Effect of ultrasonic activation of the adhesive system on dentin tubule penetration and the pushout bond strength of fiber posts

ABSTRACT Aim The aim of this study was to evaluate the effect of chlorhexidine and ethanol application on the push-out bond strength and bond durability of fiber posts cemented with an etch-and-rinse adhesive system/resin cement to intraradicular dentin. Materials and methods Fifty-four bovine roots were shaped for the cementation of a fiberglass post and received the application of 37% phosphoric acid. They were then randomly divided into three groups, according to the type of dentin treatment (n = 18) performed: no treatment (control group), 100% ethanol, or 2% chlorhexidine. Next, the adhesive system (Adper Scotch Bond Multipurpose Plus, 3M ESPE) was applied to the dentin, according to the manufacturer's instructions. Glass fiber posts were cemented with dual resin cement (Rely X ARC, 3M ESPE). After 48 hours, the specimens were serially sectioned for push-out test analysis, providing two slices from each root third (cervical, medium and apical), one of which was tested immediately and the other stored in distilled water for 180 days. The data were analyzed with three-way analysis of variance (ANOVA) for repeated measures and Tukey's test at a 5% significance level. Results Intraradicular treatment with chlorhexidine yielded the highest bond strength means, followed by ethanol treatment. The control group presented the lowest bond strength means. Water storage exerted no effect on bond strength values. Conclusion Both chlorhexidine and ethanol improved push-out bond strength to intraradicular dentin, with the former providing the best results, regardless of the storage time. Clinical significance The application of 2% chlorhexidine or 100% ethanol may be an important step that can be taken to enhance bond strength of fiber posts to intraradicular dentin, when dual resin cements are used. How to cite this article França FMG, Vaneli RC, de Melo Conti C, Basting RT, do Amaral FLB, Turssi CP. Effect of Chlorhexidine and Ethanol Application on Long-term Pushout Bond Strength of Fiber Posts to Dentin. J Contemp Dent Pract 2015;16(7):547-553.

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Effect of Nd:YAG laser in the bond strength of fiberglass posts

Brazilian Dental Science ◽

10.14295/bds.2015.v18i4.1164 ◽

2015 ◽

Vol 18 (4) ◽

pp. 19

Author(s):

Rayssa Ferreira Zanatta ◽

Beatriz Maria da Fonseca ◽

Stella Renata Steves ◽

Carlos Rocha Gomes Torres ◽

Sergio Eduardo Paiva Gonçalves

Keyword(s):

Bond Strength ◽

Laser Irradiation ◽

Nd:Yag Laser ◽

Root Canal ◽

Testing Machine ◽

Adhesive System ◽

Bonding Performance ◽

Fiber Posts ◽

Bond Strengths ◽

Push Out

The aim of the present study was to compare the effects of Nd:YAG laser application in root canals on bond strengths of fiber posts. Thirty single-rooted bovines were randomly divided into three groups (n=10); root canal instrumentation was performed, and pretreatment was conducted as follows: C group: conventional treatment (without laser irradiation); ALC group: Nd:YAG laser was applied after adhesive; and LAC group: Nd:YAG laser was applied before adhesive. The fiber posts Rebilda 15 DC (Voco) were cemented with an adhesive system and resin cement, in accordance with the manufacturer’s instructions. Six slices with 1.0mm height was obtained for of each root and bond strength was measured by push-out test using a universal testing machine (0.5 mm/min). Data were analyzed using Kruskal-Wallis and Dunn’s tests (p <0.05). Push-out bond strengths to root canal dentin were affected by the type of treatment and root third. The use of Nd:YAG laser after the application of adhesive system had a higher bonding performance compared with the use of laser before the application. Also, cervical and medium third presented higher bond strength values than the apical third. It must be conclude that the laser irradiation over the non-cured adhesive system is more efficient for increase in bond strength than the irradiation after the application of the adhesive. However, the use of 60mJ of laser energy is not sufficient to improve the bonding performance.

