scholarly journals Evaluation of shear bond strength and adhesive remnant index of ceramic brackets using one-step self-adhesive composite resin

2013 ◽  
Vol 44 (12) ◽  
pp. 71-86
Author(s):  
Essam Abdallah ◽  
Nadia El Harouni ◽  
Amal Fahmy ◽  
Aly Osman
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Adhesive Remnant Index ◽  
Ceramic Brackets ◽  
One Step

scholarly journals Light Activation and Thermocycling Methods on the Shear Bond Strength of Brackets Bonded to Porcelain Surfaces

2020 ◽  
Vol 31 (1) ◽  
pp. 52-56
Author(s):  
Gustavo Vallandro Lopes ◽  
Lourenço Correr-Sobrinho ◽  
Américo Bortolazzo Correr ◽  
Ana Paula Terossi de Godoi ◽  
Silvia Amélia Scudeler Vedovello ◽  
...  
Keyword(s):  
Bond Strength ◽  
Analysis Of Variance ◽  
Hydrofluoric Acid ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Deionized Water ◽  
Light Activation ◽  
Thermal Cycles ◽  
Adhesive Remnant Index ◽  
Significant Difference

Abstract The present study was evaluated the effect of different light activation and thermocycling methods on the shear bond strength (SBS) and on the adhesive remnant index (ARI) of metal brackets bonded to feldspathic ceramic. Hundred metal brackets were bonded to 20 porcelain cylinders, divided into four groups (n=25) based on light activation and thermocycling processes. The cylinders were etched with 10% hydrofluoric acid for 60 s and coated with two layers of silane. The brackets were bonded with Transbond XT composite resin. Light activation in Groups 1 and 3 was performed during 3 s using the VALO Ortho Cordless appliance with irradiance 3,200 mW/cm2 and in Groups 2 and 4 for 40 s using Optilight Max appliance with irradiance 1,200 mW/cm². The samples were stored in deionized water at 37°C for 24 h and the samples from Groups 1 and 2 were submitted to the SBS test at a rate of 1 mm/min, whereas the samples from Groups 3 and 4 were submitted to 7,000 thermal cycles (5°/55°C) before to the SBS test. The data were assessed by two-way analysis of variance and by Tukey’s test (a=0.05). No significant difference was observed between SBS means in the different light activation devices used. The samples subjected to thermocycling revealed lower SBS values (p≤0.05). There was predominance of score 0 for ARI in all groups. Therefore, the different light activation methods did not interfere in SBS, but thermocycling reduced SBS.

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 Orthodontic bonding to silicate ceramics: impact of different pretreatment methods on shear bond strength between ceramic restorations and ceramic brackets

2021 ◽  
Author(s):  
Rebecca Jungbauer ◽  
Christian Kirschneck ◽  
Christian M. Hammer ◽  
Peter Proff ◽  
Daniel Edelhoff ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Comparison Group ◽  
Distilled Water ◽  
Bonferroni Correction ◽  
Adhesive Remnant Index ◽  
Ceramic Brackets ◽  
Post Hoc ◽  
Ceramic Restorations ◽  
Silicate Ceramic

Abstract Objective The study aims to investigate the shear bond strength (SBS) between silicate ceramic restorations and ceramic brackets after different pretreatments and aging methods. Material and methods Leucite (LEU) and lithium disilicate (LiSi) specimens were pretreated with (i) 4% hydrofluoric acid + silane (HF), (ii) Monobond Etch&Prime (MEP), (iii) silicatization + silane (CoJet), and (iv) SiC grinder + silane (SiC). Molars etched (phosphoric acid) and conditioned acted as comparison group. SBS was measured after 24 h (distilled water, 37 °C), 500 × thermocycling (5/55 °C), and 90 days (distilled water, 37 °C). Data was analyzed using Shapiro–Wilk, Kruskal–Wallis with Dunn’s post hoc test and Bonferroni correction, Mann–Whitney U, and Chi2 test (p < 0.05). The adhesive remnant index (ARI) was determined. Results LEU pretreated with MEP showed lower SBS than pretreated with HF, CoJet, or SiC. LiSi pretreated with MEP resulted in lower initial SBS than pretreated with HF or SiC. After thermocycling, pretreatment using MEP led to lower SBS than with CoJet. Within LiSi group, after 90 days, the pretreatment using SiC resulted in lowest SBS values. After HF and MEP pretreatment, LEU showed lower initial SBS than LiSi. After 90 days of water storage, within specimens pretreated using CoJet or SiC showed LEU higher SBS than LiSi. Enamel presented higher or comparable SBS values to LEU and LiSi. With exception of MEP pretreatment, ARI 3 was predominantly observed, regardless the substrate, pretreatment, and aging level. Conclusions MEP pretreatment presented the lowest SBS values, regardless the silicate ceramic and aging level. Further research is necessary. Clinical relevance There is no need for intraoral application of HF for orthodontic treatment.

