Influence of different surface treatments of fiberglass posts on the bond strength to dentin

Aim: To assess the influence of different fiberglass post surface treatments on the bond strength (BS) to root dentin. Methods: Thirty bovine root canals were endodontically treated and filled with gutta-percha and AH Plus sealer. At 24 h after the endodontic filling, the post spaces were prepared with Gates-Glidden drills and #3 drills of the DC White Post system, maintaining a 4 mm apical seal. The roots were randomly divided into three groups: S (fiberglass posts treated with silane), SA (fiberglass posts treated with silane and a hydrophobic adhesive system) and SHA (fiberglass posts treated with silane, followed by drying with hot air). The posts were cemented with a selfadhesive cement (RelyX U200). The specimens were stored in distilled water at 37 °C for 24 h and subjected to the push-out test (0.5 mm/min). Data were statistically analyzed using one-way ANOVA and Tukey's test (α=0.05) Results: SA and SHA groups showed the highest BS mean values (11.29 and 10.85 MPa, respectively), while the S group presented the lowest BS mean value (7.21 MPa). S group was significantly different from SA and SAH groups. Conclusions: The surface treatment of fiberglass posts influenced BS values.

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Effect of a sonic device on bonding of fiberglass posts to root canals

Brazilian Journal of Oral Sciences ◽

10.20396/bjos.v17i0.8654177 ◽

2018 ◽

Vol 17 ◽

pp. e18924

Author(s):

Marina de Almeida Salim ◽

Thais Mageste Duque ◽

Heloisa Carla Dell Santo Gusman ◽

Carolina Oliveira de Lima ◽

Brenda Paula Figueiredo de Almeida Gomes ◽

...

Keyword(s):

Root Canal ◽

Adhesive System ◽

Resin Cement ◽

Root Canal Filling ◽

Root Canals ◽

Gutta Percha ◽

Ah Plus ◽

Root Dentin ◽

Post Hoc ◽

Adhesive Cement

Aim: This study evaluated the effect of a sonic device on the bonding of fiberglass posts cemented with a self-etching adhesive combined with conventional cement or a self-adhesive cement to root dentin. Methods: Forty single-rooted bovine incisors were endodontically prepared using a step-back technique. Gutta-percha and AH Plus sealer were used for root canal filling, combined with a thermoplasticization technique. After 1 week, the post space was prepared and the roots were divided into four groups according to the following factors: adhesive system/resin cement (Ambar/ AllCem Core [FGM] and RelyX U200 [3M]) and application mode (manual or sonic). The posts were cemented and the roots were cut into discs and submitted to push-out bond strength (POBS) test. The failure mode was evaluated using a stereoscope at 25x magnification. The data were analyzed statistically using ANOVA and Tukey’s post-hoc test (α = 0.05). Results: The sonically activated RelyX U200 group was superior to the other groups. RelyX U200 manually applicated showed similar results to those of sonically activated Âmbar/AllCem. These three groups outperformed the Âmbar/AllCem manually applicated group. Adhesive failure between dentin and resin cement was the most predominant pattern. Conclusion: Sonic application of self-etching adhesive and self-adhesive cement improved the POBS of fiber posts to the root canal.

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The Effects of Water and Acetone-based Dentin Adhesives on Apical Microleakage

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-5-2-93 ◽

2004 ◽

Vol 5 (2) ◽

pp. 93-101 ◽

Cited By ~ 1

Author(s):

Oya Bala ◽

L. Sibel Karadag ◽

Emin Türköz ◽

Tansev Mihçioğlu

Keyword(s):

Adhesive System ◽

Root Canals ◽

Gutta Percha ◽

Dentin Adhesives ◽

Significant Difference ◽

Ah Plus ◽

Group 2 ◽

Materials Used ◽

Group 1

Abstract In this study, the aim was to assess the in vitro apical microleakage of a resin-based sealer used with two different adhesives. Thirty nine freshly extracted maxillary incisors were used. The teeth were decoronated at the cemento-enamel junction with a water-cooled fissure bur. Chemo-mechanical debridement of the root canals was accomplished with the step-back technique. The smear layer was removed by 19% ethylenediamine tetra acetic acid (EDTA). The roots were then divided into three experimental groups of thirteen teeth in each. Specimens in group 1 were filled with gutta-percha, AH Plus sealer, and water-based adhesive system (Syntac Single Component). Group 2 specimens were filled with gutta-percha, AH Plus sealer, and acetone-based dentin adhesive (Prime & Bond NT). Specimens of group 3 were filled with only gutta-percha and AH Plus sealer (no adhesive was applied). The teeth were immersed into 2% methylene blue solution. Apical sealing qualities were assessed by measuring the linear dye penetration with a stereomicroscope. Dentin tubule penetration was observed under scanning electron microscopy (SEM). Results showed no statistically significant difference between the materials used, however, the leakage in group 2 was less than group 1 and 3. Citation Karadag LS, Bala O, Türköz E, Mihçioğlu T. The Effects of Water and Acetone-based Dentin Adhesives on Apical Microleakage. J Contemp Dent Pract 2004 May;(5)2:093-101.

