Bond strength of composite resin containing biomaterial S-PRG to eroded dentin

Aim: To evaluate the bond strength of composite resin containing or not biomaterial (S-PRG) to sound/eroded dentine. Methods: Occlusal dentin of 30 human molars (n=15) had half of its surface kept uneroded, while on the other half an erosive lesion was produced by cycling in citric acid (pH 2.3) and supersaturated solution (pH 7.0). On both eroded (ED) and non-eroded (SD) substrates, two restorative systems (containing or not S-PRG) were tested. Composite resin cylinders were built and, after storage in water (24h), were submitted to bond strength test. The analysis of the fracture pattern was performed under an optical microscope (40x). The obtained values of bond strength (MPa) were submitted to ANOVA (two factors) and Tukey multiple comparisons tests (p<0.05). Results: According to the results, there was difference between substrates (<0.001) and restorative materials (p=0.002) evaluated. For the microtensile bond strength, the values obtained were: SDNB (47.6±12.2 MPa), SDWB (34.1±15.8 MPa), EDNB (31.1±8.3 MPa) and EDWB (15.5±13.6 MPa), revealing a statistically significant difference in the evaluated substrates and restorative materials. Conclusion: Bond strength of eroded substrate is inferior to the sound substrate and the restorative system containing S-PRG biomaterial influences negatively the results of bonding to sound/eroded dentin.

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Microtensile Bond Strength of Methacrylate and Silorane Resins to Enamel and Dentin

Brazilian Dental Journal ◽

10.1590/0103-6440201300009 ◽

2014 ◽

Vol 25 (4) ◽

pp. 327-331 ◽

Cited By ~ 5

Author(s):

Gisele Rodrigues da Silva ◽

Isabela Sousa Araújo ◽

Rodrigo Dantas Pereira ◽

Bruno de Castro Ferreira Barreto ◽

Célio Jesus do Prado ◽

...

Keyword(s):

Bond Strength ◽

Aging Time ◽

Storage Time ◽

Composite Resin ◽

Glass Plate ◽

Composite Resins ◽

Microtensile Bond Strength ◽

Bonding Interaction ◽

Significant Difference ◽

And Storage

The aim of this study was to evaluate the microtensile bond strength (µTBS) of two substrates (enamel and dentin) considering two study factors: type of composite resin [methacrylate-based (Filtek Supreme) or silorane-based (Filtek LS)] and aging time (24 h or 3 months). Twenty human molars were selected and divided into 2 groups (n=10) considering two dental substrates, enamel or dentin. The enamel and dentin of each tooth was divided into two halves separated by a glass plate. Each tooth was restored using both tested composite resins following the manufacturer's instructions. The samples were sectioned, producing 4 sticks for each composite resin. Half of them were tested after 24 h and half after 3 months. µTBS testing was carried out at 0.05 mm/s. Data were analyzed by three-way ANOVA and Tukey's HSD tests at α=0.05. Significant differences between composite resins and substrates were found (p<0.05), but no statistically significant difference was found for aging time and interactions among study factors. The methacrylate-based resin showed higher µTBS than the silorane-based resin. The µTBS for enamel was significantly higher than for dentin, irrespective of the composite resin and storage time. Three months of storage was not sufficient time to cause degradation of the bonding interaction of either of the composite resins to enamel and dentin.

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Impact of Intracoronal Dentin Treatment Prior to Bleaching on Bond Strength of Restorative Materials

Brazilian Dental Journal ◽

10.1590/0103-6440201302441 ◽

2014 ◽

Vol 25 (6) ◽

pp. 519-523 ◽

Cited By ~ 2

Author(s):

Erica Moreno Zanconato-Carvalho ◽

João Felipe Bruniera ◽

Natália Spadini de Faria ◽

Vivian Colucci ◽

Danielle Cristine Messias

Keyword(s):