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Evaluation of the Influence of the Nd:YAG Laser and Different Irrigants on the Bond Strength of the Adhesion of the Fiber Posts to Root Dentin using a Self-etching Adhesive System

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1226 ◽

2013 ◽

Vol 4 (3) ◽

pp. 170-174

Author(s):

Cesar Rogério Pucci ◽

Carlos Rocha Gomes Torres ◽

Cláudio Antonio Talge Carvalho ◽

Ana Julia Farias Lacerda ◽

Marina Gullo ◽

...

Keyword(s):

Bond Strength ◽

Sodium Hypochlorite ◽

Nd:Yag Laser ◽

Root Canal ◽

Adhesive System ◽

Root Canal Filling ◽

Yag Laser ◽

Fiber Posts ◽

Significant Difference ◽

Root Dentin

ABSTRACT Aim The aim of this study was to investigate the effects of pretreatment of different irrigating solutions with and without the application the Nd: YAG laser on the bond strength (RU) of the adhesion of the fiberglass post relined with resin composite to the root dentin. Materials and methods Sixty-six single bovine incisor roots were divided into 6 groups according to irrigating solution and with/without the apllication of the Nd: YAG laser after root canal filling: S- saline; C-2% chlorhexidine solution, H-2.5% sodium hypochlorite; SL-saline + laser, CL-2% chlorhexidine + laser; HL-2.5% sodium hypochlorite + laser (all n = 11). The roots were standardized up to a file # 80 and root-filled with gutta-percha (Dentsply) and Sealer 26 (Dentsply) by lateral condensation. The root canal filling was partly removed. Afterward, root canals were irrigated with 5 ml of the selected irrigant and the fiberglass post were cemented with epoxy resin curing dual Bifix QM (VOCO) and a self-etch adhesive system Futurabond DC (VOCO). All roots were sectioned transversely, and the push-out tested was performed. The bond strength means were analyzed by the analysis of variance and Tukey test (α= 5%). Results The following bond strength MPa values—were recorded for each group: group C—7.77(±1.8)a, LC—6.46 (±2.2)a, S7.33 (±2.2)a, LS 7.35 (±1.68)a, H 5.43 (±1,3)b, LH 5.13 (±1,6)b. A signifcant bond strenght decrease was noticed with the use of 2.5% NaOCl (p < 0.05). No statistical significant difference were found with our without the apllication of the Nd:YAG laser (p > 0.05). Conclusion Regardless the irrigant tested, the use of Nd: YAG laser can be indicated prior to cementation of fiberglass without loss in bond strength. How to cite this article Pucci CR, Lacerda AJF, Gullo M, Xavier ACC, Torres CRG, Martinho FC, Carvalho CAT. Evaluation of the Influence of the Nd:YAG Laser and Different Irrigants on the Bond Strength of the Adhesion of the Fiber Posts to Root Dentin using a Self-etching Adhesive System. World J Dent 2013;4(3):170-174.

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Influence of different burs and acid ultrasonic agitation on the bonding of fiber posts to root dentin

Brazilian Journal of Oral Sciences ◽

10.20396/bjos.v17i0.8654069 ◽

2018 ◽

Vol 17 ◽

pp. e181358

Author(s):

Julio Cezar Chidoski-Filho ◽

Giovana Mongruel Gomes ◽

Bruna Fortes Bittencourt ◽

Alessandra Reis ◽

Osnara Maria Mongruel Gomes ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Adhesive System ◽