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Bond strength to root dentin and fluid filtration test of AH Plus/gutta-percha, EndoREZ and RealSeal systems

Journal of Applied Oral Science ◽

10.1590/1678-775720130114 ◽

2013 ◽

Vol 21 (4) ◽

pp. 369-375 ◽

Cited By ~ 4

Author(s):

Alaa Abdul Mahdi ◽

Victoria Bolanos-Carmona ◽

Santiago Gonzalez-Lopez

Keyword(s):

Bond Strength ◽

Fluid Filtration ◽

Gutta Percha ◽

Ah Plus ◽

Root Dentin

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Can Type of Instrumentation and Activation of the Final Irrigant Improve the Obturation Quality in Oval Root Canals? A Push-Out Bond Strength Study

Biology ◽

10.3390/biology11010059 ◽

2022 ◽

Vol 11 (1) ◽

pp. 59

Author(s):

Ajinkya M. Pawar ◽

Anda Kfir ◽

Zvi Metzger ◽

Anuj Bhardwaj ◽

Yeyen Yohana ◽

...

Keyword(s):

Bond Strength ◽

File Systems ◽

Adhesive Failure ◽

Passive Ultrasonic Irrigation ◽

Root Canals ◽

Filling Materials ◽

Gutta Percha ◽

Ah Plus ◽

Ultrasonic Irrigation ◽

Push Out

To appraise the outcome of file systems and activation of the final irrigant on the push-out bond strength of root fillings in oval canals. Single-rooted mandibular premolars (n = 180) with oval canals were divided into three groups (n = 60) for instrumentation: ProTaper Next (PTN), WaveOne (WO), and Self-adjusting File (SAF). The specimens were further divided into subgroups (n = 20) and subjected to final irrigation with activation by EndoActivator or passive ultrasonic irrigation or without activation. Then, the specimens were again subdivided (n = 10) and obturated with gutta-percha and AH Plus (GP-AH) or C-Point with EndoSequence bioceramic sealer (C-EBC). One-millimeter-thick horizontal slices were cut from the apical third of the root, 5 mm from the apex, and subjected to push-out bond strength (BS) testing. Specimens for which SAF was used exhibited higher BS values than those for which PTN or WO was used (p < 0.05). Activation of the final irrigation did not affect the BS of the root fillings. Root fillings made of C-EBC presented a higher BS than those made of GP-AH (p < 0.05). Adhesive failure was more common with specimens instrumented using PTN and WO. Root canals instrumented with SAF, showed the highest bond strength values for both root filling materials. The C-EBC produced significantly higher bond strength values than those of the GP-AH.

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Effect of Sonic Agitation of a Binary Mixture of Solvents on Filling Remnants Removal as an Alternative to Apical Enlargement—A Micro-CT Study

Journal of Clinical Medicine ◽

10.3390/jcm9082465 ◽

2020 ◽

Vol 9 (8) ◽

pp. 2465

Author(s):

Inês Ferreira ◽

Pedro S. Babo ◽

Ana Cristina Braga ◽

Manuela E. Gomes ◽

Irene Pina-Vaz

Keyword(s):

Binary Mixture ◽

Methyl Ethyl Ketone ◽

Solvent Mixture ◽

Methyl Ethyl ◽

Micro Computed Tomography ◽

Significance Level ◽

Root Canals ◽

Gutta Percha ◽

Ah Plus ◽

Mandibular Incisors

Background: This work aimed to evaluate the efficacy of sonic agitation of a binary mixture of solvents (methyl ethyl ketone/tetrachloroethylene) on filling remnants removal and compare the effects of solvent agitation with the enlargement to the next instrument size. Methods: Twenty-four mandibular incisors were prepared with ProTaper Next (X1, X2) and obturated with the single-cone technique and AH Plus sealer. The teeth were retreated with ProTaper Universal Retreatment and ProTaper Next and divided into two groups (n = 12) according to the final instrument (X3 or X4). All canals were submitted to a supplementary procedure consisting of a mixture of solvents―methyl ethyl ketone/tetrachloroethylene, agitated with EndoActivator. The volume of filling remnants was assessed through micro-computed tomography in the apical 5 mm. Statistical analysis was performed with a significance level of 5%. Results: The supplementary procedure of agitation of the solvent mixture was beneficial in both groups (p < 0.05). There were no statistically significant differences between canals re-prepared until X4 and canals re-prepared until X3 plus solvent (p > 0.05). Conclusions: An additional step with a two-solvent solution potentiated by EndoActivator showed to be very effective for the removal of gutta-percha and resinous sealer remnants from apical root canals of mandibular incisors, avoiding further enlargement.