scholarly journals Shear bond strength of metallic and ceramic brackets using color change adhesives

2013 ◽  
Vol 18 (2) ◽  
pp. 76-80 ◽  
Author(s):  
Aisha de Souza Gomes Stumpf ◽  
Carlos Bergmann ◽  
José Renato Prietsch ◽  
Juliane Vicenzi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Color Change ◽  
Testing Machine ◽  
Adhesive System ◽  
Bonding Material ◽  
Universal Testing ◽  
Adhesive Remnant Index ◽  
Ceramic Brackets ◽  
The Mean

OBJECTIVE: To determine the shear bond strength of orthodontic brackets using color change adhesives that are supposed to aid in removing excess of bonding material and compare them to a traditional adhesive. METHODS: Ninety metallic and ninety ceramic brackets were bonded to bovine incisors using two color change adhesives and a regular one. A tensile stress was applied by a universal testing machine. The teeth were observed in a microscope after debonding in order to determine the Adhesive Remnant Index (ARI). RESULTS: The statistical analysis (ANOVA, Tukey, and Kruskall-Wallis tests) demonstrated that the mean bond strength presented no difference when metallic and ceramic brackets were compared but the bond resistance values were significantly different for the three adhesives used. The most common ARI outcome was the entire adhesive remaining on the enamel. CONCLUSIONS: The bond strength was similar for metallic and ceramic brackets when the same adhesive system was used. ARI scores demonstrated that bonding with these adhesives is safe even when ceramic brackets were used. On the other hand, bond strength was too low for orthodontic purposes when Ortho Lite Cure was used.

scholarly journals CO2 laser irradiation for debonding ceramic orthodontic brackets

2021 ◽  
Vol 32 (2) ◽  
pp. 45-52
Author(s):  
Denise Souza Matos ◽  
Erika Calvano Küchler ◽  
Maria Cristina Borsatto ◽  
Mirian Aiko Nakane Matsumoto ◽  
Fernanda Vicioni Marques ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Co2 Laser ◽  
Null Hypothesis ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Composite Resins ◽  
Control Groups ◽  
Adhesive Remnant Index ◽  
Ceramic Brackets ◽  
Ceramic Bracket

Abstract This study evaluated shear bond strength (SBS), adhesive remnant index (ARI) and fracture mode of chemically and mechanically retained ceramic brackets bonded with different composite resins and irradiated with CO2 laser. The null hypothesis was that ceramic brackets bonded with different composite resins and irradiated with CO2 laser would have similar SBS values. Ninety human premolars were divided into four experimental groups according to the combination of type of composite resin (Transbond XT and Z 250) and type of ceramic bracket (Fascination and Mystique), and two control groups (n=15). In the four experimental groups, the brackets were irradiated with CO2 laser at 10 W for 3 seconds before SBS testing. Enamel surface ARI was calculated after debonding under electron microscopy scanning. ANOVA and the Mann-Whitney test were used for statistical analysis. The laser groups had lower SBS values than the non-irradiated groups (control) (p<0.05). The mechanically retained brackets (Mystique) had the higher (p<0.05) and Z250 had the lower SBS values after CO2 laser irradiation. The groups bonded with Z250 had the highest ARI. Adhesive fractures were the most prevalent. The null hypothesis was rejected. CO2 laser decreased SBS efficiently and facilitated debonding of mechanically and chemically retained ceramic brackets.

scholarly journals Bonding Effectiveness of Universal Adhesive to Intracoronal Bleached Dentin Treated with Sodium Ascorbate

2016 ◽  
Vol 27 (3) ◽  
pp. 303-308 ◽  
Author(s):  
Thaís Fantinato Trindade ◽  
Luana Kelle Batista Moura ◽  
Walter Raucci Neto ◽  
Danielle Cristine Furtado Messias ◽  
Vivian Colucci
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Sodium Ascorbate ◽  
Control Groups ◽  
Universal Adhesive ◽  
Bleaching Procedure ◽  
Etch And Rinse ◽  
One Step ◽  
Self Etch