Phosphoric Acid ◽

Bond Strength ◽

Surface Treatment ◽

Shear Bond Strength ◽

Composite Resin ◽

Er:Yag Laser ◽

Composite Resins ◽

Bleaching Procedure ◽

Significant Difference ◽

Restorative Materials

Surface treatment of dentin before the bleaching procedure may affect its permeability and influence the bond strength of restorative materials. This study evaluated the influence of surface treatment before the bleaching on shear bond strength (SBT) of restorative materials to intracoronal dentin. Dentin slabs were subjected to surface treatment: no bleaching (control - CON), no surface treatment + bleaching (HP), 37% phosphoric acid + bleaching (PA) and Er:YAG laser + bleaching (L). After the bleaching procedure, specimens (n=10) were restored with: microhybrid composite resin (MH), flowable composite resin (F), and resin-modified glass-ionomer cement (RMGIC). The shear test was carried out. ANOVA and Tukey's test (α=0.05) showed significant difference for surface treatment and restorative materials (p<0.05). CON presented higher STB and was statistically different from HP (p<0.05). PA and L showed intermediate values and were statistically similar to CON and HP (p>0.05). STB for MH and F were higher than RMGIC (p<0.05), and did not differ from each other (p>0.05). The surface treatments with phosphoric acid and Er:YAG laser before the bleaching procedure provided shear bond strength at the same level of unbleached dentin and the composite resins presented superior bond strength to the intracoronal dentin.

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Low- and high-viscosity bulk-fill resin composites: a comparison of microhardness, microtensile bond strength, and fracture strength in restored molars

Acta Odontológica Latinoamericana ◽

10.54589/aol.34/2/173 ◽

2021 ◽

Vol 34 (2) ◽

pp. 173-182

Author(s):

Fabiana França ◽

Jonathan Tenuti ◽

Isabela Broglio ◽

Lara Paiva ◽

Roberta Basting ◽

...

Keyword(s):

Bond Strength ◽

Fracture Strength ◽

High Viscosity ◽

Fracture Pattern ◽

Resin Composites ◽

Microtensile Bond Strength ◽

Thermomechanical Cycling ◽

Low Viscosity ◽

Significant Difference ◽

Knoop Microhardness

The aim of this study was to compare low- and high-viscosity bulk-fill composites for Knoop microhardness (KHN), microtensile bond strength (MTBS) to dentin in occlusal cavities, and fracture strength (FS) in molars with mesialocclusal-distal restoration. Disk-shaped samples with different thicknesses (2 or 4 mm) of low-viscosity (SDR Flow, Dentsply) and high-viscosity bulk-fill composites (Filtek BulkFill, 3M ESPE; and Tetric-N Ceram Bulk Fill, Ivoclar Vivadent) were prepared for top and bottom KHN analysis (n=10). MTBS to dentin and fracture pattern was evaluated in human molars with occlusal cavities restored with (n=10): conventional nanocomposite (Z350XT, 3M ESPE), low-viscosity (Filtek Bulk-fill Flow, 3M ESPE) or high-viscosity bulk-fill composites (Filtek BulkFill). The FS and fracture pattern of human molar with mesial-occlusal-distal restorations submitted or not to thermomechanical cycling were investigated (n=10) using: intact tooth (control), and restoration based on conventional microhybrid composite (Z250, 3M ESPE), low-viscosity (SDR Flow) or high-viscosity bulk-fill composites (Filtek BulkFill). The data were submitted to split-plot ANOVA (KHN), one-way ANOVA (MTBS), two-way ANOVA (FS) followed by Tukey’s test (α=0.05). For KHN, there was no significant difference for the resin composites between the top and bottom. For MTBS, no significant differences among the materials were detected; however, the low-viscosity composite presented lower frequency of adhesive failures. For FS, there was no significant difference between composites and intact tooth regardless of thermomechanical cycling. Low- and high-viscosity bulk-fill composites have comparable microhardness and microtensile bond strength when used in occlusal restorations. Likewise, the bulk-fill composites present similar fracture strength in molars with mesio-occlusal-distal restorations.

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Effect of Metalloproteinase Inhibitors on the Microtensile Bond Strength of Composite Resin to Er:YAG Laser-Irradiated Dentin

Brazilian Dental Journal ◽

10.1590/0103-6440201600825 ◽

2016 ◽

Vol 27 (4) ◽

pp. 442-445 ◽

Cited By ~ 2

Author(s):

Beatriz Carlos Correa ◽

Rodrigo Galo ◽

Camila Scatena ◽

Maria Cristina Borsatto ◽

Aloísio Oro Spazzin ◽

...

