Interfacial ultramorphology evaluation of resin luting cements to dentin: A correlative scanning electron microscopy and transmission electron microscopy analysis

Aguiar, Thaiane Rodrigues; Vermelho, Paulo Moreira; André, Carolina Bosso; Giannini, Marcelo

doi:10.1002/jemt.22290

Cited by 14 publications

(12 citation statements)

References 21 publications

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“…Due to the use of a bonding system, the luting procedure with conventional resin cements form the interlocking structure known as hybrid layer, presenting good bonding and longevity (4). However, in spite of being extensively used nowadays, the self-adhesive resin cements are still progressing and only one brand has been studied more extensively (1).…”

Section: Introductionmentioning

confidence: 99%

“…However, in spite of being extensively used nowadays, the self-adhesive resin cements are still progressing and only one brand has been studied more extensively (1). Furthermore, no hybridization was detected for the self-adhesive resin cements (4) and the bond strength was lower compared to the conventional resin cements (5,6). Thus, more studies would bring important information regarding its bond capability to dental substrate, especially in some issues such as bond strength to dentin after the application of different instruments to finish the tooth preparation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Dentin Preparation Mode on the Bond Strength Between Human Dentin and Different Resin Cements

et al. 2018

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The aim was to evaluate the influence of different dentin preparation mode in the smear layer characteristics (SL), hybrid layer (HL), and microtensile bond strength (µTBS) to dentin with two resin cements. The occlusal dentin of 120 third molars was exposed. The teeth were divided into 4 groups (n=30) according to the dentin preparation mode: 1- fine grain diamond bur; 2- coarse grain diamond bur; 3- multi laminate carbide steel bur; and, 4- ultrasonic CV Dentus diamond bur. Each treated dentin group was divided into 2 sub-groups (n=15) according to the resin cement: (1) RelyX U200 and (2) RelyX ARC. Resin composite blocks were cemented on dentin. After storage at 37o C for 24 h, beams with a cross section area of 1.0 mm2 were obtained, and tested in a universal testing machine at a crosshead speed of 0.5 mm/min. Two additional teeth for each sub-group were prepared to analyze the SL and HL on a scanning electron microscopy. According to Kruskal-Wallis test and Dunn tests, there was no significant difference in µTBS among the rotary instruments within each resin cement group. RelyX ARC obtained higher µTBS values compared to RelyX U200 (p<0.05). RelyX ARC formed evident HL, which was not observed for RelyX U200. The dentin mode preparation did not influence the µTBS of the resin cements. The SL was different for all instruments. The cementing agent is more determinant in the hybrid layer formation and bond strength to dentin than the instruments applied on dentin.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Dentin Preparation Mode on the Bond Strength Between Human Dentin and Different Resin Cements

et al. 2018

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“…While morphological imaging techniques have demonstrated a thin hybrid layer for self-etch cements, no such formation was observed for self-adhesive cements, despite the intimate adaptation between the cement and the dental substrate. [13][14][15][16][17][18][19] De Munck et al, 19 with the use of TEM analysis, observed an irregular interaction zone at the interface between dentin and a self-adhesive cement, ranging from 0 up to 2 μm.…”

Section: Figmentioning

confidence: 99%

“…12 However, several studies based on different morphological imaging methods have been unable to demonstrate evidence of dentin decalcification achieved by the self-adhesive resin cements investigated and their infiltration into dentin. [13][14][15][16] Although studies have observed an intimate adaptation of self-adhesive resin cements to dentin, no hybrid layer or resin tag formation could be identified. [17][18][19] An established hybridization is typically observed with the use of total-etch or self-etch cements, whereas more superficial physical interactions and possible involvement of chemical reactions between the material and dental hard tissues have been found with self-adhesive cements.…”

