scholarly journals Influence of disinfectant solutions on the tensile bond strength of a fourth generation dentin bonding agent

2000 ◽  
Vol 14 (2) ◽  
pp. 107-111 ◽  
Author(s):  
Jorge Saldivar BOCANGEL ◽  
Alex O. E. KRAUL ◽  
Absalon G. VARGAS ◽  
Flávio Fernando DEMARCO ◽  
Edmir MATSON
Keyword(s):  
Bond Strength ◽  
Tensile Bond Strength ◽  
Bonding Agent ◽  
Fourth Generation ◽  
Dentin Bonding ◽  
Group 4 ◽  
Dentin Bonding Agent ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

The purpose of the present study was to evaluate the influence of different disinfectant solutions on the tensile bond strength of a fourth generation dentin bonding agent. Forty non carious human molars were selected. Teeth were embedded in acrylic resin and ground until the exposure of a flat superficial dentin surface. Teeth were randomly divided in 4 groups and treated as follows: Group 1 - 2.5% NaOCl for 40 seconds; Group 2 - 2% chlorhexidine for 40 seconds; Group 3 - 1.23% acidulated fluoride for 4 minutes; and Group 4 - control (without disinfectant solution). Following treatments, Scotchbond Multipurpose Plus® (3M) was used according to the manufacturer’s instructions. After that, the test specimens were built with composite resin (Z100®-3M), using a standard Teflon matrix. The specimens were stored in distilled water for 24 hours at a temperature of 37ºC. The tensile strength test was performed using a Mini Instrom testing machine. The mean values obtained for each group, in MPa, were: Group 1 - 7.37 (± 2.51); Group 2 - 11.25 (± 4.65); Group 3 - 9.80 (± 3.11); and Group 4 - 10.96 (± 3.37). The results were submitted to statistical analysis using the ANOVA test, and no statistical significant differences among the groups were found. It can be concluded that the different disinfectant substances used in this research do not adversely affect dentin adhesion.

scholarly journals The Effects of Prophylactic Ozone Pretreatment of Enamel on Shear Bond Strength of Orthodontic Brackets Bonded with Total or Self-Etch Adhesive Systems

2010 ◽  
Vol 04 (04) ◽  
pp. 367-373 ◽  
Author(s):  
Sevi Burcak Cehreli ◽  
Asli Guzey ◽  
Neslihan Arhun ◽  
Alev Cetinsahin ◽  
Bahtiyar Unver
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Orthophosphoric Acid ◽  
Ozone Treatment ◽  
Bond Failure ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Self Etch ◽  
Group 1

Objectives: The aim of this in vitro study is to determine (1) shear bond strength (SBS) of brackets bonded with self-etch and total-etch adhesive after ozone treatment (2) bond failure interface using a modified Adhesive Remnant Index (ARI).Methods: 52 premolars were randomly assigned into four groups (n=13) and received the following treatments: Group 1: 30 s Ozone (Biozonix, Ozonytron, Vehos Medikal, Ankara, Turkey) application + Transbond Plus Self-Etching Primer (SEP) (3M) + Transbond XT (3M), Group 2: Transbond Plus SEP + Transbond XT, Group 3: 30 s Ozone application + 37% orthophosphoric acid + Transbond XT Primer (3M) + Transbond XT, Group 4: 37% orthophosphoric acid + Transbond XT Primer + Transbond XT. All samples were stored in deionised water at 37oC for 24 hours. Shear debonding test was performed by applying a vertical force to the base of the bracket at a cross-head speed of 1 mm/min.Results: The mean SBS results were Group 1: 10.48 MPa; Group 2: 8.89 MPa; Group 3: 9.41 MPa; Group 4: 9.82 MPa. One-Way Variance Test revealed that the difference between the groups was not statistically significant (P=0.267). Debonded brackets were examined by an optical microscope at X16 magnification to determine the bond failure interface using a modified ARI. The results were (mean) Group 1: 2.38; Group 2: 1.31; Group 3: 3.00; Group 4: 1.92. Multiple comparisons showed that Groups 1 and 2, 2 and 3, 3 and 4 were statistically different (P=0.014, P<.001 and P=0.025).Conclusions: Ozone treatment prior to bracket bonding does not affect the shear bond strength. (Eur J Dent 2010;4:367-373)

scholarly journals Evaluation of shear bond strength of composite to porcelain according to surface treatment

