TY - JOUR
T1 - Retention of zirconia crowns to ti-base abutments
T2 - Effect of luting protocol, abutment treatment and autoclave sterilization
AU - Bergamo, Edmara T.P.
AU - Zahoui, Abbas
AU - Ikejiri, Larissa Luri Amorin
AU - Marun, Manoela
AU - da Silva, Kimberly Peixoto
AU - Coelho, Paulo G.
AU - Soares, Simone
AU - Bonfante, Estevam A.
N1 - Funding Information:
Authors thank São Paulo Research Foundation (FAPESP)-Young Investigators Awards grant #2012/19078-7, FAPESP EMU #2016/18818-8, FAPESP #2019/08693-1, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) grant #304589/2017-9 and #434487/2018-0, and to CAPES Finance Code 001.
Funding Information:
Authors thank São Paulo Research Foundation (FAPESP) - Young Investigators Awards grant #2012/19078-7, FAPESP EMU #2016/18818-8, FAPESP #2019/08693-1, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) grant #304589/2017-9 and #434487/2018-
Publisher Copyright:
© 2020 Japan Prosthodontic Society. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Purpose: To evaluate the influence of resin cement type, surface pretreatment and autoclave sterilization on the retention of Y-TZP crowns to Ti-base abutments. Methods: Y-TZP crowns were designed and milled to fit Ti-base abutments. Crowns were cemented using either a conventional resin cement (conventional) with a universal adhesive or a self-adhesive resin cement (self-adhesive), both following no surface pretreatment (No) or Ti-base abutment sandblasting (SB) (n=20/group). Half of the cemented samples were subjected to in-office autoclave sterilization. Pullout testing was performed in a universal testing machine at a speed of 1 mm/min until crown displacement. Data were statistically evaluated through a linear mixed model following post hoc comparisons by LSD test. Results: Pullout data as a function of cement type demonstrated higher retention for conventional relative to self-adhesive cement (p<0.001). Ti-base sandblasting (SB) favored crown retentiveness over No pretreatment (p<0.001). Sterilized crowns exhibited higher pullout values than non-sterile (p=0.036). All the two-and three-factor interaction analyses corroborated with the superior adhesive strength of conventional compared to self-adhesive cement (all, p<0.011), as well as, SB relative to No pretreatment (all, p<0.024). While autoclave sterilization maximized bond strength when self-adhesive cement (data collapsed over surface pretreatment, p<0.050) and No pretreatment were evaluated (data collapsed over surface pretreatment, p<0.013), no significant difference was observed for conventional resin cement (p=0.280) and SB (p=0.878) groups. Conclusions: Conventional resin cement and/or Ti-base sandblasting increased Y-TZP crown retentiveness, with no significant influence of autoclave sterilization. Autoclaving increased retentiveness when self-adhesive cement and/or no Ti-base pretreatment were used.
AB - Purpose: To evaluate the influence of resin cement type, surface pretreatment and autoclave sterilization on the retention of Y-TZP crowns to Ti-base abutments. Methods: Y-TZP crowns were designed and milled to fit Ti-base abutments. Crowns were cemented using either a conventional resin cement (conventional) with a universal adhesive or a self-adhesive resin cement (self-adhesive), both following no surface pretreatment (No) or Ti-base abutment sandblasting (SB) (n=20/group). Half of the cemented samples were subjected to in-office autoclave sterilization. Pullout testing was performed in a universal testing machine at a speed of 1 mm/min until crown displacement. Data were statistically evaluated through a linear mixed model following post hoc comparisons by LSD test. Results: Pullout data as a function of cement type demonstrated higher retention for conventional relative to self-adhesive cement (p<0.001). Ti-base sandblasting (SB) favored crown retentiveness over No pretreatment (p<0.001). Sterilized crowns exhibited higher pullout values than non-sterile (p=0.036). All the two-and three-factor interaction analyses corroborated with the superior adhesive strength of conventional compared to self-adhesive cement (all, p<0.011), as well as, SB relative to No pretreatment (all, p<0.024). While autoclave sterilization maximized bond strength when self-adhesive cement (data collapsed over surface pretreatment, p<0.050) and No pretreatment were evaluated (data collapsed over surface pretreatment, p<0.013), no significant difference was observed for conventional resin cement (p=0.280) and SB (p=0.878) groups. Conclusions: Conventional resin cement and/or Ti-base sandblasting increased Y-TZP crown retentiveness, with no significant influence of autoclave sterilization. Autoclaving increased retentiveness when self-adhesive cement and/or no Ti-base pretreatment were used.
KW - Dental implants
KW - Dental prosthesis
KW - Dental prosthesis Retention
KW - Resin cement
KW - Sterilization
KW - Dental Abutments
KW - Materials Testing
KW - Dental Cements
KW - Zirconium
KW - Crowns
KW - Surface Properties
KW - Dental Stress Analysis
KW - Titanium
KW - Resin Cements
KW - Dental Prosthesis Retention
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U2 - 10.2186/JPR.JPOR_2019_537
DO - 10.2186/JPR.JPOR_2019_537
M3 - Article
C2 - 32938879
AN - SCOPUS:85110498526
SN - 1883-1958
VL - 65
SP - 171
EP - 175
JO - Nippon Hotetsu Shika Gakkai zasshi
JF - Nippon Hotetsu Shika Gakkai zasshi
IS - 2
ER -