scholarly journals EVALUATION OF PUSH-OUT BOND STRENGTH BETWEEN DIFFERENT SURFACE TREATED GLASS FIBER POSTS AND COMPOSITE

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Dr. Sundaresan Balagopal ◽  
Dr. Vandana James ◽  
Dr.M. Anisha Sebatni ◽  
Dr.Ramasamy Saravanan Gayathri ◽  
Dr.Bahavathi Ananthan Hemasathya ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Bonding Agent ◽  
Fiber Post ◽  
Silane Coupling ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Push Out

Aim: To evaluate the effect of push-out bond strength between different surface treated glass fiber posts and resin composite. Materials and Methods: Four Cylindrical Glass fiber post (GFP) of 1.3mm diameter were divided into four groups depending on the surface treatment of glass GFP. Group I– no surface treatment done for GFP, group II - silane coupling agent was applied to GFP, then coated with bonding agent, group III – GFP was etched with 37% phosphoric acid, then treated with silane coupling agent and later coated with bonding agent and group IV - GFP was etched with 5% hydrofluoric acid then treated with silane coupling agent and later coated with bonding agent. The surface treated posts were vertically stabilized in the centre of a matrix. Composite was filled circumferentially and incrementally and photo cured. It was then sectioned perpendicular to the vertical axis yielding ten 1.0mm thick discs per fiber post. Ten specimens per group were obtained. They were subjected to push-out bond strength using universal testing machine. One - way analysis of variance and Tukey’s test were performed to verify statistical differences between groups (P< 0.01). Results: Superior bond strength was seen in 5% hydrofluoric acid etched group. Etching with 37% phosphoric acid or silane coupling agent alone did not show significant difference. GFP without surface treatment showed least bond strength. Conclusion: Glass fiber posts should be etched with 5% hydrofluoric acid and treated with silane coupling agent before applying bonding agent for a better bond strength between composite and the GFP. Keywords: Glass fiber post, push-out bond strength, custom made glass fiber post.

scholarly journals Effect of Various Surface Treatments on Push-out Strength of Glass Fiber Posts–An In Vitro Study

2018 ◽  
Vol 06 (01) ◽  
pp. 028-033
Author(s):  
Navjot Kaur ◽  
Manjit Kumar ◽  
Amrit Khosla ◽  
Ritu Batra ◽  
Sumit Katoch
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Surface Treatments ◽  
Fiber Posts ◽  
Silane Coupling ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Agent Group

Abstract Aim The aim of this study was to investigate push-out bond strength of glass fiber posts after various surface treatments and to investigate push-out bond strength at different levels of root (coronal, middle, apical). Materials and Methods Forty extracted teeth were selected for study (maxillary anteriors and mandibular premolars). Roots were sectioned 16 mm from apex, endodontically treated and divided into four groups of 10 each based on surface treatment of posts; Group I (Control Group): No treatment of the post, Group II: Post surface were sandblasted and then treatment with silane coupling agent, Group III: Hydrofluoric acid application on the post surface and then treatment with silane coupling agent, Group IV: Post surface treated with 37% phosphoric acid treatment for 1 minute. Posts after various surface treatments were luted. Roots were then cut into three sections coronal, middle, and apical. The push-out test was done to assess push-out bond strength. The data obtained were statistically analyzed. Results Hydrofluoric acid and silane coupling agent treatment had little effect on the bond strength of post. Sandblasting and silane coupling agent was proven to be more effective and improved push-out strength of glass fiber posts followed by phosphoric acid group. Conclusion It was concluded that sandblasting followed by silane coupling agent showed highest bond strength in all parts of the root compared with other surface treatments. Highest push-out strength was found at the coronal level of the root followed by middle and apical level.

CAD/CAM Milled Glass Fiber Posts: Adaptation and Mechanical Behavior in Flared Root Canals

2021 ◽  
Author(s):  
MER Gama ◽  
GS Balbinot ◽  
GC Ferreira ◽  
EG Mota ◽  
VCB Leitune ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Root Canals ◽  
Fiber Posts ◽  
Cad Cam ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Post And Core ◽  
Push Out