Cross Product ◽

Resin Cement ◽

Ultrasonic Agitation ◽

Diamond Bur ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Root Dentin

Aim: The objective is to evaluate the influence of different burs used to prepare the root canal space and acid ultrasonic agitation on bond strength (BS) between glass fiber posts (GFP) and root dentin. Methods: After endodontic treatment, the root canal spaces of 36 extracted human canines were prepared, according to the rotary instrument used (n=18): carbide bur (CB), provided by the post manufacturer and a diamond bur (DB). In both groups, the fiber posts were cemented with the adhesive system Ambar and resin cement Allcem, following the manufacturer`s instructions. Previously to the cementation procedures, the groups were subdivided into 2 groups (n=9), according to the phosphoric acid application mode: conventional etching (CE) and active etching (AE), performed by ultrasonic tip, both for 15s. Before the cementation procedures and after the acid application, 1 root of each group was randomly selected for ultrastructural morphological evaluation by SEM. After 1 week of the cementation, 8 specimens per group were transversely sectioned into six 1-mm thick slices, the root canal regions (cervical, medium and apical) were identified and the push-out test was performed to evaluate BS. Data were analyzed by 3-way ANOVA and Tukey test (α=0.05). Results: The results showed that the cross-product interaction of all factors was significant (P=0.035). Higher bond strength values were obtained when a DB with conventional etching, instead of CB, was used to prepare the root post space. Conclusion: It may be concluded that the use of diamond burs with conventional etching yields high BS values in all root canal thirds.

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Effect of Intracanal Medicaments on Pull-Out Bond Strength of Fiber Post Cemented with a Self-Adhesive System

European Journal of Dentistry ◽

10.1055/s-0039-1694313 ◽

2019 ◽

Vol 13 (03) ◽

pp. 420-425

Author(s):

Pegah Sarraf ◽

Atoosa Assadi ◽

Nazanin Kiomarsi ◽

Fatemeh Mohammadian ◽

Arsalan Assadi ◽

...

Keyword(s):

Bond Strength ◽

Adhesive System ◽

Analysis Data ◽

Control Group ◽

Fiber Post ◽

Root Canals ◽

Pull Out ◽

Fiber Posts ◽

Significant Difference ◽

Glass Fiber Posts

Abstract Objectives This study aimed to assess the effect of four intracanal medicaments on pull-out bond strength of fiber posts. Materials and Methods A total of 65 single-rooted, single-canal teeth were selected and decoronated. Root canals were prepared and after rinsing were randomly divided into five groups (n = 13). G1: calcium hydroxide (CH), G2: CH plus chlorhexidine (CH+CHX), G3: triple antibiotic paste (TAP), G4: double antibiotic paste (DAP) were applied in the canals in the four groups. The control group (G5) received no medicament. After 4 weeks, the medicaments were rinsed off and the canals were filled with gutta-percha. Post space was then prepared in root canals for the placement of glass fiber posts and self-adhesive cement (Panavia F2). After cementation, they were subjected to pull-out bond strength test. Statistical Analysis Data were statistically analyzed using one-way analysis of variance and Tukey test.Results The pull-out bond strength values were significantly different in the groups (p < 0.001). The highest values of bond strength were seen in G2, G1, and G3 (359.97 ± 81.26, 333.79 ± 98.96, 309.27 ± 78.07), respectively. There was no significant difference between G4 and G5 (p = 0.75). Conclusion The results showed that CH, CH+CHX, and TAP enhanced the pull-out bond strength of fiber post to root canal wall as compared to the control group.

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Influence of adhesive system in bond strength of fiber glass posts to radicular dentin using dual cure resin cement

Brazilian Dental Science ◽

10.14295/bds.2014.v17i1.932 ◽

2014 ◽

Vol 17 (1) ◽

pp. 4 ◽

Cited By ~ 1

Author(s):