2003 ◽  
Vol 14 (2) ◽  
pp. 132-135 ◽  
Author(s):  
Claudia Minami Kussano ◽  
Gerson Bonfante ◽  
José Gilmar Batista ◽  
João Henrique Nogueira Pinto
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Hydrofluoric Acid ◽  
Shear Bond Strength ◽  
Room Temperature ◽  
Force Load ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

This study evaluated the shear bond strength of porcelain/composite using 40 metal + porcelain + composite cylindrical specimens divided into 4 groups, according to porcelain surface treatment: 1) no treatment, 2) mechanical retentions performed with diamond burs, 3) etching with phosphoric acid+silane, and 4) etching with hydrofluoric acid+silane. After being stored in distilled water at room temperature for one week, the specimens were submitted to a shear force (load) and the data were analyzed statistically (ANOVA). The means (in Mpa) of the groups were: 4.71 (group 1); 4.81 (group 2); 11.76 (group 3); 11.07 (group 4). There were no statistically significant differences between groups 1 and 2 and between groups 3 and 4.

scholarly journals A Comparative Evaluation of Three Commercially Available Dentin Desensitizers on the Shear Bond Strength of Composite Resins: An in vitro Study

2015 ◽  
Vol 5 (2) ◽  
pp. 65-68
Author(s):  
Shruti Patil ◽  
Prajna Shetty
Keyword(s):  
Bond Strength ◽  
Comparative Evaluation ◽  
Shear Bond Strength ◽  
In Vitro Study ◽  
Composite Resins ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

ABSTRACT Background The dentin desensitizers available for in-office application for prevention and/or treatment of post restorative dentinal hypersensitivity, act by blocking the open dentinal tubules. In doing so, they may influence the bond strength of the restorative resins. Thus, the aim of the study was to evaluate the effect of desensitizers on the shear bond strength of dentin adhesives and to check the extent of dentinal tubule occlusion caused by these desensitizers. Materials and Methods Sixty-four premolars were randomly divided into four groups of sixteen each. The middle depth dentin was exposed by on the buccal surface and was etched using 37% phosphoric acid and rinsed. They were assigned to, Group 1: Gluma desensitizer, Group 2: Vivasens desensitizer, Group 3: Gluma Comfort Bond and desensitizer, and Group 4: Adper Single Bond 2. Composite resin post of 2 mm in height and width were built on these specimens. The samples were then mounted in acrylic resin blocks. Universal testing machine was used to test the shear bond strength. The data were analyzed using one-way analysis of variance (ANOVA) and post hoc Tukey's test. Results The mean values of the shear bond strength were for: Group 1—18.61 ± 1.03 MPa, Group 2—17.53 ± 1.36 MPa, Group 3—22.63 ± 1.61 MPa and Group 4—23.12 ± 1.02 MPa. There was a statistically significant difference (p < 0.05) among the groups. Conclusion The use of dentin desensitizers’ influences bond strength between the tooth and the adhesive. Among the various agents, the single bottle system containing Gluma comfort bond and desensitizer had the best adhesion among the desensitizer groups. How to cite this article Patil S, Naik B, Shetty P. A Comparative Evaluation of Three Commercially Available Dentin Desensitizers on the Shear Bond Strength of Composite Resins: An in vitro Study. J Contemp Dent 2015;5(2):65-68.

scholarly journals Effect of Ozone Application on the Resin-dentin Microtensile Bond Strength

2011 ◽  
Vol 36 (5) ◽  
pp. 537-544 ◽  
Author(s):  
PCF Rodrigues ◽  
JB Souza ◽  
CJ Soares ◽  
LG Lopes ◽  
C Estrela
Keyword(s):  
Bond Strength ◽  
Sodium Ascorbate ◽  
Acid Etching ◽  
Microtensile Bond Strength ◽  
Group 4 ◽  
Caries Treatment ◽  
Antioxidant Agents ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

