scholarly journals Shear bond strength of orthodontic tubes bonded directly with composite resin reinforcement on the enamel surface

2021 ◽  
Vol 10 (16) ◽  
pp. e195101623481
Author(s):  
Tainah Oliveira Rifane ◽  
Ítalo Hudson Tavares Maia ◽  
Andressa Silva de Oliveira ◽  
Ranyele Elis Alexandre Rodrigues ◽  
Francisbênia Alves Silvestre ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Fracture Analysis ◽  
Strength Test ◽  
Enamel Surface ◽  
Tube Surface ◽  
Control Tube ◽  
And Control

To evaluate the shear bond strength and the fracture type of orthodontic tubes bonded directly with composite resin throughout the enamel surface. 30 bovine teeth were cut into 3 slices with 5 mm each and embedded in PVC pipes with acrylic resin exposing the buccal face. Subsequently, the teeth were submitted to conventional bonding techniques. Natural Ortho resin was applied for direct bonding of Edgewise Standard orthodontic tubes (Morelli®) and light-cured for 20s. A different viscosity resin was chosen and light-cured for 40s to reinforce the tube surface. The samples were divided into the following groups: Orthodontic tube with direct bonding without reinforcement (CONTROL), Tube with Natural Ortho resin + Reinforcement (NO + NO), Tube with Natural Ortho resin + Reinforcement with Flow resin (NO + FL). These were submitted to shear bond strength; immediate and 1-year aging fracture analysis after simulated through thermocycling. In the shear bond strength test, the group of orthodontic tubes that were directly bonded with Natural Ortho resin and reinforced (NO + NO) showed greater strength results after 24 hours and 1 year with values of (p=0.0225) and (p=0.0273). It was statistically differentto the NO + FL and CONTROL reinforced groups. In the fracture analysis, the NO +NO group was classified immediately as composite cohesive, and mixed failure after aging by thermocycling. The addition of a composite resin layer on the surface of the directly bonded orthodontic tube improved bond strength. The reinforcement must be carried out in regular consistency and the use of Flow resin is not indicated.

Shear bond strength between acrylic resin teeth and composite resin

2014 ◽  
Vol 30 ◽  
pp. e38-e39
Author(s):  
M.A. Basílio ◽  
K.V. Cardoso ◽  
G.M.R.M. De Souza ◽  
E.M. Mariscal ◽  
J.N. Arioli-Filho
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin

scholarly journals Optimization of Heat-Dried Silane Application for CAD/CAM Ceramic Resin Bonding

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Greciana Bruzi Brasil Pinto ◽  
MAGNE P ◽  
BRUZI G ◽  
CARVALHO A ◽  
ENCISO R ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Boiling Water ◽  
Hot Air Drying ◽  
Air Drying ◽  
Hot Air ◽  
Before And After ◽  
Cad Cam

Purpose. Evaluate surface treatments and silane application methods and their effect on shear bond strength (SBS) before and after aging. Materials and methods. Slices of IPS e.max CAD and Vitablocs Mark II, were embedded in acrylic resin. The block was randomly assigned to 5 groups; E:etching with hydrofluoric acid (HF), rinsing, followed by cleaning in ultrasonic bath; E/S:HFetching and cleaned as group E followed by silane application for 20s, air drying and hot drying; E/S+:HFetching and cleaned as group E, followed by silane application for 60s, air drying and hot air drying, rinsing with boiling water and hot air drying; S:silane application for 20s followed by air drying and hot air drying; S+:silane application for 60s followed by air drying, air drying and hot air drying, rinsing in boiling water and hot drying. Cylinders of composite resin (n=12) were bonded with adhesive. SBS testing was carried out after 24h or after thermocycling for groups E; E/S and E/S+. Results. For 24h SBS showed significantly higher mean bond strength with E/S, for both ceramic, compared to E and E/S+. The use of silane alone showed significantly lower mean bond strength. No significant differences were found between E/S and E/S+ for VITA. The SBS was negatively affected by simulated aging in E/S group and positively in E/S+. Conclusions. The association of HFetching and a heat-dried silane showed to be significant to obtain a high SBS. Furthermore, the optimized silane application is not relevant to the immediate SBS while it enhances after aging.