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Er:Yag Laser ◽

Testing Machine ◽

Adhesive System ◽

Fracture Pattern ◽

Chemical Degradation ◽

Control Group ◽

Microtensile Bond Strength ◽

Cross Sectional

Abstract This study evaluated the effect of matrix metalloproteinase (MMP) inhibitors - 2% (CHX) and sodium fluoride (NaF) (5000 ppm) - on microtensile bond strength (μTBS) of composite resin to Er:YAG laser-irradiated dentin after chemical degradation of the bond interface. The occlusal surface of forty sound human molars was removed exposing the dentin surface (n=10), which was polished, irradiated with Er:YAG laser, acid etched and dried. Twenty specimens were rewetted with 2% CHX (control group) and 20 were rewetted with NaF (5000 ppm). The adhesive system was applied and a 4-mm-high plateau of light-cured composite resin was built up. Resin-dentin sticks were obtained with a rectangular cross-sectional area (0.8-1 mm2) and were either stored in water at 37 ?#61616;C for 24 h or submitted to chemical degradation. For chemical degradation, they were immersed in 10% NaOCl aqueous solution for 5 h and rinsed in water for 1 h. The sticks were submitted to microtensile test in a mechanical testing machine at 0.5 mm/min until failure. Fracture pattern was analyzed using SEM. μTBS values were calculated in MPa and submitted to analysis of variance ANOVA (α=0.05). The variance analysis showed that the 'MMP inhibitor' and 'degradation' factors (p=0.214 and p=0.093, respectively) and interaction between the factors were not statistically significant (p=0.143). Mixed failure predominated in all groups. In conclusion, the 2% CHX and NaF 5000 ppm presented similar μTBS of composite resin to laser-irradiated dentin before and after chemical degradation

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In Vitro Evaluation of Onlay Restorations on Primary Teeth

The International Journal of Artificial Organs ◽

10.5301/ijao.5000630 ◽

2017 ◽

Vol 40 (12) ◽

pp. 709-713

Author(s):

Kadriye G.U. Güzel ◽

Ayşe C. Altun ◽

Zuhal Kirzioğlu

Keyword(s):

Bond Strength ◽

Primary Teeth ◽

Composite Resin ◽

Permanent Teeth ◽

Primary Tooth ◽

Microtensile Bond Strength ◽

Significant Difference ◽

Bond Strengths ◽

Materials Used

Purpose Many novel materials have been developed such as composite resin, ceramic, zircon or metal-supported ceramic for use in aesthetic restoration of primary teeth and permanent teeth with extensive crown damage. The aim of the present study was to compare microtensile bond strengths on materials using the microtensile bond strength test. Materials and methods The microtensile bond strength on the primary tooth dentin was measured on extracted primary teeth using an indirect method and fracture patterns were evaluated. Results The analysis of bond strengths using the Mann-Whitney U-test did not show significant difference between the rank averages of the compomer and composite resin (p = 0.741). The dentin sections, from which test samples were obtained, contributed to the bond strength; dentin samples obtained just above the pulp had lower bond strength, and the difference was statistically significant (p = 0.005). The adhesive type fracture was the most prevalent fracture type for both materials. Conclusions When the chemical, physiological, and micromorphological differences between primary and permanent teeth are taken into consideration, the success of the materials used for restorations can be different between primary and permanent teeth. Therefore, materials used in the dentistry must be evaluated separately for primary teeth.

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Microtensile Bond Strength of Polyacid-modified Composite Resin to Irradiated Primary Molars

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-2235 ◽

2018 ◽

Vol 19 (2) ◽

pp. 189-195

Author(s):

Yucel Yilmaz ◽

Sultan Keles ◽

Orhan Sezen

Keyword(s):

Bond Strength ◽

Primary Teeth ◽

Composite Resin ◽

Tooth Enamel ◽

Primary Tooth ◽

Primary Molars ◽

Control Group ◽

Microtensile Bond Strength ◽

Significant Difference ◽

Tooth Dentin

ABSTRACT Aim This study evaluated the influence of various doses of radiotherapy on the microtensile bond strength (μTBS) of compomer resin to dentin and enamel in primary molars. Materials and methods Thirty-five intact primary molars were collected and divided into seven groups. Teeth were irradiated with doses from 10 to 60 Gy, except for the control group. Compomer restorations were performed, and enamel—compomer resin beams and dentin—compomer resin beams were tested at a crosshead speed of 1 mm/min. Results No statistically significant difference was found between the irradiated tooth enamel and the control group (F = 1.1468; p = 0.194). However, statistically significant differences were evident among the dentin groups (F = 11.050; p < 0.001). Conclusion Radiation may not cause a significant difference in the μTBS of compomer resin to primary tooth enamel, but appears to dose dependently decrease its bond strength to primary tooth dentin. Clinical significance Radiotherapy may affect the success rate of compomer fillings in primary teeth, especially in deeper cavities with exposed dentin. How to cite this article Keles S, Yilmaz Y, Sezen O. Microtensile Bond Strength of Polyacid-modified Composite Resin to Irradiated Primary Molars. J Contemp Dent Pract 2018;19(2):189-195.

