scholarly journals Laser-Milled Microslits Improve the Bonding Strength of Acrylic Resin to Zirconia Ceramics

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 817
Author(s):  
Saiji Shimoe ◽  
Tzu-Yu Peng ◽  
Yuki Wakabayashi ◽  
Hiroto Takenaka ◽  
Shogo Iwaguro ◽  
...  
Keyword(s):  
Bond Strength ◽  
Bonding Strength ◽  
Failure Modes ◽  
Acrylic Resin ◽  
Thermal Cycles ◽  
Air Abrasion ◽  
Zirconia Ceramics ◽  
Interface Failure ◽  
Bonding Durability ◽  
Strength And Durability

Heightened aesthetic considerations in modern dentistry have generated increased interest in metal-free “zirconia-supported dentures.” The lifespan of the denture is largely determined by the strength of adhesion between zirconia and the acrylic resin. Thus, the effect on shear bond strength (SBS) was investigated by using an acrylic resin on two types of zirconia ceramics with differently sized microslits. Micromechanical reticular retention was created on the zirconia surface as the novel treatment (microslits (MS)), and air-abrasion was used as the control (CON). All samples were primed prior to acrylic resin polymerization. After the resin was cured, the SBS was tested. The obtained data were analyzed by using multivariate analysis of variance(α = 0.05). After the SBS test, the interface failure modes were observed by scanning electron microscopy. The MS exhibited significantly higher bond strength after thermal cycles (p < 0.05) than the CON. Nevertheless, statistically comparisons resulted in no significant effect of the differently sized microslits on SBS (p > 0.05). Additionally, MS (before thermal cycles: 34.8 ± 3.6 to 35.7 ± 4.0 MPa; after thermal cycles: 26.9 ± 3.1 to 32.6 ± 3.3 MPa) demonstrated greater SBS and bonding durability than that of CON (before thermal cycles: 17.3 ± 4.7 to 17.9 ± 5.8 MPa; after thermal cycles: 1.0 ± 0.3 to 1.7 ± 1.1 MPa), confirming that the micromechanical retention with laser-milled microslits was effective at enhancing the bonding strength and durability of the acrylic resin and zirconia. Polycrystalline zirconia-based ceramics are a newly accessible material for improving removable prosthodontic treatment, as the bond strength with acrylic resin can be greatly enhanced by laser milling.

scholarly journals Effect of Sealant Application and Thermal Cycling on Bond Strength of Tissue Conditioners to Acrylic Resin

2013 ◽  
Vol 24 (3) ◽  
pp. 247-252 ◽  
Author(s):  
Francisca Neta Cruz Soares Sampaio ◽  
Jose Renato Ribeiro Pinto ◽  
Cecilia Pedroso Turssi ◽  
Roberta Tarkany Basting
Keyword(s):  
Bond Strength ◽  
Thermal Cycling ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Tensile Bond Strength ◽  
Thermal Cycles ◽  
Bond Failure ◽  
Universal Testing ◽  
Soft Liner ◽  
Tissue Conditioner

The aim of this study was to evaluate the effect of sealer application and thermal cycling on the bond strength between tissue conditioners and acrylic resin, and to observe the type of bond failure. Two hundred eighty-eight specimens (10x16x3 mm) were made of an acrylic resin (Lucitone 500, Dentsply) using a metal muffle. Specimens were divided into four groups according to the tissue conditioner (Coe-Comfort, GC or Dentusoft, Densell) used and whether or not a sealer (Eversoft Soft Liner Sealer, Myerson) was applied. Each of the four groups was subdivided into other six subgroups (n=12) to undergo thermocycling for 45, 90, 135, 180 or 210 cycles with a dwell time of 60 s, or to be left non thermocycled (control). Tensile bond strength was measured in a universal testing machine at a crosshead speed of 5 mm/min. Sealant application had no effect on the tensile bond strength of the relined acrylic resin, regardless of the tissue conditioner used (Coe-Comfort: p=0.306 and Dentusoft: p=0.1501). The number of thermal cycles had a significant effect on the tensile bond strength of the relined acrylic resin (Coe-Comfort: p=0.002 and Dentusoft: p<0.001). Both tissue conditioners presented similar bond strength to acrylic resin. For both tissue conditioners, sealer coatings had no influence on bond strength, while different numbers of thermal cycles affected that mechanical property.