Daphne Camara Barcellos ◽

Maria Filomena Rocha Lima Huhtala ◽

Melissa Aline Silva ◽

Ana Paula Martins Gomes ◽

Lucas Teixeira Franco

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Adhesive System ◽

Single Bond ◽

Pull Out ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Group 2 ◽

Self Etch ◽

Group 1

The purpose of this study was to evaluate the bond strength between root dentin and glass fiber posts cemented with dual cure resinous cement associated with the conventional and self-etching adhesive systems. Twenty-four single-rooted human teeth were selected, and the crowns were removed at the cement enamel junction. The roots received biomechanical preparation and obturation followed by the intraradicular preparation compatible with a drill diameter of the glass fiber posts. The roots were divided into two groups, according to cementation protocol (n-12): Group 1 - etched with 37% phosphoric acid for 30 seconds, total-etch adhesive system Single Bond (3M ESPE) and Enforce resinous cement (Dentsply); Group 2 – self-etch adhesive system One Up Bond F (Tokuyama) and Enforce resinous cement (Dentsply). After the posts cementation, the roots were kept at 370 C for one week, and submitted to pull out test on the universal testing machine Emic to a traction speed of 1 mm/min. Data in MPa were submitted to the statistical t-test (5%). The t-test showed significant differences between the two groups (p=0.003). The average values in MPa (±standard-deviation) were: Group 1: 5.28(±3.25), Group 2: 10.05(±3.78). Enforce associated with the self-etch adhesive system One Up Bond F showed significantly higher bond strength values than Group 1 - Enforce associated with the total-etch adhesive system Single Bond.

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Influence of different adhesive systems on bond strength of carbon fiber posts used to restore endodontically treated teeth

Journal of Research in Dentistry ◽

10.19177/jrd.v1e42013335-343. ◽

2013 ◽

Vol 1 (4) ◽

pp. 335

Author(s):

Lorena Dos Santos Silva ◽

Kátia Rodrigues Reis ◽

Glaucia Maria Bovi Ambrosano ◽

Fabíola Mendonça da Silva Chuí ◽

Neylla Teixeira Sena ◽

...

Keyword(s):

Carbon Fiber ◽

Bond Strength ◽

Shear Bond Strength ◽

Adhesive System ◽

Adhesive Systems ◽

Group Iii ◽

Fiber Posts ◽

Group I ◽

Group Ii ◽

Push Out

The aim of this study was to evaluate the influence of three adhesive systems on resinous bonding of carbon fiber posts on roots of endodontically treated bovine incisors. Thirty bovine lower incisors with similar dimensions were selected for this study. The roots were endodontically treated and subsequently prepared for post cementation. The posts were treated with adhesive systems Scotchbond MultiPurpose Plus – 3M chemical cure (Group I), light cure (Group II) and dual cure (Group III). Carbon fiber posts were adjusted to 8mm and cemented in the canal with resinous dual cement RelyX ARC – 3M. Those were taken to Universal Essay Machine for the push-out shear bond strength test. Analysis of the results were made with 2-Way ANOVA and post-hoc with Tukey’s test (p<0.05). The groups were statistically different. The chemical cure adhesive system (Group I) showed highest values of resistance to push-out, both at all thirds as well as in total average (24.77 MPa), followed by light cure adhesive (Group II, 22.26 MPa), and dual cure (Group III, 18.38 MPa). Scothbond Multi-Purpose Plus – 3M adhesive system presented highest shear bond strength on resinous cementation of carbon posts to root dentin, and therefore is the first choice among the materials presented in this study.

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The Effect of Light-curing Access and Different Resin Cements on Apical Bond Strength of Fiber Posts

Operative Dentistry ◽

10.2341/12-477-l ◽

2014 ◽

Vol 39 (2) ◽

pp. e93-e100 ◽

Cited By ~ 9

Author(s):

B Daleprane ◽

C Nemesio de Barros Pereira ◽

RL Oréfice ◽

AC Bueno ◽

RR Vaz ◽

...

