the translucency was measured using a colorimeter. Surface roughness was assessed using 3D confocal laser microscopy, upon which the zirconia grades were statistically compared for surface roughness using a Kruskal–Wallis test (n = 10). X-ray diffraction (XRD) with Rietveld analysis was used to assess the zirconia-phase composition. Micro-Raman spectroscopy was used to assess the potentially induced residual stress. Results: The translucency of KATANA UTML was the highest (36.7 ± 1.8), whereas that of KATANA HT was the lowest (29.5 ± 0.9). The ‘Al2O3-sandblasted’ and ‘as-sintered’ zirconia revealed comparable surface-roughness Sa values. Regarding zirconia-phase composition, XRD with Rietveld analysis revealed that the ‘as-sintered’ KATANA UTML contained the highest amount of cubic zirconia (c-ZrO2) phase (71 wt%), while KATANA HT had the lowest amount of c-ZrO2 phase (41 wt%). KATANA STML and Zpex Smile had a comparable zirconia-phase composition (60 wt% c-ZrO2 phase). After Al2O3-sandblasting, a significant amount (over 25 wt%) of rhombohedral zirconia (r-ZrO2) phase was detected for all highly translucent zirconia grades. Significance: Al2O3-sandblasting did not affect the surface roughness of the three highly translucent Y-PSZ zirconia grades, but it changed its phase composition.
KW - Alumina sandblasting
KW - Micro-Raman
KW - Stress
KW - XRD
KW - Zirconia
UR - http://www.scopus.com/inward/record.url?scp=85042074480&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042074480&partnerID=8YFLogxK
U2 - 10.1016/j.dental.2017.12.008
DO - 10.1016/j.dental.2017.12.008
M3 - Article
VL - 34
SP - 508
EP - 518
JO - Dental Materials
JF - Dental Materials
SN - 0109-5641
IS - 3
ER -