Restorative Dentistry & Endodontics

Microtensile bond strength of CAD/CAM-fabricated polymer-ceramics to different adhesive resin cements: Leyla Sadighpour, Farideh Geramipanah, Zahra Ghasri, Mehrnoosh Neshatian; Restor Dent Endod 2018;43(4):e40. Published online September 3, 2018; DOI: https://doi.org/10.5395/rde.2018.43.e40

Objectives

This study evaluated the microtensile bond strength (µTBS) of polymer-ceramic and indirect composite resin with 3 classes of resin cements.

Materials and Methods

Two computer-aided design/computer-aided manufacturing (CAD/CAM)-fabricated polymer-ceramics (Enamic [ENA; Vita] and Lava Ultimate [LAV; 3M ESPE]) and a laboratory indirect composite resin (Gradia [GRA; GC Corp.]) were equally divided into 6 groups (n = 18) with 3 classes of resin cements: Variolink N (VAR; Vivadent), RelyX U200 (RXU; 3M ESPE), and Panavia F2 (PAN; Kuraray). The μTBS values were compared between groups by 2-way analysis of variance and the post hoc Tamhane test (α = 0.05).

Results

Restorative materials and resin cements significantly influenced µTBS (p < 0.05). In the GRA group, the highest μTBS was found with RXU (27.40 ± 5.39 N) and the lowest with VAR (13.54 ± 6.04 N) (p < 0.05). Similar trends were observed in the ENA group. In the LAV group, the highest μTBS was observed with VAR (27.45 ± 5.84 N) and the lowest with PAN (10.67 ± 4.37 N) (p < 0.05). PAN had comparable results to those of ENA and GRA, whereas the μTBS values were significantly lower with LAV (p = 0.001). The highest bond strength of RXU was found with GRA (27.40 ± 5.39 N, p = 0.001). PAN showed the lowest µTBS with LAV (10.67 ± 4.37 N; p < 0.001).

Conclusions

When applied according to the manufacturers' recommendations, the µTBS of polymer-ceramic CAD/CAM materials and indirect composites is influenced by the luting cements.

Citations

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Effect of hydrofluoric acid and self-etch ceramic primers on the flexural strength and fatigue resistance of glass ceramics: A systematic review and meta-analysis of in vitro studies
Paulo Matias Moreira, Gabriela Luiza Moreira Carvalho, Rodrigo de Castro Albuquerque, Carolina Bosso André
Japanese Dental Science Review.2024; 60: 198. CrossRef
Light transmittance through resin-matrix composite onlays adhered to resin-matrix cements or flowable composites
Rita Fidalgo-Pereira, Susana O. Catarino, Óscar Carvalho, Nélio Veiga, Orlanda Torres, Annabel Braem, Júlio C.M. Souza
Journal of the Mechanical Behavior of Biomedical Materials.2024; 151: 106353. CrossRef
Effect of thermocycling on the mechanical properties of permanent composite-based CAD-CAM restorative materials produced by additive and subtractive manufacturing techniques
Tuğba Temizci, Hatice Nalan Bozoğulları
BMC Oral Health.2024;[Epub] CrossRef
Effect of different surface treatments on resin-matrix CAD/CAM ceramics bonding to dentin: in vitro study
Hanan Fathy, Hamdi H. Hamama, Noha El-Wassefy, Salah H. Mahmoud
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Jiao ZHANG, Qing YU
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F Dalla-Nora, LF Guilardi, CP Zucuni, LF Valandro, MP Rippe
Operative Dentistry.2021; 46(3): 316. CrossRef

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Microtensile bond strength of self-etching and self-adhesive resin cements to dentin and indirect composite resin: Jae-Gu Park, Young-Gon Cho, Il-Sin Kim; J Korean Acad Conserv Dent 2010;35(2):106-115. Published online March 31, 2010; DOI: https://doi.org/10.5395/JKACD.2010.35.2.106

Abstract PDF PubReader ePub

The purpose of this study was to evaluate the microtensile bond strength (µTBS), failure modes and bonding interfaces of self-etching and three self-adhesive resin cements to dentin and indirect composite resin.

