Comparative SEM and TEM Examination of the Ultrastructure of the Resin-Dentin Interdiffusion Zone

Meerbeek, Bart Van; Dhem, Antoine; Goret-Nicaise, M.; Braem, M; Lambrechts, Paul; Vanherle, Guido

doi:10.1177/00220345930720020501

Cited by 275 publications

(165 citation statements)

References 12 publications

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“…[2][3][4][5][6][7]20 However, there was no hybrid layer detected on the SEM image of LB. For examination of the hybrid layer using SEM and TEM, pretreatment such as etching or decalcification is often employed to make the microstructure more prominent by changing the morphology 2,6,7,21,22 . In the present study, such pretreatment was not performed because a flat surface is necessary to obtain precise EDS results.…”

Section: Discussionmentioning

confidence: 99%

“…In current procedures to achieve bonding between resin and dentin, it is essential to form an interpenetrating network of polymer and dentinal collagen at the bonding interface; namely, a hybrid layer. 1,2 This hybrid layer is formed by a three step chemical surface treatment composed of etching, priming, and bonding. 1,2 In etching treatment, an acidic liquid removes minerals at the dentin surface and exposes the matrix collagen network.…”

mentioning

confidence: 99%

“…1,2 This hybrid layer is formed by a three step chemical surface treatment composed of etching, priming, and bonding. 1,2 In etching treatment, an acidic liquid removes minerals at the dentin surface and exposes the matrix collagen network. In priming treatment, a hydrophilic monomer is infused into the collagen network.…”

mentioning

confidence: 99%

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Resin–Dentin Bonding Interface After Photochemical Surface Treatment

Tonami

Sano²,

Ichinose³

et al. 2015

Photomedicine and Laser Surgery

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Objective: The aim of this study is to elucidate the structure of the resin-dentin interface formed by photochemical dentin treatment using an argon fluoride (ArF) excimer laser. Background data: The ArF excimer laser processes material by photochemical reaction without generating heat, while also providing surface conditioning that enhances material adhesion. In the case of bonding between resin and dentin, we demonstrated in a previous study that laser etching using an ArF excimer laser produced bonding strength comparable to that of the traditional bonding process; however, conditions of the bonding interface have not been fully investigated. Methods: A dentin surface was irradiated in air with an ArF excimer laser followed by bonding treatment. Cross sections were observed under light microscope, transmission electron microscope (TEM), and scanning electron microscope, then analyzed using an energy dispersive X-ray spectroscope (EDS): EDS line profiles of the elements C, O, Si, Cl, P, and Ca at the resin-dentin interface were obtained. Results: The density of C in resin decreased as it approached the interface, reaching its lowest level within the dentin at a depth of 2 lm from the resin-dentin interface on EDS. There was no hybrid layer observed at the interface on TEM. Therefore, it was suggested that the resin monomer infiltrated into the microspaces produced on the dentin surface by laser abrasion. Conclusions: The monomer infiltration without hybrid layer is thought to be the adhesion mechanism after laser etching. Therefore, the photochemical processes at the bonding interface achieved using the ArF excimer laser has great potential to be developed into a new bonding system in dentistry.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Resin–Dentin Bonding Interface After Photochemical Surface Treatment

Tonami

Sano²,

Ichinose³

et al. 2015

Photomedicine and Laser Surgery

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“…The inter-relationship between collagen fibers and the dentinal matrix undergoes changes with demineralization 32 and aging. 33 Thus, the contribution of a frontal and/or posterior FPZ to energy dissipation during the fracture of dentin may not remain constant over the life of a tooth.…”

Section: Discussionmentioning

confidence: 99%

Fatigue and fracture of bovine dentin

Arola

Rouland

Zhang

2002

Experimental Mechanics

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ABSTRACT-In this paper, the fatigue and fracture properties of bovine dentin are evaluated using in vitro experimental analyses. Double cantilever beam (DCB) specimens were prepared from bovine maxillary molars and subjected to zeroto-tension cyclic loads. The fatigue crack growth rate was evaluated as a function of the dentin tubule orientation using the Paris law. Wedge-loaded DCB specimens were also prepared and subjected to monotonic opening loads. Moiré interferometry was used to acquire the in-plane displacement field during stable crack growth, and the instantaneous wedge load and crack length were acquired to evaluate the crack growth resistance and crack tip opening displacement (CTOD) with crack extension. The rate of fatigue crack growth was generally larger for crack propagation occurring perpendicular to the dentin tubules. The Moiré fringe fields documented during monotonic crack growth exhibited non-linear deformation occurring within a confined region adjacent to the crack tip. Both the wedge load and CTOD response provided evidence that a fracture process zone contributes to energy dissipation during crack extension and that dentin exhibits a rising R-curve behavior. Results from this preliminary investigation are being used as a guide for an evaluation of the fatigue and fracture properties of human dentin.

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“…Numerous studies have reported the structure of the ABRZ [9][10][11] . The ultrastructure of the HL and ABRZ have been revealed using various treatments and analyzed using both scanning and transmission electron microscopy [12][13][14] . When considering bond degradation, the hydrolytic effects of water on adhesives is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

Guan

Takagaki

Matsui

et al. 2016

Dental Materials Journal

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Dentin bonding durability of recently introduced dental adhesives: Clearfil SE Bond 2 (SE2), Optibond XTR (XTR), and Scotchbond Universal (SBU) was investigated using Weibull analysis as well as analysis of the micromorphological features of the acid-base resistant zone (ABRZ) created for the adhesives. The bonding procedures of SBU were divided into three subgroups: self-etch (SBS), phosphoric acid (PA) etching on moist (SBM) or dry dentin (SBD). All groups were thermocycled for 0, 5,000 and 10,000 cycles followed by microtensile bond strength testing. Acid-base challenge was undertaken before SEM and TEM observations of the adhesive interface. The etch-and-rinse method with SBU (SBM and SBD) created inferior interfaces on the dentin surface which resulted in reduced bond durability. ABRZ formation was detected with the self-etch adhesive systems; SE2, XTR and SBS. In the PA etching protocols of SBM and SBD, a thick hybrid layer but no ABRZ was detected, which might affect dentin bond durability.

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Comparative SEM and TEM Examination of the Ultrastructure of the Resin-Dentin Interdiffusion Zone

Cited by 275 publications

References 12 publications

Resin–Dentin Bonding Interface After Photochemical Surface Treatment

Resin–Dentin Bonding Interface After Photochemical Surface Treatment

Fatigue and fracture of bovine dentin

Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

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