SUMMARY This study aimed to evaluate the cementation and mechanical behavior of flared root canals restored with CAD/CAM milled glass fiber post-and-core systems. Sixty-six endodontically treated human canines with a flared root canal were divided into three different groups according to the type of post: GPF received prefabricated posts; GREL received relined glass fiber posts, and GMILLED received CAD/CAM milled glass fiber posts. Cementation was performed with self-adhesive resin cement. The samples were submitted to x-ray microcomputed tomography analysis for the analysis of voids and gaps. The roots were sectioned and submitted to the push-out bond strength test. The load-to-fracture was evaluated in post-and-core systems. GMILLED presented lower void and lower gap volumes when compared to GPF and GREL. On the load-to-fracture test, GREL presented statistically significant higher values than GMILLED. GPF values had no statistically significant difference from the two other groups. On the push-out bond strength test, GPF presented statistically significant lower values when compared to GREL and GMILLED. The most common failure pattern was between dentin and cement in all groups. CAD/CAM milled glass fiber post-and-core systems presented an enhanced adaptation of glass fiber posts to flared root canal systems. Their results were comparable to relined posts in bond strength, while load-to-fracture-results for GMILLED were lower than those for GPF.

scholarly journals Push-out bond strength of glass fiber posts luted with two resin cements

2017 ◽  
Vol 20 (4) ◽  
pp. 78
Author(s):  
Blanca Liliana Torres Léon ◽  
Vitor Lopes Franco ◽  
Emily Vivianne Freitas Silva ◽  
Leonardo Muniz ◽  
Fernando Carneiro Ribeiro
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Resin Cements ◽  
Anterior Teeth ◽  
Fiber Posts ◽  
Post And Core Technique ◽  
Glass Fiber Posts ◽  
Glass Fiber Post ◽  
Push Out

<p class="CorpoA"><strong>Objective.</strong> To evaluate the bond strength of a prefabricated glass fiber post to the root dentin with two resin cements using the push-out test. <strong>Material and Methods.</strong> Thirty fiber posts (White Post ECD) were cemented in human endodontically treated anterior teeth with two resin cements (n=15): Relyx<sup>TM </sup>ARC and AllCem. The roots were transversely sectioned and divided in cervical, middle and apical thirds after 48 h of cementation. The specimens' retention was tested by push-out method. The results were analyzed by 2-way ANOVA and Tukey’s test (<em>p</em>&lt;0.05). <strong>Results.</strong> There were no significant differences in the bond strength between the resin cements. The bond strength was higher in cervical third than in middle and apical thirds for both resin cements. It was observed higher percentages of adhesive failures followed by mixed. <strong>Conclusions.</strong> Both resin cements are indicated in the cementation of glass fiber post.</p><p class="CorpoA"><strong>Keywords</strong></p><p class="CorpoA">Dental prosthesis; Post and core technique; Biomechanical phenomena.</p>

scholarly journals Influence of Zingiber officinale Extract on Push-Out Bond Strength of Glass-Fiber Post

2018 ◽  
Vol 29 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Tânia Mara da Silva ◽  
Virgílio Vilas Boas Fernandes Junior ◽  
Rosemary Soares de Santana ◽  
Renata Marques de Melo Marinho ◽  
Márcia Carneiro Valera ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Zingiber Officinale ◽  
Resin Cement ◽  
Fiber Post ◽  
Ginger Extract ◽  
Etch And Rinse ◽  
Glass Fiber Post ◽  
Push Out

Abstract The aim of this study was to evaluate in vitro the influence of 20% glycolic ginger extract on the bond strength of glass-fiber post cemented with etch-and-rinse or self-etching resin cement. Forty-eight bovine roots were standardized (17±0.5 mm) and randomly divided into two groups, according to irrigant used during biomechanical preparation: NaOCl: 1% sodium hypochlorite and GEN: 20% glycolic ginger extract. Root canal was prepared and randomly assigned to one of two subgroups (n=12), according to luting protocol: self-etching (RelyX U200) and etch-and-rinse (RelyX ARC). After 48 h, the roots were sectioned perpendicularly (4 in cervical third and 3 in middle third) and submitted to push-out bond strength test (50 kgf load cell, 1.0 mm/min). Failure mode was analyzed in SEM and stereomicroscopy. Data were analyzed by three-way ANOVA and Tukey tests (p<0.05). ANOVA revealed that there were no significant differences between U200 (2.01±0.17)B and ARC (1.93±0.12)B in GEN group, and at the cervical third for both irrigants, 2.69±0.16A and 2.54±0.17A, respectively. Middle third showed lower bond strength than cervical third, regardless the irrigant. Overall, the cervical third regardless the irrigant employed and the association between NaOCl and ARC, presented better adhesive performance.

scholarly journals Effect of Glass Fiber Post Adaptation on Push-Out Bond Strength to Root Dentin

