TY - JOUR
T1 - Cementation Protocol for Bonding Zirconia Crowns to Titanium Base CAD/CAM Abutments
AU - Zahoui, Abbas
AU - Bergamo, Edmara T.P.
AU - Marun, Manoela M.
AU - Silva, Kimberly P.
AU - Coelho, Paulo G.
AU - Bonfante, Estevam A.
N1 - Funding Information:
This study was supported by the São Paulo Research Foundation (FAPESP) grants 2012/19078-7, EMU (Multi-user Equipment) 2016/18818-8, and 2019/08693-1, Conselho Nacional de Desen-volvimento Científico e Tecnológico (CNPq) grants 304589/2017-9 and 434487/2018-0, and the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Finance Code 001. The authors report no conflicts of interest.
Funding Information:
This study was supported by the S?o Paulo Research Foundation (FAPESP) grants 2012/19078-7, EMU (Multi-user Equipment) 2016/18818-8, and 2019/08693-1, Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) grants 304589/2017-9 and 434487/2018-0, and the Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) Finance Code 001. The authors report no conflicts of interest.
Publisher Copyright:
© 2020. All Rights Reserved.
PY - 2020/9/23
Y1 - 2020/9/23
N2 - Purpose: To establish the most effective cementation protocol for bonding zirconia crowns to Ti-Base CAD/CAM abutments in terms of abutment height, cement type, and surface pretreatment. Materials and Methods: Zirconia crowns were designed to fit abutments of 2.5-mm (short) and 4.0-mm (tall) height. The retention of conventional resin cement with a universal adhesive (RelyX Ultimate, 3M ESPE) was compared to self-adhesive resin cement (RelyX U200, 3M ESPE) following different surface pretreatments (n = 10/group): (1) no treatment (NT); (2) Ti-Base abutment surface blasting with alumina particles (SB); (3) zirconia crown tribochemical surface blasting with silica-coated alumina particles (TBS); and (4) a combination of SB + TBS. Pull-out testing was performed in a universal testing machine. Data were statistically evaluated using a linear mixed model following least significant difference post hoc test. Results: Pull-out data as a function of Ti-Base height demonstrated higher retention for tall compared to short abutments (P <.001). Ultimate outperformed U200 cement (data collapsed over height and pretreatment) (P <.001). Analysis of pretreatment depicted higher retention for SB + TBS, followed by SB, TBS, and NT (P <.04). The interaction between Ti-Base height and cement type highlighted the superior adhesive strength of Ultimate compared to U200 for both heights (P <.001). Irrespective of type of pretreatment, surface pretreatment improved the retention for U200 cement and short Ti-Base (P <.03 compared to NT). In contrast, higher retention was demonstrated for SB + TBS, followed by SB, TBS, and NT, for Ultimate cement combined with tall Ti-Base (P <.02) (data collapsed over height and cement, respectively). Conclusion: There was a direct relationship among Ti-Base height, micromechanical and/or chemical pretreatment, and conventional adhesive bonding in improving the retention of zirconia crowns. Int J Prosthodont 2020;33:527-535. doi: 10.11607/ijp.6696
AB - Purpose: To establish the most effective cementation protocol for bonding zirconia crowns to Ti-Base CAD/CAM abutments in terms of abutment height, cement type, and surface pretreatment. Materials and Methods: Zirconia crowns were designed to fit abutments of 2.5-mm (short) and 4.0-mm (tall) height. The retention of conventional resin cement with a universal adhesive (RelyX Ultimate, 3M ESPE) was compared to self-adhesive resin cement (RelyX U200, 3M ESPE) following different surface pretreatments (n = 10/group): (1) no treatment (NT); (2) Ti-Base abutment surface blasting with alumina particles (SB); (3) zirconia crown tribochemical surface blasting with silica-coated alumina particles (TBS); and (4) a combination of SB + TBS. Pull-out testing was performed in a universal testing machine. Data were statistically evaluated using a linear mixed model following least significant difference post hoc test. Results: Pull-out data as a function of Ti-Base height demonstrated higher retention for tall compared to short abutments (P <.001). Ultimate outperformed U200 cement (data collapsed over height and pretreatment) (P <.001). Analysis of pretreatment depicted higher retention for SB + TBS, followed by SB, TBS, and NT (P <.04). The interaction between Ti-Base height and cement type highlighted the superior adhesive strength of Ultimate compared to U200 for both heights (P <.001). Irrespective of type of pretreatment, surface pretreatment improved the retention for U200 cement and short Ti-Base (P <.03 compared to NT). In contrast, higher retention was demonstrated for SB + TBS, followed by SB, TBS, and NT, for Ultimate cement combined with tall Ti-Base (P <.02) (data collapsed over height and cement, respectively). Conclusion: There was a direct relationship among Ti-Base height, micromechanical and/or chemical pretreatment, and conventional adhesive bonding in improving the retention of zirconia crowns. Int J Prosthodont 2020;33:527-535. doi: 10.11607/ijp.6696
KW - Cementation
KW - Computer-Aided Design
KW - Crowns
KW - Dental Abutments
KW - Dental Stress Analysis
KW - Materials Testing
KW - Resin Cements
KW - Titanium
KW - Zirconium
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U2 - 10.11607/ijp.6696
DO - 10.11607/ijp.6696
M3 - Article
C2 - 32956434
AN - SCOPUS:85091459401
SN - 0893-2174
VL - 33
SP - 527
EP - 535
JO - International Journal of Prosthodontics
JF - International Journal of Prosthodontics
IS - 5
ER -