SUMMARY When ozone is used during caries treatment, bond strength can be compromised by the release of oxygen. The use of antioxidant agents neutralizes the free oxygen. The aim of this study was to evaluate the effects of ozone and sodium ascorbate on resin-dentin microtensile bond strength (μTBS). Forty human third molars were divided into four groups: Group 1, not treated with ozone; Group 2, ozone application followed by acid etching; Group 3, acid etching followed by ozone application; and Group 4, ozone and application of sodium ascorbate. Bonded beams (1.0 mm2) were tested under tension (0.5 mm min−1). The μTBS values were analyzed using one-way analysis of variance (ANOVA) and the Tukey test (p=0.05). All beams that fractured were analyzed under stereomicroscopy (40×). Group 1 had significantly higher μTBS values than Group 2 or 3. The μTBS values of Groups 1 and 4 were similar and higher than those of Group 2. The use of ozone in Group 2 resulted in lower values of μTBS in all conditions evaluated. The predominant failure mode was adhesive. The application of ozone decreased the μTBS of the dentin-composite resin interface. These values were reversed when compared with Groups 1 and 2 when sodium ascorbate was used.

scholarly journals Effect of Different Bonding Conditions on the Shear Bond Strength of Two Compomers to Bovine Dentin

2006 ◽  
Vol 7 (4) ◽  
pp. 9-16 ◽  
Author(s):  
Hend Al-Nahedh ◽  
Nasrien Ateyah
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Acid Etching ◽  
Group 4 ◽  
Mode Of Failure ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

Abstract Aim Despite the improvements to compomer materials, the bond strength of these materials remains inferior to .composite/resin bonding. systems and limits their clinical use. The purpose of this study was to evaluate the effect of acidic conditioning with phosphoric acid and Prompt L-Pop (PLP) on the shear bond strength of two compomers Dyract AP (DAP) and Composan Glass (CG) to dentin. Methods and Materials Sixty extracted bovine teeth were used to test the shear bond strength of two compomers to flat dentin labial surfaces. The dentin specimens were randomly assigned to six groups of ten specimens each: Group 1: DAP and Prime & Bond NT (PBNT); Group 2: DAP/PBNT with a 15 second dentin etch prior to bonding; Group 3: DAP placed with PLP adhesive; Group 4: CG and Compobond NE (CBNE); Group 5: CG/CBNE with a 15 second dentin etch; and Group 6: CG placed with PLP adhesive. The specimens were stored at 37°C with 100% humidity for 24 hours then mounted and sheared using an Instron Universal Testing Machine at a cross head speed of 0.5 mm/min. The results were recorded in Mega Pascals (MPa). The sheared specimens were examined under a light microscope, and the type of failure (adhesive, cohesive, or mixed) was recorded. Results The mean dentin shear bond strength value (MPa) for the groups was: Group 1 (11.6±3.9); Group 2 (13.2±3.3); Group 3 (12.4±2.0); Group 4 (13.0±4.3); Group 5 (19.3±3.7); and Group 6 (13.1±3.0). One way analysis of variance (ANOVA) and Tukey HSD post-hoc tests detected a significantly higher bond strength (P ≤ 0.003) for group 5. For groups 1, 3, 4, and 6, the mode of failure was mostly adhesive. When acid etching of dentin was performed (groups 2 and 5), cohesive fracture within dentin was the predominant mode of failure. Acid etching and the use of PLP significantly reduced the number of adhesive fractures and reduced variability in the shear bond strength results. Conclusions Acid etching significantly increased the shear bond strength of CG to dentin but did not affect DAP. The application of PLP resulted in a shear bond strength not statistically different from PBNT or CPNE. CG bond to dentin is improved with acid etching using phosphoric acid. However, PLP provided no significant improvement in the shear bond strength of DAP and CG. Citation Al-Nahedh H, Ateyah N. Effect of Different Bonding Conditions on the Shear Bond Strength of Two Compomers to Bovine Dentin. J Contemp Dent Pract 2006 September;(7)4:009-016.

scholarly journals Comparison of Shear Bond Strength of Four Types of Orthodontic Brackets with Different Base Technologies

2017 ◽  
Vol 7 ◽  
pp. 273-278
Author(s):  
Gaurang H. Chaudhary ◽  
Gianina Salton Mattevi ◽  
Peter Thiuri Gakunga
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Group 4 ◽  
Significant Difference ◽  
Acid Etch ◽  
Group 3 ◽  
The Difference ◽  
Group 2 ◽  
Group 1

