Effect of Irrigants on the Push-Out Bond Strength of Two Bioceramic Root Repair Materials

The purpose of this study was to compare different irrigants’ effect on two EndoSequence root repair materials’ push-out bond strength. Sixty root slices were filled either with EndoSequence premixed fast-set putty or regular-set paste, and then immersed either in sodium hypochlorite, chlorhexidine gluconate, or saline (as control) for 30 min, after which the slices were subjected to the push-out test. The surface structures were evaluated with Scanning Electron Microscopy and Fourier Transform Infrared. Fast-set putty exhibited greater displacement resistance when immersed in saline and subjected to adhesive failure mode, while regular-set paste showed greater resistance when immersed in chlorhexidine and subjected to cohesive failure mode. Infrared analysis showed changes in organic filler, and carbonate and phosphate bands after using irrigants. The lowest carbonate/phosphate ratio was found for chlorhexidine in both materials. Therefore, sodium hypochlorite reduced EndoSequence root repair materials’ displacement resistance markedly.

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Do metal alloy primers increase the bond strength of orthodontic tubes?

Brazilian Journal of Oral Sciences ◽

10.20396/bjos.v18i0.8657247 ◽

2019 ◽

Vol 18 ◽

pp. e191406

Author(s):

Keity Cristina Moreira de Oliveira ◽

Daylana Pacheco da Silva ◽

Cecília Pedroso Turssi ◽

Flávia Lucisano Botelho do Amaral ◽

Vanessa Cavalli

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Analysis Of Variance ◽

Untreated Control ◽

Failure Modes ◽

Adhesive Failure ◽

Cohesive Failure ◽

Thermal Cycles ◽

Exact Test ◽

Bonded Interface

Aim: To evaluate the bond strength (BS) and failure mode of orthodontic tubes treated with different alloy primers at the interface among enamel, resin and orthodontic tubes. Methods: Orthodontic tubes were bonded to the enamel of 80 bovine incisors with the orthodontic resin (Transbond XT, 3M Unitek). Prior to bonding, the tubes were chemically treated with (n=20) Metal/Zirconia Primer (MZ, Ivoclar), Scothbond Universal (SB, 3M Espe); Orthoprimer (OP, Morelli) or left untreated (Control - C). Specimens were submitted to 5,000 thermal cycles (5 and 55o C) to age the bonded interface. A shear BS test and failure modes were conducted, and the results were analyzed using one-way analysis of variance and Fisher’s exact test, respectively. Results: No differences were observed among groups regardless of the type of alloy primer used (p = 0.254). However, no differences were observed among the failure modes of the groups tested (p=0.694). The adhesive failure mode between the resin and enamel was the most prevalent failure (45%) for groups OP and C, whereas cohesive failure in the orthodontic resin was the most prevalent failure (40%) for groups SB and MZ. Conclusion: Alloy primers were unable to increase the BS of the orthodontic tubes to enamel.

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Push-Out Bond Strength of Experimental Apatite Calcium Phosphate Based Coated Gutta-Percha

International Journal of Biomaterials ◽

10.1155/2018/1731857 ◽

2018 ◽

Vol 2018 ◽

pp. 1-5 ◽

Cited By ~ 5

Author(s):

Afaf Y. Al-Haddad ◽

Muralithran G. Kutty ◽

Zeti Adura Che Ab Aziz

Keyword(s):

Calcium Phosphate ◽

Bond Strength ◽

Failure Mode ◽

Failure Modes ◽

Test Machine ◽

Filling Material ◽

Cohesive Failure ◽

Root Canal Filling ◽

Gutta Percha ◽

Push Out

Objectives. To evaluate the push-out bond strength of experimental apatite calcium phosphate coated gutta-percha (HAGP) compared to different commercially available coated gutta-percha root obturation points. Methods. Extracted teeth were selected and instrumented using ProTaper rotary files. The canals were assigned into five equal groups and obturated using matching single cone technique as follows: EndoREZ cones and EndoREZ sealer, Bioceramic Endosequence gutta-percha (BCGP) with Endosequence BC sealer, Active GP with Endosequence BC sealer (ActiV GP), conventional GP with Endosequence BC sealer, and HAGP with Endosequence BC sealer. Each root was sectioned transversally at the thickness of 1±0.1 mm to obtain 5 sections (n=25 per group). The specimens were subjected to push-out test using a Universal Test Machine at a loading speed of 0.5 mm/ min. Failure modes after push-out test was examined under stereomicroscope and the push-out data were analyzed using ANOVA and the post hoc Dunnett T3 test (p = 0.05). Results. The highest mean bond strength was yielded by HAGP followed by BCGP, ActiV GP, conventional GP, and EndoREZ. There were significant differences between EndoREZ and all other groups (p<0.001). The prominent failure mode of HAGP was mixed mode, whereas EndoREZ exhibited adhesive failure mode. Conventional GP, ActiV GP, and BCGP showed cohesive failure mode. Conclusion. HAGP showed promising results to be used as root canal filling material in combination with bioceramic sealer.

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Comparative evaluation of the effect of various endodontic irrigants on the push-out bond strength of endosequence, Biodentine™, and MTA Plus™ root repair materials: An in vitro study

Journal of the International Clinical Dental Research Organization ◽

10.4103/jicdro.jicdro_3_19 ◽

2019 ◽

Vol 11 (1) ◽

pp. 9

Author(s):

Nitika Tiwari ◽

AnamikaC Borkar ◽

Anita Tandale ◽

Nikhil Nighot ◽

Sailee Ghare ◽

...