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

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.

scholarly journals Effects of surface treatments on the bond strength of glass hybrid restorative system repaired with hybrid composite resin

2018 ◽  
Vol 8 (3) ◽  
pp. 131-138
Author(s):  
Banu Arıcıoğlu ◽  
Ömer Hatipoğlu
Keyword(s):  
Bond Strength ◽  
Hybrid Composite ◽  
Bonding Strength ◽  
Testing Machine ◽  
Glass Ionomer Cement ◽  
Surface Treatments ◽  
Composite Resins ◽  
Air Abrasion ◽  
Post Hoc ◽  
Bond Method

Aim: To assess the bonding strength of the Equia Forte resin modified glass ionomer cement to the hybrid composite material by applying different surface treatments. Methodology: 140 samples as 70 Equia Forte and 70 G-eanial composites were produced as 8 mm diameter 3 mm high cylindrical standardized samples. The samples were divided into 7 groups to treat surfaces. G-eanial composite resins as 4 mm diameter 3 mm high was placed onto the samples and polymerized. Then 1000 thermal cycle was applied and samples were mounted in the universal testing machine. Obtained bond strength values were recorded as Newton. One way Anova and Scheffe post hoc tests were performed for statistics. Results: In the G-aenial group, the highest bond strength was obtained with laser-bond method (N=17.71, P<0.05) and the lowest bonding strength was obtained with only laser-treated method (N=3.45, P<0.05). In the Equia group, the highest bond strength was obtained with air abrasion-bond method (N=9.29, P<0.05) and the lowest bonding strength was obtained with only laser-treated method (N=0.00, P<0.05). Conclusion: The fact that sufficient bond strength could not be reached by any surface treatment in Equia Forte may suggest that replacing the Equia Forte instead of repairs may be a better choice.

scholarly journals Resin Bonding using Etch-and-Rinse and Self-etch Adhesives to Decalcified Deciduous Enamel after Bioactive Glass Air Abrasion

2014 ◽  
Vol 15 (5) ◽  
pp. 595-602
Author(s):  
Maryam Khoroushi ◽  
Alireza Eshghi ◽  
Alireza Rezvani
Keyword(s):  
Bond Strength ◽  
Bioactive Glass ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Superficial Layer ◽  
Deciduous Teeth ◽  
Air Abrasion ◽  
Etch And Rinse ◽  
Self Etch ◽  
Resin Bonding

ABSTRACT Purpose Bioactive glass air abrasion is a conservative technique for removal of initial decalcified enamel superficial layer and caries vs alumina air abrasion. This study evaluated shear bond strength of composite resin to sound and decalcified deciduous enamel using etch-and-rinse and self-etch adhesives after alumina and bioactive glass air abrasion. Materials and methods Ninety-six flat enamel surfaces, mounted in acrylic resin, were prepared from 48 deciduous molars. Half of the specimens were decalcified with a demineralizing solution. Both intact and decalcified specimens were assigned to two groups for alumina and bioactive glass air abrasion. In each group, the specimens were subdivided into two groups for application of Clearfil SE Bond or Optibond FL adhesives (n = 12). After composite resin bonding, the specimens underwent shear bond test. Data were analyzed using three-way analysis of variance (ANOVA), linear regression model and independentsample t-test (á = 0.05). Results No significant differences were noted in bond strength of composite resin after alumina or bioactive glass air abrasion (p = 0.272). Optibond FL adhesive and enamel decalcification produced higher bond strength (p = 0.000, p = 0.001 respectively). Conclusion In this study, bioactive glass air abrasion produced bond strength comparable to the conventional method. This technique might be an alternative method for preparation of normal and/or decalcified enamel of deciduous teeth for resin bonding. How to cite this article Eshghi A, Khoroushi M, Rezvani A. Resin Bonding using Etch-and-Rinse and Self-etch Adhesives to Decalcified Deciduous Enamel after Bioactive Glass Air Abrasion. J Contemp Dent Pract 2014;15(5):595-602.

scholarly journals Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin

2016 ◽  
Vol 17 (2) ◽  
pp. 154-159 ◽  
Author(s):  
Farzaneh Ahrari ◽  
Mohammadreza Nakhaei ◽  
Hossein Dashti ◽  
Samaneh Vasigh ◽  
Shazia Mushtaq ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bond Strength ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Control Group ◽  
Air Abrasion ◽  
Denture Base ◽  
Base Resin ◽  
Denture Base Resin