Objectives The aim of this study was to compare the shear bond strength (SBS) of brackets systems with four different base technologies. Materials and Methods Maxillary first premolars were randomly divided into four groups of thirty specimens each: (1) Master Series™ conventional twin, (2) T3™ self-ligating, (3) Victory series™ conventional twin, and (4) H4™ self-ligating brackets. Maxillary first premolars were bracketed using an acid-etch composite system, and the SBS measured using an Instron Universal Testing Machine at a crosshead speed of 2 mm/min. The ANOVA and Tukey’s multiple comparison tests were performed with significance predetermined at P ≤ 0.05. Results The overall mean bond strengths were 8.49 ± 2.93, 10.85 ± 3.34, 9.42 ± 2.97, and 9.73 ± 2.62 for the Groups 1, 2, 3, and 4 brackets, respectively. One-way ANOVA test gave an F = 3.182 with a P = 0.026. The Group 1 and Group 2 were observed to have statistically significant difference with a P = 0.014. Conclusions The T3 self-ligating one-piece design with microetched Quadra Grip™ base brackets had the highest bond strength. The SBS difference between Group 2, Group 3, and Group 4 was not significant, but the difference between Group 2 and Group 1 was statistically significant.

scholarly journals Influence of bleaching and desensitizing gel on bond strength of orthodontic brackets

2015 ◽  
Vol 20 (2) ◽  
pp. 49-54 ◽  
Author(s):  
Fernanda Alves Rodrigues Britto ◽  
Adriana Simoni Lucato ◽  
Heloisa Cristina Valdrighi ◽  
Sílvia Amélia Scudeler Vedovello
Keyword(s):  
Hydrogen Peroxide ◽  
Bond Strength ◽  
Group 4 ◽  
Adhesive Remnant Index ◽  
Significant Difference ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Bovine Enamel ◽  
Group 1

OBJECTIVE: The objective of this study was to assess, in vitro, the influence of bleaching gel and the use of desensitizing agent over bond strength of ceramic brackets bonded to bovine enamel. METHODS: One hundred bovine incisors were selected and randomly divided into five groups (n = 20): Group 1, control group (without bleaching); Group 2, bleached with 35% hydrogen peroxide; Group 3, bleached with 35% hydrogen peroxide (three applications, 15 minutes each) and desensitizing agent applied for 10 minutes; Group 4, bleached with 35% hydrogen peroxide for 40 minutes; Group 5, bleached with 35% hydrogen peroxide for 40 minutes with desensitizing agent applied for 10 minutes. Brackets were bonded 7 days after bleaching and submitted to shear bond strength test after 24 hours at a compression rate of 1 mm/minute. After fracture, the adhesive remnant index (ARI) was assessed under stereoscopic at 40 x magnification. Shear strength data (MPa) were submitted to one-way ANOVA and Tukey's test with significance level set at 5%. RESULTS: Group 5 (29.33 MPa) showed significantly higher bond strength than Group 1 (19.19 MPa), Group 2 (20.59 MPa) and Group 4 (23.25 MPa), but with no difference in comparison to Group 3. There was no significant difference among the other groups. The adhesive remnant index showed predominance of score 3, that is, all resin remained adhered to enamel for all groups. CONCLUSION: Bleaching with 35% hydrogen peroxide with calcium associated with desensitizing agent application produced higher bond strength values of brackets bonded to bovine enamel.

Clinical Evaluation of Nd:YAG Laser With and Without Dentin Bonding Agent for the Treatment of Occlusal Hypersensitivity

2019 ◽  
Vol 44 (3) ◽  
pp. 227-234
Author(s):  
L Guo ◽  
PK Kayastha ◽  
L Chen ◽  
M Shakya ◽  
X Chen
Keyword(s):  
Nd:Yag Laser ◽  
Surface Group ◽  
Term Treatment ◽  
Bonding Agent ◽  
Dentin Bonding ◽  
Long Term Treatment ◽  
Sensitive Teeth ◽  
Dentin Bonding Agent ◽  
Group 3 ◽  
Group 2