Keyword(s):

Bond Strength ◽

Comparative Evaluation ◽

In Vitro Study ◽

Vitro Study ◽

Root Repair ◽

Repair Materials ◽

Push Out

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Repair Bond Strength of Composite to Zirconia Ceramic Using Two Types of Zirconia Primers

Frontiers in Dentistry ◽

10.18502/fid.v16i5.2279 ◽

2020 ◽

Author(s):

Hoseinali Mahgoli ◽

Mahnaz Arshad ◽

Kamran Rasouli ◽

Ali Akbar Sobati ◽

Ahmad Reza Shamshiri

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Zirconia Ceramic ◽

Adhesive Failure ◽

Cohesive Failure ◽

Simultaneous Application ◽

All Ceramic ◽

The Mean

Objectives: This study aimed to assess the effect of application of two types of zirconia primers on repair bond strength of composite to zirconia ceramic. Materials and Methods: In this in vitro, experimental study, 60 zirconia blocks were divided into five groups and subjected to the application of Z-Prime Plus (ZPP), Monobond Plus (MBP), Porcelain Bonding Resin (PBR), ZPP followed by PBR (ZPP+PBR) and MBP followed by PBR (MBP+PBR). They were then bonded to Z100 composite. The samples were then immersed in water at 37°C for 24 hours, thermocycled for 1000 cycles between 5-55°C and subjected to shear bond strength (SBS) test. The mode of failure was determined under a stereomicroscope and a scanning electron microscope (SEM). Results: The mean bond strength was the highest in ZPP+PBR group followed by MBP+PBR, ZPP, PBR and MBP group (22.29±8.86, 15.75±2.81, 12.02±3.24, 3.60±2.92 and 2.92±1.78 MPa, respectively). The effects of type of zirconia primer and use/no use of PBR on SBS were significant (P<0.05). The frequency of adhesive failure in MBP and PBR groups was significantly higher than that in MBP+PBR and ZPP+PBR groups (P<0.05). The cohesive failure was significantly more frequent in ZPP+PBR group than in ZPP, MBP and PBR groups (P<0.05). Conclusion: Simultaneous application of zirconia primer and PBR is the most efficient technique for repair of all-ceramic zirconia restorations with composite resin.

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

Brazilian Dental Journal ◽

10.1590/0103-6440201902491 ◽

2019 ◽

Vol 30 (4) ◽

pp. 350-355 ◽

Cited By ~ 1

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.

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Evaluation of the interaction between sodium hypochlorite and several formulations containing chlorhexidine and its effect on the radicular dentin-SEM and push-out bond strength analysis

Microscopy Research and Technique ◽

10.1002/jemt.22307 ◽

2013 ◽

Vol 77 (1) ◽

pp. 17-22 ◽

Cited By ~ 7

Author(s):

Miriam Graziele Magro ◽

Milton Carlos Kuga ◽

Keli Regina Victorino ◽

Fernando Antonio Vázquez-Garcia ◽

Arturo Javier Aranda-Garcia ◽

...

Keyword(s):

Bond Strength ◽

Sodium Hypochlorite ◽

Strength Analysis ◽

Push Out

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Push-out Bond Strength of Root-end Filling Materials

Brazilian Dental Journal ◽

10.1590/0103-6440201600340 ◽

2016 ◽

Vol 27 (3) ◽

pp. 332-335 ◽

Cited By ~ 6

Author(s):

Rodrigo Ricci Vivan ◽

Juliane Maria Guerreiro-Tanomaru ◽

Roberta Bosso-Martelo ◽

Bernardo Cesar Costa ◽

Marco Antonio Hungaro Duarte ◽

...

Keyword(s):

Zinc Oxide ◽

Bond Strength ◽

Mechanical Test ◽

Test Machine ◽

Adhesive Failure ◽

Root Canal Preparation ◽

Significance Level ◽

Tukey Test ◽

Filling Materials ◽

Push Out

Abstract The aim of this study was to evaluate the bond strength of root-end filling materials. Forty 2-mm-thick slices were obtained from human single-rooted teeth. After root canal preparation using a 1.5 mm diameter cylindrical drill, the dentinal walls were prepared by diamond ultrasonic tip (CVD T0F-2). The specimens were divided according the material (n=10): MTA Angelus (MTAA), MTA Sealer (MTAS, experimental), Sealer 26 (S26) and zinc oxide and eugenol cement (ZOE). The push-out test was performed in a mechanical test machine (EMIC DL 2000) at 1 mm/min speed. The failure type was evaluated by stereomicroscopy. The results were subjected to ANOVA and Tukey test, at 5% significance level. MTAA (19.18 MPa), MTAS (19.13 MPa) and S26 (15.91 MPa) showed higher bond strength (p<0.05). ZOE (9.50 MPa) showed the least bond strength values (p<0.05). Adhesive failure was prevalent in all groups, except for ZOE, which showed mixed failures. It was concluded that root-end filling materials MTA Angelus, MTA Sealer and Sealer 26 showed higher bond strength to dentinal walls than zinc oxide and eugenol cement after retrograde preparation.

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