Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin
Background: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies. Materials and Methods: In this in vitro study, 30 crowns of sou...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2016-01-01
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| Series: | Dental Research Journal |
| Subjects: | |
| Online Access: | http://www.drjjournal.net/article.asp?issn=1735-3327;year=2016;volume=13;issue=2;spage=117;epage=123;aulast=Roperto |
| _version_ | 1828380355098312704 |
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| author | Renato Roperto Anna Akkus Ozan Akkus Lisa Lang Manoel Damiao Sousa-Neto Sorin Teich Thiago Soares Porto |
| author_facet | Renato Roperto Anna Akkus Ozan Akkus Lisa Lang Manoel Damiao Sousa-Neto Sorin Teich Thiago Soares Porto |
| author_sort | Renato Roperto |
| collection | DOAJ |
| description | Background: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies.
Materials and Methods: In this in vitro study, 30 crowns of sound freshly extracted human molars were sectioned horizontally 3 mm above the cementoenamel junction to produce flat dentin surfaces. Ceramic and composite CAD/CAM blocks, size 14, were sectioned into slices of 3 mm thick. Before bonding, CAD/CAM block surfaces were treated according to the manufacturer′s instructions. Groups were created based on the adhesive strategy used: Group 1 (GI) - conventional resin cement + total-etch adhesive system, Group 2 (GII) - conventional resin cement + self-etch adhesive system, and Group 3 (GIII) - self-adhesive resin cement with no adhesive. Bonded specimens were stored in 100% humidity for 24h at 37C, and then sectioned with a slow-speed diamond saw to obtain 1 mm × 1 mm × 6 mm microsticks. Microtensile testing was then conducted using a microtensile tester. μTBS values were expressed in MPa and analyzed by one-way ANOVA with post hoc (Tukey) test at the 5% significance level.
Results: Mean values and standard deviations of μTBS (MPa) were 17.68 (±2.71) for GI/ceramic; 17.62 (±3.99) for GI/composite; 13.61 (±6.92) for GII/composite; 12.22 (±4.24) for GII/ceramic; 7.47 (±2.29) for GIII/composite; and 6.48 (±3.10) for GIII/ceramic; ANOVA indicated significant differences among the adhesive modality and block interaction (P < 0.05), and no significant differences among blocks only, except between GI and GII/ceramic. Bond strength of GIII was consistently lower (P < 0.05) than GI and GII groups, regardless the block used.
Conclusion: Cementation of CAD/CAM restorations, either composite or ceramic, can be significantly affected by different adhesive strategies used. |
| first_indexed | 2024-12-10T03:55:37Z |
| format | Article |
| id | doaj.art-847ce14a1b5b459c9da5755fa092709c |
| institution | Directory Open Access Journal |
| issn | 1735-3327 2008-0255 |
| language | English |
| last_indexed | 2024-12-10T03:55:37Z |
| publishDate | 2016-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Dental Research Journal |
| spelling | doaj.art-847ce14a1b5b459c9da5755fa092709c2022-12-22T02:03:07ZengWolters Kluwer Medknow PublicationsDental Research Journal1735-33272008-02552016-01-0113211712310.4103/1735-3327.178196Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentinRenato RopertoAnna AkkusOzan AkkusLisa LangManoel Damiao Sousa-NetoSorin TeichThiago Soares PortoBackground: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies. Materials and Methods: In this in vitro study, 30 crowns of sound freshly extracted human molars were sectioned horizontally 3 mm above the cementoenamel junction to produce flat dentin surfaces. Ceramic and composite CAD/CAM blocks, size 14, were sectioned into slices of 3 mm thick. Before bonding, CAD/CAM block surfaces were treated according to the manufacturer′s instructions. Groups were created based on the adhesive strategy used: Group 1 (GI) - conventional resin cement + total-etch adhesive system, Group 2 (GII) - conventional resin cement + self-etch adhesive system, and Group 3 (GIII) - self-adhesive resin cement with no adhesive. Bonded specimens were stored in 100% humidity for 24h at 37C, and then sectioned with a slow-speed diamond saw to obtain 1 mm × 1 mm × 6 mm microsticks. Microtensile testing was then conducted using a microtensile tester. μTBS values were expressed in MPa and analyzed by one-way ANOVA with post hoc (Tukey) test at the 5% significance level. Results: Mean values and standard deviations of μTBS (MPa) were 17.68 (±2.71) for GI/ceramic; 17.62 (±3.99) for GI/composite; 13.61 (±6.92) for GII/composite; 12.22 (±4.24) for GII/ceramic; 7.47 (±2.29) for GIII/composite; and 6.48 (±3.10) for GIII/ceramic; ANOVA indicated significant differences among the adhesive modality and block interaction (P < 0.05), and no significant differences among blocks only, except between GI and GII/ceramic. Bond strength of GIII was consistently lower (P < 0.05) than GI and GII groups, regardless the block used. Conclusion: Cementation of CAD/CAM restorations, either composite or ceramic, can be significantly affected by different adhesive strategies used.http://www.drjjournal.net/article.asp?issn=1735-3327;year=2016;volume=13;issue=2;spage=117;epage=123;aulast=RopertoAdhesionceramiccomposite resincomputer aided design/computer aided manufacturing |
| spellingShingle | Renato Roperto Anna Akkus Ozan Akkus Lisa Lang Manoel Damiao Sousa-Neto Sorin Teich Thiago Soares Porto Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin Dental Research Journal Adhesion ceramic composite resin computer aided design/computer aided manufacturing |
| title | Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin |
| title_full | Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin |
| title_fullStr | Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin |
| title_full_unstemmed | Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin |
| title_short | Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin |
| title_sort | effect of different adhesive strategies on microtensile bond strength of computer aided design computer aided manufacturing blocks bonded to dentin |
| topic | Adhesion ceramic composite resin computer aided design/computer aided manufacturing |
| url | http://www.drjjournal.net/article.asp?issn=1735-3327;year=2016;volume=13;issue=2;spage=117;epage=123;aulast=Roperto |
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