Cylindrical composite blocks (Tescera, Bisco Inc.) were luted with resin cements (PA: Panavia F 2.0, Kuraray Medical Inc., RE: RelyX Unicem Clicker, 3M ESPE., MA: Maxem, Kerr Co., BI: BisCem, Bisco Inc.) on the prepared occlusal dentin surfaces of 20 extracted molars. After storage in distilled water for 24 h, 1.0 mm × 1.0 mm composite-dentin beams were prepared. µTBS was tested at a cross-head speed of 0.5 mm/min. Data were analyzed with one-way ANOVA and Tukey's HSD test. Dentin sides of all fractured specimens and interfaces of resin cements-dentin or resin cements-composite were examined at FE-SEM (Field Emission-Scanning Electron Microscope).

In conclusion, PA and RE showed higher bond strength and closer adaptation than MA and BI when indirect composite blocks were luted to dentin using a self-etching and three self-adhesive resin cements.

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Effect of film thickness of resin cement on bonding efficiency in indirect composite restoration: Sang-Hyuck Lee, Gi-Woon Choi, Kyung-Kyu Choi; J Korean Acad Conserv Dent 2010;35(2):69-79. Published online March 31, 2010; DOI: https://doi.org/10.5395/JKACD.2010.35.2.069

Abstract PDF PubReader ePub

The purpose of this study was to evaluate the effect of film thickness of various resin cements on bonding efficiency in indirect composite restoration by measurement of microtensile bond strength, polymerization shrinkage, flexural strength and modulus, fractographic FE-SEM analysis. Experimental groups were divided according to film thickness (< 50 µm-control, 50 µm-T50, 100 µm-T100, 150 µm-T150) using composite-based resin cements (Variolink II, Duo-Link) and adhesive-based resin cements (Panavia F, Rely X Unicem). The data was analyzed using ANOVA and Duncan's multiple comparison test (p < 0.05).

The results were as follows;

Variolink II showed higher microtensile bond strength than that of adhesive-based resin cements in all film thickness (p < 0.05) but Duo-Link did not show significant difference except control group (p < 0.05).

Microtensile bond strength of composite-based resin cements were decreased significantly according to increasing film thickness (p < 0.05) but adhesive-based resin cements did not show significant difference among film thickness (p > 0.05).

Panavia F showed significantly lower polymerization shrinkage than other resin cements (p < 0.05).

Composite-based resin cements showed significantly higher flexural strength and modulus than adhesive-based resin cements (p < 0.05).

FE-SEM examination showed uniform adhesive layer and well developed resin tags in composite-based resin cements but unclear adhesive layer and poorly developed resin tags in adhesive-based resin cements. In debonded surface examination, composite-based resin cements showed mixed failures but adhesive-based resin cements showed adhesive failures.

Citations

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Full mapping tensile bond strength of luting in search for differences due to centripetal curing shrinkage
José C. de la Macorra, Beatriz Romero
Dental Materials.2022; 38(4): e69. CrossRef

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The effect of bonding resin on bond strength of dual-cure resin cements: Duck-Su Kim, Sang-Hyuk Park, Gi-Woon Choi, Kyung-Kyu Choi; J Korean Acad Conserv Dent 2007;32(5):426-436. Published online September 30, 2007; DOI: https://doi.org/10.5395/JKACD.2007.32.5.426

Abstract PDF PubReader ePub

The objective of this study is to evaluate the effect of an additional application of bonding resin on the bond strength of resin luting cements in both the light-cure (LC) and self-cure (SC) modes by means of the µTBS tests.

Three combinations of One-Step Plus with Choice, Single Bond with Rely X ARC, and One-Up Bond F with Bistite II were used. D/E resin and Pre-Bond resin were used for the additional application. Twelve experimental groups were made. Three mandibular 3^rd molars were used in each group. Indirect composite blocks were cemented on the tooth surface. 1 × 1 mm² dentin-composite beam for µTBS testing were made and tested.

When total-etching dentin adhesives were used, an additional application of the bonding resin increased the bond strength (P < 0.05). However, this additional application didn't influence the bond strength of self-etching dentin adhesives (P > 0.05).

In conclusion, the results suggest that an additional application of the bonding resin increases bond strength and enhances quality of bonding when using total-etching dentin adhesives.

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Sae-Hee Han, Young-Gon Cho
Journal of Korean Academy of Conservative Dentistry.2009; 34(3): 223. CrossRef

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