Comparison of bond strength of a fiber post cemented with various resin cements

Lee, Hyun-A; Cho, Young-Gon

doi:10.5395/jkacd.2008.33.6.499

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…These voids could impede an appropriate cementation of the post, and may cause its debonding. 22,23 Thus, the injection technique with specific syringes was introduced most recently and used for application of the resin cements seems to be preferred as an effective method for reducing voids and bubbles within the luting cement 4 and increasing homogeneous dispersion of the luting cement. The result of present study that the elongation tip showed significantly higher push-out bond strength than other ways was consistent with these points.…”

Section: Discussionmentioning

confidence: 99%

Comparison of push-out bond strength of post according to cement application methods

Kim

Yum

Park

et al. 2010

J Korean Acad Conserv Dent

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Objectives:The aim of this study was to compare the push-out bond strengths of resin cement/fiber post systems to post space dentin using different application methods of resin cement. Materials and Methods: Thirty extracted human premolars were selected and randomly divided into 3 groups according to the technique used to place the cement into root canal: using lentulo-spiral instrument (group Lentulo), applying the cement onto the post surface (group Direct), and injecting the material using a specific elongation tip (group Elongation tip). After shaping and filling of the root canal, post space was drilled using Rely-X post drill. Rely-X fiber post was seated using Rely-X Unicem and resin cement was light polymerized. The root specimens were embedded in an acrylic resin and the specimens were sectioned perpendicularly to the long axis using a low-speed saw. Three slices per each root containing cross-sections of coronal, middle and apical part of the bonded fiber posts were obtained by sectioning. The push-out bond strength was measured using Universal Testing Machine. Specimens after bond failure were examined using operating microscope to evaluate the failure modes. Results: Push-out bond strengths were statistically influenced by the root regions. Group using the elongation tip showed significantly higher bond strength than other ways. Most failures occurred at the cement/dentin interface or in a mixed mode. Conclusions: The use of an elongation tip seems to reduce the number of imperfections within the selfadhesive cement interface compared to the techniques such as direct applying with the post and lentulospiral technique.

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Section: Discussionmentioning

confidence: 99%

Comparison of push-out bond strength of post according to cement application methods

Kim

Yum

Park

et al. 2010

J Korean Acad Conserv Dent

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“…3,4) 여러 임 상 연구들은 섬유 포스트를 사용해서 수복했을 때 치근 파 절의 빈도가 적었다고 보고하였다. 5,6) 코어의 내구성은 코어와 상아질 사이뿐 아니라 코어와 포 스트 사이에서 단단히 접착하여 치아의 기능 운동 중 발생 하는 응력이 효과적으로 전달되는 계면의 형성 여부와 밀접 한 연관성이 있다.…”

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Effect of surface treatments of fiber posts on bond strength to composite resin cores

Keum

Yoo

2010

J Korean Acad Conserv Dent

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The purpose of the present study was to compare the influence of post-surface treatment with silane, hydrogen peroxide, hydrofluoric acid or sandblasting and to investigate the effect of silane in combination of the other treatments on the microtensile bond strength between fiber posts and composite resins for core build-up. Thirty-two glass-fiber posts (FRC Postec Plus, Ivoclar Vivadent, Schaan, Liechtenstein) were divided into eight groups according to the different surface pretreatments performed: silane application (S); immersion in 28% hydrogen peroxide (HP); immersion in hydrogen peroxide followed by application of silane (HP-S); immersion in 4% hydrofluoric acid gel (HF); immersion in hydrofluoric acid gel followed by application of silane (HF-S); sandblasting with aluminum oxide particles (SB); sandblasting followed by application of silane (SB-S). In control group, no surface treatment was performed. The composite resin (Tetric Flow, Ivoclar Vivadent, Schaan, Liechtenstein) was applied onto the posts to produce the composite cylinder specimen. It was sectioned into sticks to measure the microtensile bond strength. The data was analyzed with one-way ANOVA and LSD test for post hoc comparison (p < 0.05). Post pretreatment with sandblasting enhanced the interfacial strength between the fiber posts and core materials. Moreover, sandblasting followed by application of silane appears to be the most effective method that can improve the clinical performance of glass fiber posts. [J Kor Acad Cons Dent 35(3):173-179, 2010]

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Effect of dentin surface wetness on tensile bond strength of self adhesive resin cements

Yoon

Park

Kim

et al. 2009

J Korean Acad Conserv Dent

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Comparison of bond strength of a fiber post cemented with various resin cements

Cited by 3 publications

References 15 publications

Comparison of push-out bond strength of post according to cement application methods

Comparison of push-out bond strength of post according to cement application methods

Effect of surface treatments of fiber posts on bond strength to composite resin cores

Effect of dentin surface wetness on tensile bond strength of self adhesive resin cements

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