Resistência de união ao cisalhamento entre a resina composta e dentes artificiais de resina acrílica

2021 ◽  
Vol 10 (40) ◽  
pp. 33-37
Author(s):  
Joyce de Figueiredo Meira Barbosa ◽  
Lara Pepita de Souza Oliveira ◽  
Marcelo Nascimento Bruce ◽  
Jonas Alves Oliveira ◽  
Ligia Regina Mota Vasconcelos ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Single Bond ◽  
Group Iii ◽  
Group I ◽  
Significant Difference ◽  
Artificial Teeth

Acrylic denture teeth may suffer fracture or wear requiring the need for repair. This study aimed to evaluate the shear bond strength between acrylic resin artificial teeth restored with composite resin (with two different surface treatments) and acrylic resin (AR), simulating repair with these materials. Thirty artificial incisors were included by the palatal side in a circular microwave-polymerized AR base and polished on their buccal side with 120 and 320 grit sandpaper in a metallographic polisher and, then, divided into three groups: (I) restoration with self-cured AR; (II) conventional restoration with Z-100 composite resin with application of acid etching and Single Bond-3M adhesive; and (III) restoration with Z-100 composite resin with submersion for 30 seconds in acetone and application of Single Bond-3M adhesive. Shear bond strength tests were performed in a Universal Testing Machine (Instron). The results were submitted to ANOVA and Tukey (p<0.05) tests, in which Group I (33.26MPa ±10.76) and Group III (22.24MPa ±13.13) showed no statistically significant difference, but both were superior to Group II (10.31MPa ±5.62), which showed a lower value of shear bond strength. It can be concluded that composite resin restoration with acetone pretreatment can be a viable alternative for repair.

scholarly journals Effects of surface treatment of provisional crowns on the shear bond strength of brackets

2013 ◽  
Vol 18 (4) ◽  
pp. 29-34 ◽  
Author(s):  
Josiane Xavier de Almeida ◽  
Mauren Bitencourt Deprá ◽  
Mariana Marquezan ◽  
Luciana Borges Retamoso ◽  
Orlando Tanaka
Keyword(s):  
Bond Strength ◽  
Aluminum Oxide ◽  
Surface Treatment ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Acrylic Resin ◽  
Surface Treatments ◽  
Surface Roughening ◽  
Bonding Material ◽  
Adhesive Remnant Index

OBJECTIVE: To assess the adhesive resistance of metallic brackets bonded to temporary crowns made of acrylic resin after different surface treatments. METHODS: 180 specimens were made of Duralay and randomly divided into 6 groups (n = 30) according to surface treatment and bonding material: G1 - surface roughening with Soflex and bonding with Duralay; G2 - roughening with aluminum oxide blasting and bonding with Duralay; G3 - application of monomer and bonding with Duralay; G4 - roughening with Soflex and bonding with Transbond XT; G5 - roughening with aluminum oxide blasting and bonding with Transbond XT and G6: application of monomer and bonding with Transbond. The results were statistically assessed by ANOVA/Games-Howell. RESULTS: The means (MPa) were: G1= 18.04, G2= 22.64, G3= 22.4, G4= 9.71, G5= 11.23, G6= 9.67. The Adhesive Remnant Index (ARI) ranged between 2 and 3 on G1, G2 and G3 whereas in G4, G5 and G6 it ranged from 0 to 1, showing that only the material affects the pattern of adhesive flaw. CONCLUSION: The surface treatment and the material influenced adhesive resistance of brackets bonded to temporary crowns. Roughening by aluminum blasting increased bond strength when compared to Soflex, in the group bonded with Duralay. The bond strength of Duralay acrylic resin was superior to that of Transbond XT composite resin.

scholarly journals Shear bond strength of enamel surface treated with air-abrasive system

2002 ◽  
Vol 13 (3) ◽  
pp. 175-178 ◽  
Author(s):  
Maria Cristina Borsatto ◽  
Alma Blásida Elisaur Benitez Catirse ◽  
Regina Guenka Palma Dibb ◽  
Telma Nunes do Nascimento ◽  
Renata Andréa Salvitti de Sá Rocha ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Aluminum Oxide ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Enamel Surface ◽  
Acid Etching ◽  
Air Abrasion ◽  
Group Iii ◽  
Group I

