Chlorhexidine diminishes the loss of bond strength over time under simulated pulpal pressure and thermo-mechanical stressing

Campos, Edson Alves de; Correr, Gisele Maria; Leonardi, Denise Piotto; Barato-Filho, Flares; Gonzaga, Carla Castiglia; Zielak, João César

doi:10.1016/j.jdent.2008.10.003

Cited by 86 publications

(89 citation statements)

References 29 publications

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“…12,16 However, a decrease in the diffusion gradient of the resin monomers results in a layer of denuded collagen at the base of the hybrid layer. 9,12,14,16,17 These limitations of adhesive systems lead to the disarrangement of the collagen fiber network, which causes degradation by activating host-derived enzymes, such as MMPs, by acid contact and water uptake. The longevity of the adhesive/dentin bond is directly related to the quality of the formed polymer 18 and the integrity of the uncovered collagen.…”

Section: Discussionmentioning

confidence: 99%

Influence of chlorhexidine application on longitudinal adhesive bond strength in deciduous teeth

et al. 2011

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Section: Discussionmentioning

confidence: 99%

Influence of chlorhexidine application on longitudinal adhesive bond strength in deciduous teeth

et al. 2011

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“…74,85,86,87 The use of 2% CHX solution as an effective and nonspecific protease inhibitor primer, after acid-etching, is attractive from a clinical point of view, since it is already used in other oral health situations as an antimicrobial agent. 88 Compared to control, aged CHX-treated dentin relates to higher bond strength values 73,74,77,78,79,80,89,90,91,92 which are interestingly equivalent to each other in most of the immediate evaluations. 93 Especially when two step etch-and-rinse adhesives are used, reduction of bond strength values for conventionally treated dentin over one to two years is of approximately 50%; when CHX is applied after acid etching, total reduction is around 20% 72 to 84.9%.…”

Section: Enzymatic Inhibitorsmentioning

confidence: 93%

Bonding efficiency and durability: current possibilities

et al. 2017

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Bonding plays a major role in dentistry nowadays. Dental adhesives are used in association with composites to solve many restorative issues. However, the wide variety of bonding agents currently available makes it difficult for clinicians to choose the best alternative in terms of material and technique, especially when different clinical situations are considered. Moreover, although bonding agents allow for a more conservative restorative approach, achieving a durable adhesive interface remains a matter of concern, and this mainly due to degradation of the bonding complex in the challenging oral environment. This review aims to present strategies that are being used or those still in development which may help to prevent degradation. It is fundamental that professionals are aware of these strategies to counteract degradation as much as possible. None of them are efficient to completely solve this problem, but they certainly represent reasonable alternatives to increase the lifetime of adhesive restorations.

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“…This was clearly shown with SB and CSE, for which lTBS values were significantly decreased after six months of storage. Campos and others 24 agreed with these findings; however, they used thermo-mechanical stressing in addition to the intrapulpal pressure simulation. The decrease in bonding effectiveness of such adhesives may be caused by the degradation of interface components via hydrolysis (mainly resin and/or collagen).…”

Section: Discussionmentioning

confidence: 72%

“…2 In etch-and-rinse adhesive systems, there is a discrepancy between the depth of demineralization and resin infiltration, which leads to a zone of hydroxyapatite-depleted collagen fibrils that are left exposed and unsupported. 24,25 The mineralized dentin matrix contains many endogenous enzymes (for example, alkaline phosphatase and metalloproteases) that may be released and activated during etching or more slowly during water storage. These enzymes could attack the denuded collagen, 26 the ester bonds of resins, 27 or both.…”

Section: Discussionmentioning

confidence: 99%

Bond Durability of Adhesives Containing Modified-monomer With/Without-fluoride After Aging in Artificial Saliva and Under Intrapulpal Pressure Simulation

El-Deeb¹,

Sherbiney

Mobarak

2013

Operative Dentistry

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Adhesives with hydrolytically stable modified monomers could be a promising approach to enhance bonding durability. SUMMARYObjective: To evaluate the dentin bond strength durability of adhesives containing modified-monomer with/without-fluoride after storage in artificial saliva and under intrapulpal pressure simulation (IPPS).Materials and Methods: The occlusal enamel of 48 freshly extracted teeth was trimmed to expose midcoronal dentin. Roots were sectioned to expose the pulp chamber and to connect the specimens to the pulpal-pressure assembly. Specimens were assigned into four groups (n=12) according to adhesive system utilized: a two-step etch-and-rinse adhesive system (SB, Adper Single Bond 2, 3M ESPE), a two-step self-etch adhesive system (CSE, Clearfil SE Bond, Kuraray Medical Inc), and two single-step self-etch adhesives with the same modified monomer (bis-acrylamide)-one with fluoride (AOF, AdheSE One F, Ivoclar-Vivadent) and the other without (AO, AdheSE One, Ivoclar-Vivadent). Bonding was carried out while the specimens were subjected to 15-mm Hg IPPS. Resin composite (Valux Plus, 3M ESPE) buildups were made. After curing, specimens were aged in artificial saliva and under 20-mm Hg IPPS at 378C in a specially constructed incubator either for 24 hours or six months prior to testing. Bonded specimens (n=6/group) were sectioned into sticks (n=24/ group) with a cross section of 0.9 6 0.01 mm 2 and subjected to microtensile bond strength (lTBS) testing using a universal testing machine. Data were statistically analyzed using two-way analysis of variance (ANOVA) with repeated measures, one-way ANOVA tests, and a t-test (p,0.05). Failure modes were determined using a scanning electron microscope.Results: The lTBS values of SB and CSE fell significantly after six-month storage in artificial saliva and under IPPS, yet these values remained significantly higher than those for the other two adhesives with modified monomers. There was no significant difference in the bond strength values between fluoridecontaining and fluoride-free self-etch adhesive systems (AOF and AO) after 24 hours or six months. Modes of failure were mainly adhesive and mixed.Conclusions: Based on the results of this study, 1) Fluoride addition did not affect dentin bond durability; and 2) despite the fact that the single-step adhesive system with modified monomer showed stability, bond strengths associated with these systems remained lower than those of multistep adhesive systems.

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Chlorhexidine diminishes the loss of bond strength over time under simulated pulpal pressure and thermo-mechanical stressing

Cited by 86 publications

References 29 publications

Influence of chlorhexidine application on longitudinal adhesive bond strength in deciduous teeth

Influence of chlorhexidine application on longitudinal adhesive bond strength in deciduous teeth

Bonding efficiency and durability: current possibilities

Bond Durability of Adhesives Containing Modified-monomer With/Without-fluoride After Aging in Artificial Saliva and Under Intrapulpal Pressure Simulation

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