Section: Introductionmentioning

confidence: 99%

Analytical method to estimate resin cement diffusion into dentin

et al. 2016

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Abstract. This study analyzed the diffusion of two resin luting agents (resin cements) into dentin, with the aim of presenting an analytical method for estimating the thickness of the diffusion zone. Class V cavities were prepared in the buccal and lingual surfaces of molars (n ¼ 9). Indirect composite inlays were luted into the cavities with either a self-adhesive or a self-etch resin cement. The teeth were sectioned bucco-lingually and the cementdentin interface was analyzed by using micro-Raman spectroscopy (MRS) and scanning electron microscopy. Evolution of peak intensities of the Raman bands, collected from the functional groups corresponding to the resin monomer (C─O─C, 1113 cm −1 ) present in the cements, and the mineral content (P─O, 961 cm −1 ) in dentin were sigmoid shaped functions. A Boltzmann function (BF) was then fitted to the peaks encountered at 1113 cm −1 to estimate the resin cement diffusion into dentin. The BF identified a resin cement-dentin diffusion zone of 1.8 AE 0.4 μm for the self-adhesive cement and 2.5 AE 0.3 μm for the self-etch cement. This analysis allowed the authors to estimate the diffusion of the resin cements into the dentin. Fitting the MRS data to the BF contributed to and is relevant for future studies of the adhesive interface. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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“…It was suggested dental substrate treatment that can enhance both the hybrid layer and bond strength results. Furthermore, it is not yet clear whether enamel conditioning with phosphoric acid is clinically required before luting with self-adhesive cements 3,[6][7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Ultramorphology of pre-treated adhesive interfaces between self-adhesive resin cement and tooth structures

Pereira

Daleprane

Miranda

et al. 2017

Rev. odontol. UNESP

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Introduction Convencional resin cements can be used in combination with a total-etch system in a conventional mode or as self-adhesive resin cements. The latter are less technique sensitive and able to bond to dental tissues without previous treatment or adhesive layer and requires only a single step to be applied to dental structures. Objective To compare qualitatively the adhesive interfaces of two self-adhesive resin cements and one conventional resin cement after different tooth surface treatments under scanning electron microscopy. Material and method 42 crowns of bovine incisors were sectioned and flattened exposing enamel (E) or dentine (D) substrate. Subgroups were defined according to conditioning type and time: E1—no treatment, E2—37% phosphoric acid for 15 seconds, E3—37% phosphoric acid for 30 seconds; D1—no treatment, D2—37% phosphoric acid for 5 seconds; D3—11.5% polyacrylic acid for 15 seconds. A resin block was bonded to each substrate using the self-adhesive resin cements RelyX U100 (3M ESPE) and RelyX U200 (3M ESPE). As a reference hybrid layer, six resin blocks were luted with RelyX ARC and Scotchbond Multi-Purpose adhesive system (3M ESPE) (enamel—EA; dentine—DA). After aging for 7 days in a moist environment at 37±1°C, samples were prepared for microscopy analysis. Result and Discussion In the ARC specimens, there was hybrid layer formation in both EA and DA. U100 E1 showed gaps at the adhesive interface, while E2 and E3 showed interaction for both self-adhesive cements. There was superficial interaction with bothU100 and U200 in D1, while in D2 and D3, resin tags were only observed in the case of U100. Conclusion It was concluded that substrate conditioning may enhance the interaction between self-adhesive resin cements and dental tissues, although this is not the case for RelyX U200 and dentine.

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Interfacial ultramorphology evaluation of resin luting cements to dentin: A correlative scanning electron microscopy and transmission electron microscopy analysis

Cited by 14 publications

References 21 publications

Effect of Dentin Preparation Mode on the Bond Strength Between Human Dentin and Different Resin Cements

Effect of Dentin Preparation Mode on the Bond Strength Between Human Dentin and Different Resin Cements

Analytical method to estimate resin cement diffusion into dentin

Ultramorphology of pre-treated adhesive interfaces between self-adhesive resin cement and tooth structures

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