A comparison of bond strength of layered veneering porcelains to zirconia and metal

Ayako Saito, Futoshi Komine, Markus B. Blatz, Hideo Matsumura

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Statement of problem High chipping rates of veneering porcelain for zirconia ceramic restorations have been reported in clinical studies. The information on the bonding behavior of veneering porcelain to zirconia frameworks is limited. Purpose This study assessed the relationship between coefficient of thermal expansion (CTE) and shear bond strength of veneering porcelain to zirconia frameworks. Material and methods Zirconia ceramics (Katana; ZrO 2 ), casting gold alloy (DeguDent U; DEG), and feldspathic porcelain (Cerabien ZR; CZR) were used as the bonding substrates. Five types of porcelain (CZR, Cercon ceramkiss (CER), IPS e.max Ceram (EMX), Vintage ZR (VZR), and VITA VM 9 (VM9)) were fired to ZrO 2 discs (n=8). Feldspathic porcelain (Super Porcelain AAA; AAA) designed for metal ceramic systems was fired to DEG discs. To evaluate the strength of veneering porcelain, CZR was veneered on CZR discs. The porcelain with a strong thermal mismatch for each substrate was applied; AAA and CZR were applied to ZrO 2 and DEG substrates, respectively. Shear bond strength was tested after 24 hours of water storage. Debonded surfaces were examined with an optical microscope and SEM. Data were analyzed with 1- and 2-way ANOVA followed by Dunnett and Tukey multiple comparison tests (α=.05). Results No significant differences in the mean shear bond strength (MPa) were found between groups ZrO 2 -VZR (24.8), ZrO 2 -CZR (27.0), and ZrO 2 -VM9 (30.9). ZrO 2 -CER (22.0) (P=.017) and -EMX (22.1) (P=.020) groups had significantly lower bond strengths than the ZrO 2 -CZR group. ZrO 2 -CZR, -VM9, -CER, -VZR, and -EMX groups demonstrated cohesive failures in veneering porcelain. There was no significant difference among the groups ZrO 2 -CZR, DEG-AAA, and CZR-CZR. Two-way ANOVA showed that interaction between the 2 factors was significant (P<.001). Conclusions Strong discrepancies in CTE between veneering porcelains and zirconia significantly affect their bond strength.

Original languageEnglish (US)
Pages (from-to)247-257
Number of pages11
JournalJournal of Prosthetic Dentistry
Volume104
Issue number4
DOIs
StatePublished - Oct 1 2010

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Dental Porcelain
Metals
Shear Strength
Ceramics
Hot Temperature
Analysis of Variance
zirconium oxide
Gold Alloys

ASJC Scopus subject areas

  • Oral Surgery

Cite this

A comparison of bond strength of layered veneering porcelains to zirconia and metal. / Saito, Ayako; Komine, Futoshi; Blatz, Markus B.; Matsumura, Hideo.

In: Journal of Prosthetic Dentistry, Vol. 104, No. 4, 01.10.2010, p. 247-257.

Research output: Contribution to journalArticle

Saito, Ayako ; Komine, Futoshi ; Blatz, Markus B. ; Matsumura, Hideo. / A comparison of bond strength of layered veneering porcelains to zirconia and metal. In: Journal of Prosthetic Dentistry. 2010 ; Vol. 104, No. 4. pp. 247-257.
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title = "A comparison of bond strength of layered veneering porcelains to zirconia and metal",
abstract = "Statement of problem High chipping rates of veneering porcelain for zirconia ceramic restorations have been reported in clinical studies. The information on the bonding behavior of veneering porcelain to zirconia frameworks is limited. Purpose This study assessed the relationship between coefficient of thermal expansion (CTE) and shear bond strength of veneering porcelain to zirconia frameworks. Material and methods Zirconia ceramics (Katana; ZrO 2 ), casting gold alloy (DeguDent U; DEG), and feldspathic porcelain (Cerabien ZR; CZR) were used as the bonding substrates. Five types of porcelain (CZR, Cercon ceramkiss (CER), IPS e.max Ceram (EMX), Vintage ZR (VZR), and VITA VM 9 (VM9)) were fired to ZrO 2 discs (n=8). Feldspathic porcelain (Super Porcelain AAA; AAA) designed for metal ceramic systems was fired to DEG discs. To evaluate the strength of veneering porcelain, CZR was veneered on CZR discs. The porcelain with a strong thermal mismatch for each substrate was applied; AAA and CZR were applied to ZrO 2 and DEG substrates, respectively. Shear bond strength was tested after 24 hours of water storage. Debonded surfaces were examined with an optical microscope and SEM. Data were analyzed with 1- and 2-way ANOVA followed by Dunnett and Tukey multiple comparison tests (α=.05). Results No significant differences in the mean shear bond strength (MPa) were found between groups ZrO 2 -VZR (24.8), ZrO 2 -CZR (27.0), and ZrO 2 -VM9 (30.9). ZrO 2 -CER (22.0) (P=.017) and -EMX (22.1) (P=.020) groups had significantly lower bond strengths than the ZrO 2 -CZR group. ZrO 2 -CZR, -VM9, -CER, -VZR, and -EMX groups demonstrated cohesive failures in veneering porcelain. There was no significant difference among the groups ZrO 2 -CZR, DEG-AAA, and CZR-CZR. Two-way ANOVA showed that interaction between the 2 factors was significant (P<.001). Conclusions Strong discrepancies in CTE between veneering porcelains and zirconia significantly affect their bond strength.",
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AU - Komine, Futoshi

AU - Blatz, Markus B.

