Effect of Surface Treatment of Fiberglass Posts on Bond Strength to Root Dentin

Valdivia, Andréa Dolores Correia Miranda; Novais, Veridiana Resende; Menezes, Murilo de Sousa; Roscoe, Marina Guimarães; Estrela, Carlos; Soares, Carlos José

doi:10.1590/0103-6440201300143

Cited by 21 publications

(18 citation statements)

References 19 publications

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“…In this study four post and core surface treatments (alcohol or hydrogen peroxide, with or without silane) were proposed. According to the results, there was no significant difference between groups, corroborating findings in the literature ( 16 , 20 ). Thus, the first hypothesis was accepted.…”

Section: Discussionsupporting

confidence: 90%

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Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts

Garcia¹,

Costa²,

Garcia³

et al. 2018

J Clin Exp Dent

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BackgroundThere is no ideal protocol for the surface treatment of fiber posts, especially when using a computer-aided design/computer-aided manufacturing (CAD/CAM) experimental fiberglass block. The purpose of this study was to evaluate the bond strength of a CAD/CAM customized glass fiber post and core after applying different surface treatment techniques.Material and MethodsForty premolars were prepared to receive a customized CAD/CAM glass-fiber post and core obtained from an experimental block of glass fiber and epoxy resin. The specimens were randomly distributed in 4 groups (n=10) according to the post and core surface treatment: ETH - 70% ethanol; HP - 24% hydrogen peroxide for 1 minute; ETH/S - 70% ethanol + silane; HP/S - 24% hydrogen peroxide + silane. The universal adhesive containing silane was applied on the posts and prepared post spaces in all groups. The posts were cemented using dual cure resin cement. The specimens were stored in distilled water at 37°C for 24 h, cut (two slices of 1 mm for each root third - coronal, middle, and apical) and subjected to push-out test (0.5 mm/min). Data was subjected to two-way ANOVA (surface treatment and root third) and Tukey’s test (α=0,05).ResultsThere was no significant difference of bond strength values among groups, regardless the surface treatment (p >0.05). There was significant difference on bond strength values for the different root thirds (p<0.05) (coronal>middle=apical).ConclusionsThe different surface treatment and application of additional silane in the CAD/CAM customized glass-fiber post and core does not interfere on bond strength values. The root dentin third interfered on the bond strength, with higher values for the coronal third. Key words:Post and core technique, cad/cam, shear strength, hydrogen peroxide.

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Section: Discussionsupporting

confidence: 90%

“…The epoxy matrix is substantially incapable of reacting with the monomers of the resin cement. Thus, the post surface treatment becomes essential, because it will partially remove the epoxy resin matrix, exposing the glass fibers so that they can receive the silanization ( 13 , 16 , 18 , 20 ).…”

Section: Discussionmentioning

confidence: 99%

Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts

Garcia¹,

Costa²,

Garcia³

et al. 2018

J Clin Exp Dent

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“…Several studies have compared the two post systems with respect to their ability to reduce the risk of root fracture and have described the best techniques and protocols for use of posts, including post length and diameter and adhesive system. These studies have used different methods, such as application of oblique load and cyclic load, but all results converge positively to the same conclusion: the use of glass-fiber posts reduces the risk of root fracture, thus increasing the success of restoration 5,7,[9][10][11][12][13][14] . However, many professionals who advocate the use of cast metal posts and cores raise the question of how copings for metal-ceramic crowns cemented to glass-fiber posts rebased with composite resin would behave under tensile stress.…”

Section: Introductionmentioning

confidence: 69%

Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts

Henriques

Saguchi

Neto

et al. 2018

Rev. odontol. UNESP

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Introduction Endodontically treated teeth are more susceptible to root fracture than vital teeth. In order to reduce the risk of fracture, the use of intra-radicular posts and crowns is indicated. However, their own fracture resistance remains unclear. Objective To analyze the behavior of metal-ceramic crown copings cemented to two types of intra-radicular posts under tensile stress. Material and method Sixteen metal-ceramic crown copings cemented with zinc phosphate cement to cast metal posts and cores (group 1, n = 8) or with self-adhesive resin cement to glass-fiber posts rebased with composite resin (group 2, n = 8) were subjected to tensile testing after endodontic treatment and standardized preparation. Failure occurred when the crown coping and/or post-core assembly fractured and/or detached. Result In group 1, after the application of a mean tensile load of 46.83 N, 7 crown copings and metal cores separated as a whole, while in 1 specimen the coping detached from the metal core. In group 2, a mean tensile load of 127.68 N resulted in glass-fiber post fracture, and in 1 case the entire crown-post-core assembly was detached. Tensile strength differed significantly between the two groups (p = 0.0085). Conclusion Our findings suggest that metal-ceramic crown copings cemented with self-adhesive resin cement show strong adhesion to composite resin cores associated with glass-fiber posts, thus providing a safe alternative to the use of cast metal posts and cores.

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“…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%

“…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%

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 Surface Treatment of Fiberglass Posts on Bond Strength to Root Dentin

Cited by 21 publications

References 19 publications

Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts

Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts

Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts

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

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