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Shear Bond Strength of Different Adhesive Systems to Primary Dentin and Enamel

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.31.1.2436up85l810667h ◽

2007 ◽

Vol 31 (1) ◽

pp. 35-40 ◽

Cited By ~ 7

Author(s):

Carla Miranda ◽

Luiz Henrique Maykot Prates ◽

Ricardo de Souza Vieira ◽

Maria Cristina Marino Calvo

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Shear Bond Strength ◽

Adhesive System ◽

Mode Analysis ◽

Single Bond ◽

Adhesive Systems ◽

Mean Values ◽

Failure Mode Analysis ◽

Distal Direction

The aims of this study were to evaluate the shear bond strength (SBS) of four adhesive systems applied to primary dentin and enamel and verify, after SBS testing, the failure mode of the adhesive interface. Sixty extracted sound primary molars were selected and crowns were sectioned in a mesial-distal direction. Specimens were randomly assigned into two groups (adhesion to enamel and adhesion to dentin) and then subdivided into four subgroups according to the adhesive system (n=15): Scotchbond Multi-Purpose (SMP) – Single Bond (SB) – Clearfil SE Bond (and Adper Prompt LPop (APL) – SBS tests were performed and the obtained values were statistically analyzed using ANOVA and Tukey tests (p<0.05). The failure mode analysis was performed with a Scanning Electron Microscope (XL-30, Philips). SBS mean values on enamel were [MPa (SD)]: SMP – 27.89 (7.49); SB – 23.92 (8.8); CSB – 24.36 (6.69); APL – 25.96 (4.08); and on dentin: SMP – 17.29 (4.25); SB – 18.2 (8.74); CSB – 16.13 (7.14); APL – 6.04 (3.35). The predominant failure mode was cohesive (primarily of the bonding agent). On enamel SBS was statistically similar for all four adhesives. On dentin SBS of APL was lower than the other tested adhesives.

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Evaluation of Apical Sealing Ability of Four Different Sealers using Centrifuging Dye Penetration Method: An in vitro Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1237 ◽

2012 ◽

Vol 13 (6) ◽

pp. 830-833

Author(s):

Romel Joseph

Keyword(s):

In Vitro Study ◽

Blue Dye ◽

Control Groups ◽

Root Canals ◽

Dye Penetration ◽

Gutta Percha ◽

Sealing Ability ◽

Ah Plus ◽

And Control

ABSTRACT Aim The aim of this in vitro study was to evaluate the apical seal obtained with four root canal sealers AH 26, Sealapex, Endoflas FS and AH Plus, with lateral condensation. Materials and methods Sixty root canals were prepared using the step-back technique. The specimens were divided into four experimental groups of 12 teeth and two control groups of 12 teeth. The experimental groups were obturated by laterally condensed gutta-percha with one of the tested sealers and control groups were obturated without any sealer. Methylene blue dye penetration with centrifuging method was used to evaluate the apical sealing ability. The quantitative apical leakage of each specimen was measured after 2 weeks. Results The results showed no significant differences between all groups except between AH Plus and Endoflas FS (<0.05). AH Plus showed significantly less leakage than Endoflas FS. Conclusion AH Plus showed the least leakage compared to AH 26, Sealapex and Endoflas FS. How to cite this article Joseph R, Singh S. Evaluation of Apical Sealing Ability of Four Different Sealers using Centrifuging Dye Penetration Method: An in vitro Study. J Contemp Dent Pract 2012;13(6):830-833.

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Effect of surface treatments on repair strength, roughness and morphology in aged metal-free crowns

Brazilian Journal of Oral Sciences ◽

10.20396/bjos.v19i0.8656155 ◽

2020 ◽

Vol 19 ◽

pp. e206155

Author(s):

Yançanã Luizy Gruber ◽

Thaís Emanuelle Bakaus ◽

Bruna Fortes Bittencourt ◽

João Carlos Gomes ◽

Alessandra Reis ◽

...

Keyword(s):