The aim of this study was to evaluate the shear bond strength of a composite resin to dental enamel, using three different surface treatments. Fifteen sound third molars were randomly assigned to three groups. The mesial and distal surfaces were flattened and covered using adhesive tape with a central orifice delimiting the adhesion area (7.07 mm²). Group I, the enamel surface was conditioned with 37% phosphoric acid for 15 s; group II, the surface was treated using air abrasion with aluminum oxide; group III, the enamel surface was treated using an association of air abrasion with aluminum oxide and 37% phosphoric acid. The Single Bond (3M) adhesive system was applied and a Teflon matrix was placed and filled with composite resin Z-100 (3M) and light-cured. The shear bond strength test was performed with a universal testing machine. The acid etching technique and air abrasion with aluminum oxide associated with acid etching had the highest shear bond strength values. Data were subjected to statistical analysis using ANOVA and the Tukey test, and no statistically significant difference in shear bond strength was observed between group I (12.49 ± 2.85 MPa) and group III (12.59 ± 2.68 MPa). In contrast, both groups had statistically better shear bond strengths compared to group II (0.29 ± 0.56 MPa; p<0.05). Air abrasion with aluminum oxide does not substitute acid etching. The association of these methods to obtain adequate adhesion to the substrate is necessary.

scholarly journals Effect of Fiber Laser Irradiation on the Shear Bond Strength between Acrylic Resin and Titanium

Scanning ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Fatih Mehmet Korkmaz ◽  
Selin Aycan
Keyword(s):  
Bond Strength ◽  
Fiber Laser ◽  
Shear Bond Strength ◽  
Acrylic Resin ◽  
Strength Test ◽  
The Other ◽  
Pairwise Comparisons ◽  
Strength Data ◽  
Post Hoc ◽  
One Way Anova

Objectives. The aim of this study is to investigate the shear bond strength of an acrylic resin to titanium after different surface treatment methods. Material and Methods. A total of seventy-two disc-shaped specimens (10 mm×10 mm×2 mm) were prepared from titanium alloy. The specimens were randomly allocated to six equal groups: Group S (sandblasting), Group MP (metal primer), Group 10W (fiber laser 10 W), Group 20W (fiber laser 20 W), Group 10WMP (fiber laser 10 W+metal primer), and Group 20WMP (fiber laser 20 W+metal primer). All of the specimens were thermocycled up to 5000 cycles. After thermal cycling, a shear bond strength test was conducted. The shear bond strength data were analyzed with one-way ANOVA and Tukey’s post hoc pairwise comparisons (p<0.05). Results. While the highest values were determined in Group MP, the lowest values were observed in Group S. Additionally, Group MP exhibited significantly higher shear bond strength values than any of the other groups (p<0.05) except Group 10WMP. Similar results were observed between Group MP and Group 10WMP (p>0.05). The groups in which a metal primer was applied (Group MP, 10WMP, and 20WMP) showed significantly higher values than Group S. The shear bond strength values of Group 10W and Group 20W were similar. Conclusions. The application of a metal primer significantly improved the bond strength of acrylic resin to titanium. Fiber laser application may be an alternative method to sandblasting for improving the bond strength of acrylic resin to titanium.

scholarly journals Effect of several repair techniques on the bond strength between composite resin and degraded Y-TZP ceramic

2018 ◽  
Vol 21 (4) ◽  
pp. 377
Author(s):  
Vinícius Felipe Wandscher ◽  
Luana Brondani ◽  
Gabriel Kalil Rocha Pereira ◽  
Renata Marques De Melo
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Treatment Protocol ◽  
Acrylic Resin ◽  
Silica Coating ◽  
Cohesive Fracture ◽  
Hydrothermal Degradation

