Effect of antioxidants on push-out bond strength of hydrogen peroxide treated glass fiber posts bonded with two types of resin cement

Khoroushi, Maryam; Mazaheri, Hamid; Tarighi, Pardis; Samimi, Pouran; Khalighinejad, Navid

doi:10.5395/rde.2014.39.4.303

Cited by 12 publications

(14 citation statements)

References 28 publications

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“…Use of an antioxidant agent, such as rosmarinic acid, hesperidin, or sodium ascorbate, can invalidate the negative effects of oxygen residuals through scavenging mechanisms. Khoroushi et al 25 evaluated the effects of antioxidant agents on hydrogen-peroxide-etched fiber posts. When cemented using a self-adhesive resin cement rather than conventional resin cement, fiber posts treated with hydrogen peroxide and subsequently with antioxidant agent demonstrated significantly enhanced bond strength.…”

Section: Discussionmentioning

confidence: 99%

Effects of hydrogen peroxide pretreatment and heat activation of silane on the shear bond strength of fiber-reinforced composite posts to resin cement

et al. 2016

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PURPOSETo evaluate the effects of hydrogen peroxide pretreatment and heat activation of silane on the shear bond strength of fiber-reinforced composite posts to resin cement.MATERIALS AND METHODSThe specimens were prepared to evaluate the bond strength of epoxy resin-based fiber posts (D.T. Light-Post) to dual-curing resin cement (RelyX U200). The specimens were divided into four groups (n=18) according to different surface treatments: group 1, no treatment; group 2, silanization; group 3, silanization after hydrogen peroxide etching; group 4, silanization with warm drying at 80℃ after hydrogen peroxide etching. After storage of the specimens in distilled water at 37℃ for 24 hours, the shear bond strength (in MPa) between the fiber post and resin cement was measured using a universal testing machine. The fractured surface of the fiber post was examined using scanning electron microscopy. Data were analyzed using one-way ANOVA and post-hoc analysis with Tukey's HSD test (α=0.05).RESULTSSilanization of the fiber post (Group 2) significantly increased the bond strength in comparison with the non treated control (Group 1) (P<.05). Heat drying after silanization also significantly increased the bond strength (Group 3 and 4) (P<.05). However, no effect was determined for hydrogen peroxide etching before applying silane agent (Group 2 and 3) (P>.05).CONCLUSIONFiber post silanization and subsequent heat treatment (80℃) with warm air blower can be beneficial in clinical post cementation. However, hydrogen peroxide etching prior to silanization was not effective in this study.

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Section: Discussionmentioning

confidence: 99%

Effects of hydrogen peroxide pretreatment and heat activation of silane on the shear bond strength of fiber-reinforced composite posts to resin cement

et al. 2016

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“…It was observed in that study that most predominant type of failure was mixed failure followed by adhesive type of failure at cementdentin interface as reported by studies done by (Maryam Khoroushi et al 2014) [23]. The mixed type of failure is an indication of bond strength reinforcement between the fiber post and resin cement and high push out stresses needed to cause fracture of the post and cement layer [24].…”

Section: Discussionmentioning

confidence: 87%

Effect of different root dentin pretreatment protocols on the bond strength of fiber posts cemented with core buildup material

Naeem

Zohdy

Morsi

2019

BDS

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Objective: The purpose of the study was to evaluate the push out bond strength of fiber posts -after cementaion with core build up material and dentin pretreatment using different adhesive protocols- in different root regions. Material and Methods: 28 endodonticaly treated human premolars were divided into 4 groups. The post spaces were treated with 1 of 4 different dentin bonding protocols: total etch light cured adhesive, solobond m; total etch dual cured adhesive, Excite f DSC; self-etching light cured adhesive, single bond universal; or self-etching dual cured adhesive, futura bond dc. Fiber posts, were luted with dual cured core material. The roots were cut into 2-mm-thick sections, in cervical, middle, and apical regions. Push-out tests were performed with a universal testing machine, and bond strength values (MPa) were calculated. Data were analyzed with 1- and 2-way analysis of variance and Tukey multiple comparison tests (a=.05). Failure modes were examined under stereo microscope. Results: The highest mean bond strength values were obtained for self-etch dual cured adhesive, (9.69 MPa). The Total etch light cured adhesive (2.81 MPa) showed the lowest bond strength. Self-etch light-polymerized and total etch dual-polymerized adhesives provided similar bond strengths (5.37, 5.72 respectively). The regional bond strength values were reduced significantly in apical post space (P<0.01). The most predominant failure type was mixed failure followed by adhesive failure. Conclusion: Dentin pretreatment using self-etch dual cured adhesives prior to fiber posts cementation offers a high bond strength. While using total-etch light cured adhesives is not recommended due to the low bonding quality. KeywordsDentin; Bond strength; Fiber posts; Core buildup material; Adhesive protocols; Pretreatment.