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Influence of increment thickness on microhardness and bond strength in composite resins

Research Society and Development ◽

10.33448/rsd-v10i9.17974 ◽

2021 ◽

Vol 10 (9) ◽

pp. e32810917974

Author(s):

Isis Almela Endo Hoshino ◽

Mariana de Oliveira Bachega ◽

Paulo Henrique dos Santos ◽

André Luiz Briso ◽

Rodolfo Bruniera Anchieta

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Composite Resins ◽

Third Molars ◽

Microtensile Bond Strength ◽

Significant Difference ◽

Post Test ◽

Knoop Microhardness ◽

Nanohybrid Composite ◽

New Generation

The aim of this study was to evaluate the Knoop microhardness and the microtensile bond strength of a second-generation of bulk-fill (BF) and a nanohybrid composite resins (NH) in different thicknesses of increments. For this, ninety disks of composite resin were made for Knoop microhardness, being divided into six groups (n = 15). The Knoop microhardness obtained in each millimeter of the internal face. For microtensile bond strength, ninety restored in third molars were used, divided into six groups (n = 15). For Knoop microhardness, the Wilcoxon and Friedman test was used. For the microtensile bond strength were used the Two-way Anova test and Tukey's post-test (p <0.05). The NH resin showed higher Knoop micro hardness than BF and it was observed that hardness value decreases as increases the thickness of the resin. There was no significant difference in microtensile bond strength comparing NH and BF. However, there was a significant difference between G2 and G4 for the NH groups, with the highest and lowest bond strength values, respectively. Thus, the new generation of the bulk-fill composite resin provided lower microhardness values as the thickness of the increments increases in comparison with the nanohybrid composite resin. The microtensile bond strength does not appear to have been influenced by the type of resin, or the thickness of the increment.

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Shear bond strength of six restorative materials

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.25.3.r8g48vn51l46421m ◽

2001 ◽

Vol 25 (3) ◽

pp. 221-225 ◽

Cited By ~ 29

Author(s):

Majed Almuammar ◽

Allen Schulman ◽

Fouad Salama

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Glass Ionomer ◽

Occlusal Surfaces ◽

Significant Difference ◽

Resin Modified Glass Ionomer ◽

Restorative Materials ◽

Bond Strengths ◽

The Mean

The purpose of this study was to determine and compare the shear bond strength of a conventional glassionomer cement, a resin modified glass-ionomer, a composite resin and three compomer restorative materials. Dentin of the occlusal surfaces from sixty extracted human permanent molars were prepared for shear bond strength testing. The specimens were randomly divided into six groups of 10 each. Dentinal surfaces were treated according to the instructions of manufacturers for each material. Each restorative material was placed inside nylon cylinders 2 mm high with an internal diameter of 3 mm, which were placed perpendicular to dentin surfaces. Shear bond strengths were determined using an Universal Testing Machine at crosshead speed of 0.5 mm/min in a compression mode. Conventional glass-ionomer, Ketac-Molar aplicap showed the lowest mean shear bond strength 3.77 ± 1.76 (X ± SD MPa) and the composite resin, Heliomolar showed the highest mean shear bond strength 16.54 ± 1.65 while the mean bond strength of Fuji II LC was 9.55 ± 1.06. The shear bond strengths of compomer restorative materials were 12.83 ± 1.42, 10.64 ± 1.42 and 11.19 ± 1.19 for Compoglass, Hytac and Dyract respectively. ANOVA revealed statistically significant differences in the mean shear bond strengths of all groups (P<0.001). No statistically significant difference was found between the three compomer materials (P>0.5). Ketac-Molar and composite resin showed statistically significant difference (P<0.0005). The mode of fracture varied between materials. It is concluded that the compomer restorative materials show higher shear bond strength than conventional glass-ionomer and resin modified glass-ionomer, but less than composite resin. The fracture mode is not related to the shear bond strengths values.