Abstract This study evaluated the effect of restorative protocol with sodium ascorbate on the shear bond strength (SBS) of a universal adhesive to intracoronal bleached dentin. One hundred-and-twenty bovine dentin fragments were randomly divided into 12 groups (n=10), according to the bleaching procedure (unbleached and bleached) and restorative protocol (no treatment, 10% sodium ascorbate -10SA, 35% sodium ascorbate -35SA and two-step etch-and-rinse -ER or one-step self-etch -SE Scotchbond universal adhesive approaches). Four whitening sessions were performed using 35% hydrogen peroxide. The samples from control groups were kept in relative humidity at 37 °C. Immediately after bleaching procedures, the assigned antioxidant solution was applied on dentin and restorative procedures were performed following either the ER or the SE approach. After 24 h, the specimens were subjected to SBS test. Data (MPa) were analyzed by ANOVA and Tukey's test (?=0.05). Lower SBS values were found for bleached specimens (8.54 MPa) compared with those unbleached (12.13 MPa) (p<0.05). The bond strength of the sodium ascorbate-treated groups was higher than those untreated, regardless of the strategy employed (p<0.05). Groups restored without sodium ascorbate showed lower bond strength values for both ER (8.32 MPa) and SE (8.28 MPa) adhesive strategies. The group treated with 10SA submitted to ER approach (10.14 MPa) was similar to untreated groups (p>0.05). It may be concluded that bond strength of composite resin to intracoronal dentin was affected by restorative protocol and reduced by bleaching.

scholarly journals Effect of Decontamination Treatments on Micro-Shear Bond Strength between Blood–Saliva-Contaminated Post-Etched Dentin Substrate and Composite Resin

Healthcare ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 128
Author(s):  
Satheesh B. Haralur ◽  
Salem Mohammed Alharthi ◽  
Saeed Aied Abohasel ◽  
Khalid Mohammed alqahtani
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
One Step ◽  
The One ◽  
Cleaning Methods ◽  
Saliva Contamination ◽  
Post Hoc ◽  
Self Etch

Blood–saliva contamination negatively affects the bonding potential of adhesive agents. The study aimed to assess the effect of various cleaning protocols on micro-shear bond strength (μSBS) between blood–saliva-contaminated post-etched dentin and composite resin in total-etch and self-etch adhesives. The cleaning methods tested were water rinsing, 37.5% phosphoric acid (H3PO4) re-etching, 6% sodium hypochlorite (NaoCl), 2% chlorhexidine gluconate (CXG), isopropyl alcohol (IPA), and pumice. Nono-hybrid composite cylinders with a 3-mm diameter and 2-mm height were directly cured over the dentin substrate, stored for 24 h, and subjected to 12,000 thermocycles. The shear force was exerted with a 200-μm knife-edged chisel-shaped head from a universal testing machine. The type of failure was assessed with stereomicroscope magnified images. The obtained data were evaluated by Kruskal–Wallis and Mann–Whitney U post-hoc tests. Water-rinsed contaminated dentin surfaces showed substantially reduced μSBS in the total etch from 25.93 to 20.29 Mpa and the corresponding values for the one-step self-etch adhesive were 10.10 to 8.8. Re-etching with 37.5% H3Po4 resulted in a recovery of bonding potential in both total-etch (24.58 Mpa) and self-etch adhesive (9.23 Mpa). Alternately, NaoCl and pumice cleaning showed promising results for the total-etch (23.51 Mpa) and self-etch (7.79 Mpa).

scholarly journals Shear Bond Strengths and Microleakage of Four Types of Dentin Adhesive Materials

2004 ◽  
Vol 5 (1) ◽  
pp. 63-73 ◽  
Author(s):  
Nasrien Z. Ateyah ◽  
Ahmed A. Elhejazi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Distilled Water ◽  
Bonding System ◽  
One Step ◽  
Diamond Saw ◽  
Bond Strengths ◽  
Adhesive Materials ◽  
Dentin Adhesive

Abstract The aim of this investigation was to compare the microleakage of composite resin (Z-100) and shear bond strength to bovine dentin using different types of adhesive systems (Scotch Bond Multi-Purpose, All-Bond 2, One-Step, and Perma Quick) to compare and correlate microleakage to shear bond strength. For the microleakage aspect of the study, 20 class V were prepared (bovine incisors) with 90-degree cavosurface margins and were located at the cemento-enamel junction using a template. Each dentin bonding system was applied to five cavities following the manufacturer's instructions and restored with Z-100 composite resin. After 24 hours of storage in distilled water at 37°C, the teeth were immersed in 2% basic fuchsin dye. All teeth were sectioned in a mesiodistal direction using a diamond saw, and each section was then inspected under a stereomacroscope. For the shear bond strength aspect of the study, 20 bovine incisors were centrally horizontally mounted in Teflon mold with cold cure acrylic resin. Flat labial dentin surfaces were prepared using different grit silicon carbide abrasive wheels. Five specimens were used for each of the bonding agent systems. Each specimen was bonded with restorative composite resin (Z-100) and applied to the treated dentinal surface through a split Teflon mold. All specimens were stored in distilled water at 37°C for 24 hours. The bonds were stressed using shear forces at a crosshead speed of 0.5mm/min using an Instron Universal testing machine. Findings indicate none of the systems tested in this study were free from microleakage. Scotch bond multipurpose achieved the best seal, with One-Step being second best, while All-Bond 2 and Perma Quick had the poorest seal. However, there were significant differences among the shear bond strengths of the four bonding systems tested. Scotch Bond Multi-Purpose has a higher bond strength to composite resin when compared to the other dentin adhesives. The study also concluded there is no association between microleakage and shear bond strength. Citation Ateyah AZ, Elhejazi AA. Shear Bond Strengths and Microleakage of Four Types of Dentin Adhesive Materials. J Contemp Dent Pract 2004 February;(5)1:063-073.