Keyword(s):

Bond Strength ◽

Adhesive System ◽

Fiber Glass ◽

Root Canals ◽

Fiber Posts ◽

Etch And Rinse ◽

Group A ◽

Light Curing ◽

Post Space ◽

Effect Of Light

SUMMARY Purpose This study evaluated the effect of light-curing access on the bond strength of fiber glass posts to the apical area of bovine roots using self-adhesive cement or dual-cured cement with an etch-and-rinse adhesive system. Materials and Methods The root canals of 60 bovine teeth were endodontically treated and filled. A 15-mm-length post space was prepared and roots were randomly divided into three groups, simulating the levels of light-curing access: coronal (C), with 15-mm post space; middle (M), in which the coronal thirds of roots were cut out, leaving a 10-mm post space; and apical (A), in which the coronal and middle thirds of roots were cut out, leaving a 5-mm post space. Fiber glass posts (Reforpost # 3, Angelus) were cemented with RelyX U100 (3M ESPE) or RelyX ARC/Scotchbond Multi Purpose Plus (SBMP) (3M ESPE) (n=10) and light-cured. After 24 hours, the apical thirds of roots were sectioned perpendicularly to the long axis and submitted to a push-out test (0.5 mm/min, 200 N). The Kruskal-Wallis test compared the three levels of light-curing access, and the Mann-Whitney test compared the cements. Results The bond strength was significantly higher in the groups C (p=0.028) and M (p=0.016) when U100 was used, whereas it was similar for both cements in group A. The bond strengths of posts cemented with ARC/SBMP were significantly higher in group A compared to group C (p=0.031). Conclusions The type of cement used and the light-curing access level influenced the bond strength between glass fiber posts and root canals. The bond strength of the RelyX ARC/SBMP cement proved to be more dependent on photoactivation than was the RelyX U100 cement. The light-curing access level did not influence the apical bond strength of RelyX U100.

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Effect of Intracanal Irrigants on Bond Strength of Fiber Posts Cemented With a Self-adhesive Resin Cement

Operative Dentistry ◽

10.2341/15-246-l ◽

2016 ◽

Vol 41 (6) ◽

pp. e159-e167 ◽

Cited By ~ 9

Author(s):

MS Barreto ◽

RA Rosa ◽

VG Seballos ◽

E Machado ◽

LF Valandro ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Resin Cement ◽

Laser Scanning Microscopy ◽

Fiber Post ◽

Ultrasonic Activation ◽

Adhesive Resin ◽

Universal System ◽

Fiber Posts ◽

Adhesive Resin Cement

SUMMARY Objective: The aim of this study was to evaluate the effect of five intracanal irrigants on bond strength of fiber posts cemented with newer self-adhesive resin cement. Methods: A total of 60 extracted, single-rooted human premolars, sectioned at 14 mm, were prepared with the ProTaper Universal system with a size F3 instrument and filled with an F3 master cone and AH Plus. The root canal filling was partially removed, leaving 4 mm of apical gutta-percha. Specimens were randomly assigned to five groups (n=12), according to the solution used for dentin surface treatment before fiber post cementation, as follows: EDTA 17% (EDTA); QMix (QM); SmearClear (SC); 2.5% sodium hypochlorite (NaOCl), and 0.9% saline solution (SS). Ultrasonic activation was performed (three times, 20 seconds each), and root canals were dried with paper points. Fiber posts were cemented with RelyX U200. In one specimen per group, rhodamine B dye was mixed with RelyX U200 to provide adequate fluorescence for confocal laser scanning microscopy (CLSM) assessment. Specimens were transversally sectioned and three slices were obtained, one for each root third. Next, a push-out test was performed. A stereomicroscope and CLSM were used to analyze the failure modes and to illustrate the pattern of infiltration of RelyX U200 into dentinal tubules, respectively. Bond strength means were calculated, and analysis of variance and Bonferroni tests were used for statistical analysis. Results: SS showed the highest mean bond strength values (11.5±5.3), superior to QM (5.1±3.1) and SC (5.1±3.3). NaOCl presented intermediary bond strength values (9.7±5.0), similar to EDTA (7.7±2.9) and SS. QM and SC showed the lowest mean bond strength (p<0.05). Adhesive failures between cement/dentin were predominant (53.9%). Conclusion: SS and NaOCl associated with ultrasonic activation seem to be adequate solutions for root canal cleaning before fiber post cementation with self-adhesive resin cement, whereas chelating solutions, such as EDTA, QM, and SC, cause a decrease in bond strength.

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