Bond Strength ◽

Surface Treatment ◽

Adhesive System ◽

Surface Treatments ◽

Metal Free ◽

Diamond Bur ◽

Before And After ◽

Post Test ◽

Microshear Bond Strength

Aim: The roughness and micromorphology of various surface treatments in aged metal-free crowns and the bond strength of these crowns repaired with composite resin (CR) was evaluated in vitro. Methods: A CR core build-up was confectioned in 60 premolars and prepared for metal-free crowns. Prepared teeth were molded with the addition of silicone, and the laboratory ceromer/fiber-reinforced crowns (SR Adoro/Fibrex Lab) were fabricated. Subsequently, the crowns were cemented and artificially aged in a mechanical fatigue device (1.2 X 106 cycles), then divided into 4 groups (n = 15) according to the surface treatment: 1) phosphoric acid etching (PA); 2) PA + silane application; 3) roughening with a diamond bur + PA; and 4) sandblasting with Al2O3 + PA. After the treatments, the crowns (n = 2) were qualitatively analyzed by scanning electron microscope (SEM) and surface roughness (n = 5) was analyzed before and after the surface treatment (Ra parameter). The remaining crowns (n = 8) received standard repair with an adhesive system (Tetric N-Bond) and a nanohybrid CR (Tetric N-Ceram), and the microshear bond strength (SBS) test was performed (0.5 mm/min). Roughness and SBS data were analyzed by one- and two-way ANOVA, respectively, as well as Tukey’s post-test (α = 0.05). Results: Sandblasting with Al2O3 + PA resulted in the highest final roughness and SBS values. The lowest results were observed in the PA group, whereas the silane and diamond bur groups showed intermediate values. Conclusion: It may be concluded that indirect ceromer crowns sandblasted with aluminum oxide prior to PA etching promote increased roughness surface and bond strength values.

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Evaluation of Gaps or Voids Occurring in Roots Filled with Three Different Sealers

European Journal of Dentistry ◽

10.1055/s-0039-1697817 ◽

2010 ◽

Vol 04 (02) ◽

pp. 101-109 ◽

Cited By ~ 5

Author(s):

Melek Akman ◽

Serhan Akman ◽

Oznur Derinbay ◽

Sema Belli

Keyword(s):

In Vitro Study ◽

Gutta Percha ◽

Rotary Instruments ◽

Single Cone ◽

Ah Plus ◽

Root Dentin ◽

The Mean ◽

Free Interfaces ◽

Niti Rotary Instruments

Objectives: The purpose of this in vitro study was to evaluate gaps or voids occurring in roots filled with three different sealers.Methods: Thirty extracted human single-rooted teeth were decoronated, instrumented using NiTi rotary instruments, divided into three groups (n=10 per group) and obturated with one of the following: Epiphany with Resilon, MetaSEAL with gutta-percha or AH Plus with gutta-percha using the match-taper single-cone technique. After storage for one week in 100% humidity at 37°C, the teeth were horizontally sectioned (n=10). Photographs were taken from the coronal, median and apical parts of the roots using a stereomicroscope at 10X magnification, and the images were then transferred to a computer. The mathematical method known as the ‘Affine Transformation’ was used for the transformation of pixel coordinates to ground coordinates in the Netcad Software program. The mean areas (μm2) of the gaps between the sealer and root dentin or gutta percha/resilon and the gaps between the sealer and/or voids inside the sealer mass were measured, scored on a 0-3 scale and statistically analyzed with the Kruskal-Wallis test.Results: The mean total area of gaps or voids for each sealer was 4631.80 μm2 for the Epiphany- Resilon, 3826.80 μm2 for the MetaSEAL-gutta-percha and 31334 μm2 for the AH Plus-gutta-percha. The MetaSEAL-gutta-percha group showed more gap or void-free interfaces. No significant differences were found among the sealers in the scores for the gap areas (P<.05), and the MetaSEAL showed similar interfaces with Epiphany.Conclusions: No significant differences in the mean areas of gaps or voids were found among the tested resin-based sealers. (Eur J Dent 2010;4:101-109)

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Efficacy of ProTaper Retreatment System in Root Canals Obturated with Gutta-Percha Using Two Different Sealers and GuttaFlow

International Journal of Dentistry ◽

10.1155/2011/676128 ◽

2011 ◽

Vol 2011 ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

Jaya Siotia ◽

Shashi Rashmi Acharya ◽

Sunil Kumar Gupta

Keyword(s):

Area Ratio ◽

Variance Test ◽

Root Canals ◽

Gutta Percha ◽

Significant Difference ◽

Ah Plus ◽

Group 3 ◽

Group 2 ◽

Silicon Based ◽

Group 1

Objective. To compare the efficacy of ProTaper retreatment files in removing three different obturating materials.Study Design. Forty-five human, single-rooted premolars were divided into three experimental groups. Group 1 was obturated with gutta-percha and AH Plus sealer, Group 2 was obturated with gutta-percha and zinc oxide eugenol sealer, and Group 3 was obturated with GuttaFlow. Retreatment was done using the ProTaper universal rotary retreatment files. Root halves were visualized using magnifying loops at 3X magnification and optical stereomicroscope at 10X magnification. Images were analyzed using AutoCAD 2004 software to calculate area of the remaining debris in the canal. For statistical analysis were used variance test and ANOVA.Results. Total debris/canal area ratio between the three groups showed a statistically significant difference (P<0.001).Conclusion. ProTaper retreatment system did not produce completely clean canals in any of the groups. However, it had the best efficacy towards removing silicon based obturating material GuttaFlow.

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