scholarly journals Influence of adhesive and thermal cycling on the bond strength of ceramic brackets to dental ceramic

2017 ◽  
Vol 15 (2) ◽  
pp. 176
Author(s):  
Patricia de Fátima Fraga ◽  
Ana Paula Terossi de Godoi ◽  
Ana Rosa Costa ◽  
Lourenço Correr-Sobrinho ◽  
Mario Vedovello Filho ◽  
...  
Keyword(s):  
Bond Strength ◽  
Thermal Cycling ◽  
Hydrofluoric Acid ◽  
Shear Bond Strength ◽  
In Vitro Study ◽  
Single Bond ◽  
Adhesive Remnant Index ◽  
Ceramic Brackets ◽  
Post Hoc

Aim: This in vitro study investigated the effect of the application of an adhesive, silane and thermal cycling (TC) on the shear bond strength (SBS) of ceramic brackets to feldspathic ceramic. Methods: 16 cylinders of feldspathic ceramic were etched with hydrofluoric acid and divided into four groups (n=4): G1 - silane, without TC; G2 – silane, with TC; G3 - adhesive, without TC; G4 - adhesive, with TC. One layer of silane was applied on the surface of cylinders in G1 and G2 e one layer of photo-activated adhesive Single Bond Universal was used in G3 and G4. Ceramic brackets were bonded using Transbond XT. The SBS data were subjected to two-way ANOVA and Tukey’s post hoc test (α=0.05). The Adhesive Remnant Index (ARI) was evaluated at 40× magnification. Results: Silane was more effective than adhesive on the SBS of the brackets to ceramic (p<0.05). TC decreased significantly the SBS values compared with the groups without TC (p<0.05). The ARI results showed predominance of score 0. Conclusions: Groups with silane showed higher SBS than groups with adhesive. TC influence significantly on the bond strength. Regarding ARI, score 0 predominated in all groups.

scholarly journals Evaluation of Effect of Different Cavity Disinfectants on Shear Bond Strength of Composite Resin to Dentin using Two-Step Self-Etch and One-Step Self-Etch Bonding Systems: A Comparative in vitro Study

2013 ◽  
Vol 14 (2) ◽  
pp. 275-280 ◽  
Author(s):  
Shreetha Bhandary ◽  
M Surya Chaitanya Reddy ◽  
MC Mahesh ◽  
J Pramod ◽  
Ashwija Shetty
Keyword(s):  
Hydrogen Peroxide ◽  
Bond Strength ◽  
Sodium Hypochlorite ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Posterior Teeth ◽  
One Step ◽  
Bonding Systems ◽  
Self Etch

ABSTRACT Aim and objectives To evaluate the effect of 2% chlorhexidine, 2% sodium hypochlorite, 3% hydrogen peroxide on shear bond strength of composite resin to dentin using two-step and onestep self-etch bonding systems and to study the mode of failure of specimens under stereomicroscope. Materials and methods Eighty extracted sound human posterior teeth were used. The occlusal surfaces were ground to expose the dentin and were then randomly divided into 4 main groups. In group I, no cavity disinfectant was used and served as control. In groups II, III, IV, 2% chlorhexidine, 2% sodium hypochlorite and 3% hydrogen peroxide were used as cavity disinfectants respectively. Each group was then divided into two subgroups of 10 teeth each according to the bonding agent used, two-step self-etch (Adper SE Plus) and one-step self-etch (Adper Easy One) respectively. A transparent cylindrical plastic tube was loaded with microhybrid composite and placed over the dentin and light cured for 40 seconds. The specimens were subjected to shear stress in the universal testing machine. Results Pretreatment with 2% chlorhexidine, 2% sodium hypochlorite and 3% hydrogen peroxide, had a negative effect on the shear bond strength of self-etching bonding systems. Conclusion The highest bond strength was found in 2% chlorhexidine group followed by 2% sodium hypochlorite group and the lowest bond strength was found in 3% hydrogen peroxide group. Clinical significance All three cavity disinfectants used in this study reduced the shear bond strength and hence should be used with caution. How to cite this article Reddy MSC, Mahesh MC, Bhandary S, Pramod J, Shetty A. Evaluation of Effect of Different Cavity Disinfectants on Shear Bond Strength of Composite Resin to Dentin using Two-Step Self-Etch and One-Step Self-Etch Bonding Systems: A Comparative in vitro Study. J Contemp Dent Pract 2013;14(2):275-280.

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