<p><strong>Objective:</strong> To evaluate the bond strength of different repair treatments for composite resin to aged Y-TZP ceramics.  <strong>Material and Methods:</strong> Zirconia blocks were cut into smaller specimens, sintered according to manufacturer’s recommendations (final dimensions of 4×4×3 mm), and randomly allocated into nine groups (n=15) according to the surface treatment and presence/absence of aging of the substrate (subjected to low-temperature degradation - LTD), as follows: without LTD (Control: without treatment; TBS: tribochemical silica coating + silane + adhesive); with LTD (Control-LTD: without treatment; TBS-LTD: TBS with hydrothermal degradation; MoS-LTD: Monobond S + adhesive; MoP-LTD: Monobond Plus + adhesive; MZP-LTD: Metal/Zirconia Primer + adhesive; USB-LTD: Single Bond Universal; AP-LTD: Alloy primer + adhesive). LTD was simulated in an autoclave (134 °C, 2 bar, 5 h). The ceramic blocks were embedded in PVC cylinders with a self-curing acrylic resin; each surface treatment protocol was performed; a composite resin cylinder (Æ: 3.25 mm and height: 3 mm) was then build-up using split metallic matrices. All the specimens were aged (thermocycling + storage in water for 90 days) and subjected to the shear bond strength test using a universal testing machine (1 mm/min). The failure mode was classified into four types: adhesive, composite resin cohesive fracture, ceramic cohesive fracture, and mixed. The bond strength values were subjected to Mann–Whitney test. <strong>Results:</strong> Only air-abraded samples (TBS and TBS–LTD) survived thermocycling. More than 80% of the samples of the other groups presented pre-test failures. TBS groups presented higher values of bond strength (3.94) compared to TBS-LTD (0.96). The predominant type of failure for the surviving samples were adhesive. <strong>Conclusion:</strong> Air particle abrasion is mandatory to improve the bond strength of the Y-TZP substrate; an aged substrate presents an even more unfavorable scenario for adhesion.</p><p><strong>Keywords</strong></p><p> Dental prosthesis repair; Hydrothermal degradation; Zirconia; Shear bond strength; Sandblasting.</p><p> </p>

scholarly journals Evaluation of Surface Conditioning of Zirconia and Its Effect on Bonding to Resin-Luting Agent

2013 ◽  
Vol 3 (1) ◽  
pp. 7-10
Author(s):  
Sonu Gargava ◽  
Sabita M Ram
Keyword(s):  
Bond Strength ◽  
Silicon Dioxide ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Acrylic Resin ◽  
Surface Conditioning ◽  
Luting Agent ◽  
Group A ◽  
Group B

ABSTRACT Zirconia, a recently introduced ceramic exhibits excellent esthetic qualities and demonstrates outstanding flexural strength but its extensive use, requires a reliable bond of Zirconia with resinluting agent. Resin Zirconia bonding cannot be achieved as the material is resistant to common etching procedures used for other glass containing ceramics. With surface conditioning increased adhesion between Zirconia and resin-luting agent can be successfully achieved. Aim Aim of this study was to evaluate surface conditioning of Zirconia and its effect on bonding to resin-luting agent. Materials and Methods Fifteen blocks of Zirconia (VITA Zirconia) were fabricated in the laboratory according to manufacturer's instructions and embedded in acrylic resin to get 15 Zirconia samples. Fifteen composite resin cylinders were prepared one for each Zirconia sample. All the 15 Zirconia samples were divided into three groups of five samples each. Group A: Was kept as control with no surface conditioning done. Group B: Surface conditioning was done with 30 µ silicon dioxide. Group C: Surface conditioning was done with 110 µ aluminum oxide. Composite resin cylinders were cemented on the Zirconia samples using a resin-luting agent (Panavia F). The samples were subjected to universal testing machine to evaluate shear bond strength and the data was statistically analyzed by oneway ANOVA. Results Group A showed least shear bond strength. Shear bond strength of group C was greater than group A while group B showed highest shear bond strength. Conclusion Surface conditioning results in significant increase bond strength between Zirconia and resin-luting agent. Among the two methods surface conditioning with 30 µ silicon dioxide is much better and efficient method. How to cite this article Gargava S, Ram SM. Evaluation of Surface Conditioning of Zirconia and Its Effect on Bonding to Resin-Luting Agent. J Contemp Dent 2013;3(1):7-10.

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