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“…The application of ascorbic acid is dependent on the increasing duration of exposure to the antioxidant [124]. Other examples are the use of ethanol [70,86], antioxidants such hesperidin, sodium ascorbate or rosmarinic acid [123]. Recently, a study of use of polidopamina at the post surface was found to be effective in improving the bond strength between resin cements and fiber posts without damaging the surface of the posts [57].…”

Section: Effect Of Surface Treatment Of Glass Fiber Posts On Bond Strmentioning

confidence: 99%

“…Highly cross-linked epoxy resins with high degree of conversion constitute the main [86,[121][122][123][124]. The application of ascorbic acid is dependent on the increasing duration of exposure to the antioxidant [124].…”

Section: Effect Of Surface Treatment Of Glass Fiber Posts On Bond Strmentioning

confidence: 99%

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Test methods for bond strength of glass fiber posts to dentin: A review

Santos

Carlo

Barros

2016

The Journal of Adhesion

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In this paper, a review of the test methods for bond strength of glass fiber posts to dentin is presented. The main variables that influence the bond strength tests are related to substrate, to specimen properties, specimen preparation and test methodology. The impact of these variables on the test outcome is analyzed. The search was performed on studies published between 2007 and 2015. Most of the tests carried out, in the literature, were the push-out (75%), pull-out (13%) and microtensile (11,9%) tests, showing an inversion compared to the results found in studies published between 2005 and 2010, when push-out test was used in a proportion of 2% and microtensile test in a proportion of 67%. The push-out test emerged as a practical tool for evaluating the interfacial shear strength between fiber post and root canal walls.Fiber posts have been widely used in endodontically treated teeth in the last years. One of the advantages of using fiber posts is the use of adhesive bonding technique, which requires minimal intervention on the dentin surface. In addition, fiber posts have an elastic modulus similar to dentin, resulting in more homogeneous stress distribution along the root canal system. Thus, fiber post minimizes the risk of root fractures and lead to more favorable failure mode than metallic posts.The durability of restored endodontically treated teeth depends on many basic factors [1] including the amount of remaining coronal structure, restorative procedures and the materials used [2,3], which appear to be the key factors affecting the longevity of the tooth. Although low percentage failure rates and satisfactory clinical performance have been reported when fiber posts were used [4, 5, 6], pulpless teeth are still considered more vulnerable and susceptible to fracture in comparison to vital teeth [7].The clinical success of a recovery depends on the quality and durability of the bonding joint between the fiber post and the tooth structure. Therefore, it is fundamental that the test method used to evaluate the bond strength provides accurate information on the materials performance [8]. Reviews published in the decades of 1990 and 2010 [9-13] showed a relationship between the conditions for adhesion of post to the substrate, including cement application mode, post pretreatment and sample storage conditions, but only few discussed the variables that influence the bond strength tests. Downloaded by [Florida Atlantic University] at 16:14 06 June 2016 A c c e p t e d M a n u s c r i p t 3The bond strength tests might be influenced by many variables which include: the specimen design, the size of the adhesion surface area, the loading configuration and the type of materials [2,[16][17][18]. The high modulus of elasticity of a bonded composite, the thickness of the adhesive layer between the dentin of the root canal and the post, the format of post and the canal, among others, are variables that influence the stress distribution along the bonded interface [3,18,19] and consequently the outcome of the bond streng...

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Effect of antioxidants on push-out bond strength of hydrogen peroxide treated glass fiber posts bonded with two types of resin cement

Cited by 12 publications

References 28 publications

Effects of hydrogen peroxide pretreatment and heat activation of silane on the shear bond strength of fiber-reinforced composite posts to resin cement

Effects of hydrogen peroxide pretreatment and heat activation of silane on the shear bond strength of fiber-reinforced composite posts to resin cement

Effect of different root dentin pretreatment protocols on the bond strength of fiber posts cemented with core buildup material

Test methods for bond strength of glass fiber posts to dentin: A review

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