Mechanical properties and resistance to hydrothermal aging of ceria- and yttria-doped tetragonal zirconia ceramics

Lin, Jinyao; Duh, Jenq‐Gong; Lo, Chung-Lun

doi:10.1016/s0254-0584(02)00161-x

Cited by 36 publications

(25 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Tanaka et al also demonstrated that Y-TZP showed an increase in the monoclinic phase from 0.4 to 25.3 vol % at 18 h and 81.0 vol % at 190 h under 1218C, whereas the Ce-TZP/Al 2 O 3 nanocomposite showed a slight increase ranging from 5.7 to 6.8 vol % at 18 h and 8% at 190 h. 31,32 Therefore, we conclude that the Ce-TZP/Al 2 O 3 nanocomposite rarely undergoes LTAD in aqueous solutions, like conventional Ce-TZP without Al 2 O 3 . 33,34 This is probably because any Y 2 O 3 reacts rapidly with water vapor to form yttrium hydroxide, resulting in instability of the tetragonal phase. 34 Then, It is conceived that the mechanical durability of the Ce-TZP/ Al 2 O 3 nanocomposite is superior to that of the Y-TZP relating to LTD.…”

Section: Discussionmentioning

confidence: 99%

“…33,34 This is probably because any Y 2 O 3 reacts rapidly with water vapor to form yttrium hydroxide, resulting in instability of the tetragonal phase. 34 Then, It is conceived that the mechanical durability of the Ce-TZP/ Al 2 O 3 nanocomposite is superior to that of the Y-TZP relating to LTD. It has been determined that property degradation incurred on aging is connected with microcracking induced by the tetragonal to monoclinic phase transformation.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives

et al. 2008

View full text Add to dashboard Cite

The purpose of the present study was to evaluate the mechanical durability of a zirconia/alumina nanocomposite stabilized with cerium oxide (Ce-TZP/Al(2)O(3) nanocomposite) in comparison to yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) and discuss its application on ceramic dental restorations. The disk-shaped specimens of both materials were stored in physiological saline solution at 80 degrees C for 30 days, in 4% acetic acid at 80 degrees C for 30 days, and in an autoclave at 121 degrees C for 10 days. Before and after storage, specimens were subjected to the biaxial flexure test and to the determination of the monoclinic zirconia content. After autoclaving, Y-TZP showed remarkable increasing of the content of monoclinic zirconia: 0.3 vol % before and 49.9 vol % after, and slight decreasing of biaxial flexure strength: 1046 MPa before and 892 MPa after; whereas Ce-TZP/Al(2)O(3) nanocomposite showed no significant difference in the monoclinic content (4.8-5.5 vol %) and the biaxial flexure strength (1371-1422 MPa) after storage in any conditions. It is concluded that, compared to Y-TZP, the Ce-TZP/Al(2)O(3) nanocomposite has a high biaxial flexure strength along with a satisfactory durability in terms of low-temperature aging degradation in above conditions. This study indicates that the Ce-TZP/Al(2)O(3) nanocomposite demonstrates excellent mechanical durability for dental restorations such as all-ceramic bridges.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives

et al. 2008

View full text Add to dashboard Cite

show abstract

“…7). This is probably because any Y 2 O 3 reacts rapidly with water vapor to form yttrium hydroxide, resulting in instability of the tetragonal zirconia [27].…”

Section: Long-term Stabilitymentioning

confidence: 99%

Reliability and properties of core materials for all-ceramic dental restorations

Ban

2008

Japanese Dental Science Review

142

105

View full text Add to dashboard Cite

“…Several works have proved that co-doping Y-TZP with Ce can improve substantially the degradation behavior (Boutz et al, 1995;Lin and Duh, 2003;Marro et al, 2011;Sato et al, 1987), probably due to the reduction in concentration of oxygen vacancies decreasing in this way the diffusion of water species which has been recognized as the trigger mechanism for the degradation phenomenon (Guo, 1998). In a recent work by the authors (Camposilvan et al, 2015), Ce co-doping was performed by infiltration in the pre-sintered state to increase the degradation resistance of 3Y-TZP.…”

Section: Introductionmentioning

confidence: 99%

Surface roughened zirconia: towards hydrothermal stability

Camposilvan

Flamant

Anglada

2015

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

Surface roughness is needed in several yttria-stabilized zirconia components used in restorative dentistry for osseointegration or adhesion purposes. This can be achieved by different treatments, which may also modify the microstructure of the surface. Among them, sandblasting and chemical etching are widely used, but their effect on hydrothermal aging of zirconia is not fully understood. In the present work, the zirconia long-term stability of rough surfaces prepared by these techniques is analyzed and a method is proposed for preventing hydrothermal aging while maintaining the original surface appearance and mechanical properties. The method involves pressure infiltration of a Cerium salt solution on the roughened surfaces followed by a thermal treatment. The solution, trapped by surface defects and small pores, is decomposed during thermal treatment into Cerium oxide, which is diffused at high temperature, obtaining Ce co-doping in the near-surface region.In addition, the microstructural changes induced in the near-surface by sandblasting or chemical etching are removed by the thermal treatment together with surface defects. No color modification was observed and the final roughness parameters were in the range of existing implants of proved good osseointegration. The aging resistance of Ce co-doped materials was strongly enhanced, showing the absence of aging after artificial degradation, increasing in this way the surface mechanical integrity.The proposed treatment is easily applicable to the current manufacturing procedures of zirconia dental posts, abutments, crowns and dentures, representing a solution to hydrothermal aging in these and other biomedical applications.

show abstract

Mechanical properties and resistance to hydrothermal aging of ceria- and yttria-doped tetragonal zirconia ceramics

Cited by 36 publications

References 40 publications

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives

Reliability and properties of core materials for all-ceramic dental restorations

Surface roughened zirconia: towards hydrothermal stability

Contact Info

Product

Resources

About

Mechanical properties and resistance to hydrothermal aging of ceria- and yttria-doped tetragonal zirconia ceramics

Cited by 36 publications

References 40 publications

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al2O3 nanocomposite and Y‐TZP as dental restoratives

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al2O3 nanocomposite and Y‐TZP as dental restoratives

Reliability and properties of core materials for all-ceramic dental restorations

Surface roughened zirconia: towards hydrothermal stability

Contact Info

Product

Resources

About

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives

Biaxial flexure strength and low temperature degradation of Ce‐TZP/Al₂O₃ nanocomposite and Y‐TZP as dental restoratives