2019 ◽  
Vol 30 (4) ◽  
pp. 350-355 ◽  
Author(s):  
Thiago Lopes de Freitas ◽  
Rafael Pino Vitti ◽  
Milton Edson Miranda ◽  
William Cunha Brandt
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Root Canal ◽  
Failure Modes ◽  
Resin Cement ◽  
Adhesive Failure ◽  
Fiber Post ◽  
Significant Difference ◽  
Glass Fiber Post ◽  
Push Out

Abstract The aim of this study was to evaluate the effect of different glass fiber posts (GFPs) diameters on the push-out bond strength to dentin. Forty unirradicular human teeth were endodontically treated and used for cementation of GFPs (White Post DC, FGM) with different diameters (n=10): P1 - ø 1.6 mm coronal x 0.85 mm apical; P2 - ø 1.8 mm coronal x 1.05 mm apical; P5 - ø 1.4 mm coronal x 0.65 mm apical; and PC - customized post number 0.5 with composite resin (Tetric Ceram A2, Ivoclair Vivadent). All GFPs were cemented into the root canal using a dual-curing luting composite (Variolink II, Ivoclar Vivadent). One slice (1.7 mm) of each root third of cemented GFP (cervical, middle, and apical) was submitted to push-out testing. Failure modes of all specimens were classified as: adhesive failure between resin cement and post; adhesive failure between dentin and resin cement; cohesive failure within resin cement, post or dentin; and mixed failure. The data were analyzed with two-way ANOVA and Tukey’s test (a=0.05). The highest bond strength values were presented for the P2 and PC groups. There was no statistically significant difference between the GFP thirds in each group. The groups P2, P5, and PC showed predominantly adhesive failure. For P1, the most prevalent type of failure was adhesive between resin cement and post. It may be concluded that a glass fiber post that is well adapted to the root canal presents higher bond strength values, regardless of GFP third.

Influence of laser irradiation on the push-out bond strength between a glass fiber post and root dentin

2018 ◽  
Vol 119 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Karla G.F. Gomes ◽  
Natália S. Faria ◽  
Walter R. Neto ◽  
Vivian Colucci ◽  
Erica A. Gomes
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Laser Irradiation ◽  
Fiber Post ◽  
Glass Fiber Post ◽  
Root Dentin ◽  
Push Out

scholarly journals Composite resin repairs: What is the most effective protocol?

2017 ◽  
Vol 20 (1) ◽  
pp. 99
Author(s):  
Alessandra Pereira Andrade ◽  
Angela Mayumi Shimaoka ◽  
Rubens Corte Real de Carvalho
Keyword(s):  
Bond Strength ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Composite Resin ◽  
Surface Treatments ◽  
Bonding Agent ◽  
Etch And Rinse ◽  
Silane Coupling ◽  
One Step ◽  
Self Etch

Objective: The objective of this study was to evaluate the combination effect of surface treatments and bonding agents on bond strength of repairs on aged composite resin. Materials and Methods: One hundred twenty microhybrid composite units (Filtek Z250) aged in distilled at 37ºC water for six months were submitted to different surface treatment prior to resin repairs. Ten specimens were randomly divided into 12 groups: non-treated/no bonding agent (negative control), sandblasting /no bonding agent, silane/no bonding agent, non-treated/ etch-and-rinse; non-treated/one-step self-etch; non-treated/ two-step self-etch; sandblasting/etch-and-rinse; sandblasting/one-step self-etch; sandblasting/two-step self-etch; silane coupling agent/etch-and-rinse; silane coupling agent/ one-step self-etch; silane coupling agent/two-step self-etch. Microshear testing was performed to bond strength assessment. Results: Two-way ANOVA and Tukey’s test (α=0.05) demonstrated significant difference between the surface treatments and adhesive systems. Only no treated surface/etch-and-rinse group showed lower bond strength values when compared to other groups. Conclusion: The considered surface treatments were capable to increase the effectiveness of the repair in composite resin when using the adhesive etch-and-rinse.

Effect of silane-containing universal adhesive on push-out bond strength of glass fiber post to composite resin and to resin cement/intraradicular dentin

2018 ◽  
Vol 84 ◽  
pp. 126-131
Author(s):  
Enaldo Marques França e Silva ◽  
Roberta Tarkany Basting ◽  
Cecilia Pedroso Turssi ◽  
Fabiana Mantovani Gomes França ◽  
Flávia Lucisano Botelho Amaral
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Composite Resin ◽  
Resin Cement ◽  
Fiber Post ◽  
Universal Adhesive ◽  
Glass Fiber Post ◽  
Push Out
Sign in / Sign up

Export Citation Format

Share Document