ABSTRACT Aim The aim of this study is to evaluate the effects of three different surface treatments and thermocycling on the tensile strength of a silicone lining material to denture resin. Materials and methods A total of 96 cube-shaped specimens were fabricated using heat-cured polymethyl methacrylate (PMMA) denture base resin. Three millimeters of the material was cut from the midsection. The specimens were divided into four groups. The bonding surfaces of the specimens in each group received one of the following surface treatments: no surface treatment (control group), airborne particle abrasion with 110 μm alumina particles (air abrasion group), Er:yttrium aluminum garnet laser irradiation (laser group), and air abrasion + laser. After the lining materials were processed between the two PMMA blocks, each group was divided into two subgroups (n = 12), either stored in distilled water at 37°C for 24 hours or thermocycled between 5 and 55°C for 5,000 cycles. The specimens were tested in tensile and shear strength in a universal testing machine. Data were analyzed with two-way analysis of variance and Tamhane's post hoc tests (α = 0.05). The mode of failure was determined, and one specimen in each group was examined by scanning electron microscopy. Results Surface-treated groups demonstrated significantly higher tensile strengths compared to the control group (p < 0.001). Nonetheless, no significant differences were found between surface-treated groups (p > 0.05). The tensile strength was significantly different between thermocycled and waterstored specimens (p = 0.021). Conclusion Altering the surface of the acrylic denture base resin with air abrasion, laser, and air abrasion + laser increased the tensile strength. Thermocycling resulted in decrease in bond strength of silicone-based liner to surface-treated acrylic resin. Clinical significance Pretreatment of denture base resins before applying the soft liner materials improves the bond strength. However, thermocycling results in decrease in bond strength of soft denture liner to surface-treated acrylic resin. How to cite this article Nakhaei M, Dashti H, Ahrari F, Vasigh S, Mushtaq S, Shetty RM. Effect of Different Surface Treatments and Thermocycling on Bond Strength of a Silicone-based Denture Liner to a Denture Base Resin. J Contemp Dent Pract 2016;17(2):154-159.

scholarly journals Evaluation of Chemical Treatment on Zirconia Surface with Two Primer Agents and an Alkaline Solution on Bond Strength

2012 ◽  
Vol 37 (6) ◽  
pp. 625-633 ◽  
Author(s):  
FC Lorenzoni ◽  
VP Leme ◽  
LA Santos ◽  
PCG de Oliveira ◽  
LM Martins ◽  
...  
Keyword(s):  
Bond Strength ◽  
Alkaline Solution ◽  
Chemical Treatment ◽  
Failure Modes ◽  
Surface Group ◽  
Acrylic Resin ◽  
Resin Cement ◽  
Control Group ◽  
Dihydrogen Phosphate ◽  
Naoh Solution

SUMMARY Objectives This study evaluated the effect of an alkaline solution and two 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based primer agents on bond strength to zirconia (yttria-stabilized tetragonal zirconium polycrystal [Y-TZP]) through the shear bond strength (SBS) test. Materials and Methods Sixty square-shaped Y-TZP samples were embedded in an acrylic resin mold, polished, and randomly assigned to one of six groups (n=10) according to treatment surface: group CR, no treatment (control); group NaOH, 0.5 M NaOH; group AP, Alloy Primer; group ZP, Z-Primer Plus; group NaOH-AP, 0.5 M NaOH + Alloy Primer; and group NaOH-ZP, 0.5 M NaOH + Z-Primer Plus. The resin cement (Rely X U100) was applied inside a matrix directly onto the Y-TZP surface, and it was light-cured for 40 seconds. The samples were stored in distilled water at 37°C for 24 hours prior to the test, which was performed in a universal machine at a crosshead-speed of 0.5 mm/min. The data were analyzed by one-way analysis of variance and Tukey tests (p&lt;0.05). Light stereomicroscopy and scanning electron microscopy were used to assess the surface topography and failure mode. Results The SBS was significantly affected by the chemical treatment (p&lt;0.0001). The AP group displayed the best results, and the use of NaOH did not improve SBS results relative to either AP or ZP. The samples treated with Alloy Primer displayed mainly mixed failures, whereas those conditioned with Z-Primer Plus or with 0.5 M NaOH presented a balanced distribution of adhesive and mixed failure modes. Conclusions The use of a NaOH solution may have modified the reactivity of the Y-TZP surface, whereas the employment of a MDP/6-4-vinylbenzyl-n-propyl amino-1,3,5-triazine-2,4-dithione–based primer enhanced the Y-TZP bond strength.

scholarly journals Bond strength of a composite resin to an adhesive luting cement

2010 ◽  
Vol 21 (4) ◽  
pp. 322-326 ◽  
Author(s):  
Taciana Marco Ferraz Caneppele ◽  
Lucas V. Zogheib ◽  
Isabela Gomes ◽  
Andressa S. Kuwana ◽  
Clóvis Pagani
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Adhesive System ◽  
Air Abrasion ◽  
Adhesive Luting ◽  
Luting Cement ◽  
Pre Treatment