SUMMARY Purpose: The aim of the present study was to evaluate and compare both the immediate and delayed desensitizing effects of the Nd:YAG (neodymium-doped:yttrium aluminum garnet; Nd3+:Y3Al5O12) laser with and without dentin bonding agent (DBA) on occlusal dentinal hypersensitivity (DH). Methods and Materials: Twenty-one patients with a total of 117 chronic occlusal hypersensitive teeth were selected. Each subject had at least three hypersensitive teeth. These teeth were randomly allocated into three groups: group 1, DBA on the occlusal surface; group 2, Nd:YAG laser (1064-nm wavelength, 30 mJ of energy, 10 pulse/s, 60 seconds, two times); and group 3, Nd:YAG laser (1064-nm wavelength, 30 mJ of energy, 10 pulse/s, 60 seconds, two times) with DBA. Pain was assessed using a visual analog scale after stimulation of the sensitive teeth by using the sharp tip of an explorer and an air blast prior to treatment and immediately, one week, one month, and three months after treatment by one blinded examiner. Results: A significant reduction in occlusal DH occurred at all time points in all of the experimental groups. The three groups showed significant improvements in discomfort immediately after treatment and after one week (p&lt;0.001), but the Nd:YAG laser with DBA group had greater efficacy when compared with the other groups. The Nd:YAG laser group and Nd:YAG laser with DBA group had no significant differences at one month and three months after treatment (p&gt;0.05); however, their desensitizing efficacy was superior to the DBA group. Conclusions: The Nd:YAG laser with DBA may be most effective in the long-term treatment of occlusal DH, although other measures also reduce DH.

scholarly journals Resin Bonding to Root Canal Dentin: Effect of the Application of an Experimental Hydrophobic Resin Coating after an All-in-one Adhesive

2008 ◽  
Vol 9 (4) ◽  
pp. 34-42 ◽  
Author(s):  
Marco Antonio Bottino ◽  
Geraido H. L. Lombardo ◽  
Rodrigo O. A. Souza ◽  
Silvia M. A Michida ◽  
Renata Marques de Melo ◽  
...  
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
Adhesive Systems ◽  
Low Viscosity ◽  
Group 4 ◽  
Resin Coating ◽  
Group 3 ◽  
Group 2 ◽  
Root Canal Dentin ◽  
Group 1

Abstract Aim Based on the hypothesis the application of a low-viscosity hydrophobic resin coating improves the bond of all-in-one adhesive, the purpose of the study was to evaluate the bond strength of four adhesive systems to bovine root dentin using the push-out test method. Methods and Materials The root canals of 32 bovine roots (16 mm) were prepared to a length of 12 mm using a FRC Postec Plus preparation drill. The specimens were allocated into four groups according to the adhesive system used: (Group 1) All-in-one Xeno III; (Group 2) All-in-one Xeno III+ScotchBond Multi-Purpose Plus Adhesive; (Group 3) Simplified Etch & Rinse One Step Plus; and (Group 4) Multi-Bottle Etch & Rinse All- Bond 2. A fiber-reinforced composite retention post was reproduced using an additional silicon impression and fabricated with DuoLink resin cement. The root specimens were treated with the selected adhesive systems, and the resin posts were luted in the canals with DuoLink resin cement. Each root specimen was cross sectioned into four samples (±1.8 mm in thickness), and the post sections were pushed-out to determine the bond strength to dentin. Results Group 2 (2.9±1.2) was statistically higher than Group 1 (1.1±0.5) and Group 3 (1.1±0.5). Groups 1 and 3 showed no statistically significant difference while Group 4 (2.0±0.7) presented similar values (p>0.05) to Groups 1, 2, and 3 [(one-way analysis of variance (ANOVA)] and Tukey test, α=0.05). Conclusion The hypothesis was accepted since the application of the additional layer of a low-viscosity bonding resin improved the bond of the all-in-one adhesive. Further studies must be conducted to evaluate the long-term bond. Citation Lombardo GHL, Souza ROA, Michida SMA, de Melo RM, Bottino MA, Valandro LF. Resin Bonding to Root Canal Dentin: Effect of the Application of an Experimental Hydrophobic Resin Coating after an All-in-one Adhesive. J Contemp Dent Pract 2008 May; (9)4:034-042.

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