AU - Matsumura, Hideo

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N2 - Statement of problem High chipping rates of veneering porcelain for zirconia ceramic restorations have been reported in clinical studies. The information on the bonding behavior of veneering porcelain to zirconia frameworks is limited. Purpose This study assessed the relationship between coefficient of thermal expansion (CTE) and shear bond strength of veneering porcelain to zirconia frameworks. Material and methods Zirconia ceramics (Katana; ZrO 2 ), casting gold alloy (DeguDent U; DEG), and feldspathic porcelain (Cerabien ZR; CZR) were used as the bonding substrates. Five types of porcelain (CZR, Cercon ceramkiss (CER), IPS e.max Ceram (EMX), Vintage ZR (VZR), and VITA VM 9 (VM9)) were fired to ZrO 2 discs (n=8). Feldspathic porcelain (Super Porcelain AAA; AAA) designed for metal ceramic systems was fired to DEG discs. To evaluate the strength of veneering porcelain, CZR was veneered on CZR discs. The porcelain with a strong thermal mismatch for each substrate was applied; AAA and CZR were applied to ZrO 2 and DEG substrates, respectively. Shear bond strength was tested after 24 hours of water storage. Debonded surfaces were examined with an optical microscope and SEM. Data were analyzed with 1- and 2-way ANOVA followed by Dunnett and Tukey multiple comparison tests (α=.05). Results No significant differences in the mean shear bond strength (MPa) were found between groups ZrO 2 -VZR (24.8), ZrO 2 -CZR (27.0), and ZrO 2 -VM9 (30.9). ZrO 2 -CER (22.0) (P=.017) and -EMX (22.1) (P=.020) groups had significantly lower bond strengths than the ZrO 2 -CZR group. ZrO 2 -CZR, -VM9, -CER, -VZR, and -EMX groups demonstrated cohesive failures in veneering porcelain. There was no significant difference among the groups ZrO 2 -CZR, DEG-AAA, and CZR-CZR. Two-way ANOVA showed that interaction between the 2 factors was significant (P<.001). Conclusions Strong discrepancies in CTE between veneering porcelains and zirconia significantly affect their bond strength.

AB - Statement of problem High chipping rates of veneering porcelain for zirconia ceramic restorations have been reported in clinical studies. The information on the bonding behavior of veneering porcelain to zirconia frameworks is limited. Purpose This study assessed the relationship between coefficient of thermal expansion (CTE) and shear bond strength of veneering porcelain to zirconia frameworks. Material and methods Zirconia ceramics (Katana; ZrO 2 ), casting gold alloy (DeguDent U; DEG), and feldspathic porcelain (Cerabien ZR; CZR) were used as the bonding substrates. Five types of porcelain (CZR, Cercon ceramkiss (CER), IPS e.max Ceram (EMX), Vintage ZR (VZR), and VITA VM 9 (VM9)) were fired to ZrO 2 discs (n=8). Feldspathic porcelain (Super Porcelain AAA; AAA) designed for metal ceramic systems was fired to DEG discs. To evaluate the strength of veneering porcelain, CZR was veneered on CZR discs. The porcelain with a strong thermal mismatch for each substrate was applied; AAA and CZR were applied to ZrO 2 and DEG substrates, respectively. Shear bond strength was tested after 24 hours of water storage. Debonded surfaces were examined with an optical microscope and SEM. Data were analyzed with 1- and 2-way ANOVA followed by Dunnett and Tukey multiple comparison tests (α=.05). Results No significant differences in the mean shear bond strength (MPa) were found between groups ZrO 2 -VZR (24.8), ZrO 2 -CZR (27.0), and ZrO 2 -VM9 (30.9). ZrO 2 -CER (22.0) (P=.017) and -EMX (22.1) (P=.020) groups had significantly lower bond strengths than the ZrO 2 -CZR group. ZrO 2 -CZR, -VM9, -CER, -VZR, and -EMX groups demonstrated cohesive failures in veneering porcelain. There was no significant difference among the groups ZrO 2 -CZR, DEG-AAA, and CZR-CZR. Two-way ANOVA showed that interaction between the 2 factors was significant (P<.001). Conclusions Strong discrepancies in CTE between veneering porcelains and zirconia significantly affect their bond strength.

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