This study evaluated the influence of surface treatment on the shear bond strength of a composite resin (CR), previously submitted to the application of a temporary cement (TC), to an adhesive luting cement. Eight-four CR cylinders (5 mm diameter and 3 mm high) were fabricated and embedded in acrylic resin. The sets were divided into 6 groups (G1 to G6) (n=12). Groups 2 to 6 received a coat of TC. After 24 h, TC was removed and the CR surfaces received the following treatments: G2: ethanol; G3: rotary brush and pumice; G4: air-abrasion; G5: air-abrasion and adhesive system; G6: air-abrasion, acid etching and adhesive system. G1 (control) did not receive TC or any surface treatment. The sets were adapted to a matrix and received an increment of an adhesive luting cement. The specimens were subjected to the shear bond strength test. ANOVA and Tukeyʼs tests showed that G3 (8.53 MPa) and G4 (8.63 MPa) differed significantly (p=0.001) from G1 (13.34 MPa). The highest mean shear bond strength values were found in G5 (14.78 MPa) and G6 (15.86 MPa). Air-abrasion of CR surface associated with an adhesive system provided an effective bond of the CR to the adhesive luting cement, regardless the pre-treatment with the phosphoric acid.

Shear bond strength of a denture base acrylic resin and gingiva-colored indirect composite material to zirconia ceramics

2017 ◽  
Vol 61 (2) ◽  
pp. 149-157 ◽  
Author(s):  
Kei Kubochi ◽  
Futoshi Komine ◽  
Ryosuke Fushiki ◽  
Shogo Yagawa ◽  
Serina Mori ◽  
...  
Keyword(s):  
Composite Material ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Acrylic Resin ◽  
Zirconia Ceramics ◽  
Denture Base ◽  
Indirect Composite

Effect of Different Surface Applications and Adhesive Systems on Bond Strength of Porcelain Repair Material

2011 ◽  
Vol 493-494 ◽  
pp. 643-648
Author(s):  
Bilge Tarcin ◽  
Gulden Sinmazisik ◽  
Fusun Ozer ◽  
Turgut Gülmez
Keyword(s):  
Bond Strength ◽  
Er:Yag Laser ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Adhesive System ◽  
Surface Treatments ◽  
Adhesive Systems ◽  
Air Abrasion ◽  
Adhesive Application ◽  
Self Etch

The purpose of this study was to evaluate the effect of different surface treatments and adhesive systems on bond strength of composite resin to porcelain when there is need to repair the restoration.Materials and methods: Rectangular discs (10mm x 12mm) with a height of 2mm were prepared from leucite-reinforced feldspathic ceramic CAD/CAM blocks (Vitablocs), embedded in acrylic resin, and bur cut porcelain surfaces were created. The specimens were divided into three groups (n=20) according to the surface treatments: Er:YAG laser at 2W for 20 seconds, air abrasion with 50µm Al2O3 at 2.5 bar for 15 seconds, and the last group left untreated as control. After silane (Monobond S) application on ten specimens from each group, composite rods (Aelite Flo LV) with 4.25mm diameter and 4mm height were bonded to ceramic surfaces with a self-etch adhesive system (All-Bond SE). The remaining ten specimens from each group were etched with 36% orthophosphoric acid (Blue Etch Dental Etching Gel), and after silane and bonding agent (One-Step Plus) application composite rods with the mentioned dimensions were bonded. All groups were stored in distilled water at 37°C for one day before mechanical testing. Shear testing of all groups were performed on a universal testing machine with a load cell of 50kg and at a crosshead speed of 1.5mm/min. Results were statistically analyzed using Mann Whitney U and Kruskall Wallis tests.Results: The bond strength values of the self-etch adhesive system in the lased and control groups were statistically higher in comparison to the other adhesive system (p<0.01, p<0.05, respectively). The highest bond strength values were obtained in the Er:YAG lased and self-etch adhesive applied group.Conclusions: When there is need to repair of a porcelain restoration, a self-etch adhesive application after Er:YAG laser treatment could be the method of choice.

scholarly journals Investigating the shear bond strength of five resin-based luting agents to zirconia ceramics

2020 ◽  
Vol 62 (1) ◽  
pp. 84-88
Author(s):  
Xiuju Liu ◽  
Xue Jiang ◽  
Tong Xu ◽  
Qi Zhao ◽  
Song Zhu
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Zirconia Ceramics ◽  
Luting Agents
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