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Effect of adhesive mode and chlorhexidine on microtensile strength of universal bonding agent to sound and caries-affected dentins

European Journal of Dentistry ◽

10.4103/ejd.ejd_239_18 ◽

2018 ◽

Vol 12 (04) ◽

pp. 553-558 ◽

Cited By ~ 1

Author(s):

Joyce Figueiredo Macedo de Lima ◽

Danielle Wajngarten ◽

Fariya Islam ◽

Johanna Clifford ◽

Ana Carolina Botta

Keyword(s):

Phosphoric Acid ◽

Bond Strength ◽

Composite Resin ◽

High Viscosity ◽

Bonding Agent ◽

Third Molars ◽

Microtensile Bond Strength ◽

Etch And Rinse ◽

Significant Difference ◽

Self Etch

ABSTRACT Objective: The main objective of this study is to assess the effect of the adhesive mode and chlorhexidine (CHX) on the microtensile strength of a universal bonding agent to sound and caries-affected dentins. Materials and Methods: Six intact third molars and six decayed third molars were sectioned to obtain two middle dentin specimens per tooth. Prime and Bond Elect Universal (Dentsply) was applied to specimens in two different modes: Etch-and-rinse (ER, phosphoric acid for 15s) and self-etch (SE, no phosphoric acid). 2% CHX (Cavity Cleanser, Bisco) was applied to both dentins for 30 s. Specimens were randomly assigned into eight groups (n = 3) according to the treatments applied to sound and caries-affected dentins: SE; ER; SE + CHX; and ER + CHX. All specimens were restored with TPH Spectra High Viscosity (Dentsply) composite resin and sectioned to obtain specimens of 0.8 ± 0.1 mm2. The microtensile bond strength test was conducted at 1 mm/min. The data were statistically analyzed by ANOVA and multiple comparisons' test (α = 0.05). Results: There was no significant difference between sound dentin and caries-affected dentin (P = 0.132). The highest bond strength was obtained with the application of the ER (31.81MPa). SE + CHX promoted the lowest bond strength with no statistical difference to ER + CHX (P > 0.05). Conclusions: ER mode for the universal bonding agent yielded the highest bond strength to sound and caries-affected dentins. CHX reduced the bond strength to both dentins regardless the application of phosphoric acid. Clinical Significance: The universal bonding agent increased the bond strength to sound and caries-affected dentins when applied by the ER mode.

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Adhesion to eroded dentin submitted to different surface treatments

Brazilian Dental Science ◽

10.14295/bds.2014.v17i4.1029 ◽

2014 ◽

Vol 17 (4) ◽

pp. 40

Author(s):

Thayanne Monteiro Ramos Oliveira ◽

Thaysa Monteiro Ramos ◽

Bruna Uglik Garbui ◽

Fernando Seishim Hanashiro ◽

Patricia Moreira De Freitas

Keyword(s):

Bond Strength ◽

Composite Resin ◽

Fracture Pattern ◽

Strength Test ◽

Mean Values ◽

Diamond Bur ◽

Significant Difference ◽

Microshear Bond Strength ◽

One Way Anova

Objective: This in vitro study measured the microshear bond strength (µSBS) of a composite resin to sound and artificially eroded dentin, submitted to surface treatment with diamond bur (DB) or Er,Cr:YSGG laser (L). Material and Methods: Bovine dentin samples were randomly divided into six groups (n=11): G1-sound dentin, G2-eroded dentin, G3-eroded dentin treated with Er,Cr:YSGG laser at 1.5W, G4-eroded dentin treated with Er,Cr:YSGG laser at 2.0W, G5-eroded dentin treated with Er,Cr:YSGG laser at 2.5W and G6-eroded dentin treated with diamond bur. Erosive cycling was performed by immersion in 0.05M citric acid (pH2.3;10min; 6x/day) and in remineralizing solution (pH7.0, 1h, between acid attacks), for 5 days. Three composite resin cylinders were bonded to the samples and after 24h storage in distilled/deionized water (37oC), samples were submitted to microshear bond strength test and mean values (MPa) were analyzed by one-way ANOVA and Tukey tests (α=0.05). Results: G1 (19.9±7.6) presented the highest µSBS mean followed by G6 (12.2±3.8), which showed no statistically significant difference compared with the other groups, except from G4. The lowest µSBS value was found for G4 (7.1±1.5), which did not differ statistically from G2 (7.5±1.8), G3 (8.4±1.8) and G5 (8.6±3.2). Analysis of the fracture pattern revealed a higher incidence of adhesive fractures for all experimental groups. Conclusion: The results indicate that Er,Cr:YSGG laser at the parameters used in this in vitro study did not enhance composite resin bonding to eroded dentin.

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