The effect of tooth bleaching on the shear bond strength of orthodontic brackets using self-etching primer systems

ABSTRACTObjective: The purpose of this study was to determine the effect of 10% carbamide peroxide and 38% hydrogen peroxide bleaching agents on the shear bond strength of orthodontic brackets using self-etching primer systems.Methods: Forty five freshly extracted human premolar teeth were randomly divided into 3 groups of 15 teeth each: control (group 1), 10% carbamide peroxide at-home bleached (group 2), and 38% hydrogen peroxide in-office bleached (group 3). Three weeks later, all brackets were bonded using a self-etching primer system. The shear bond strength of these brackets was measured and recorded in MPa. Adhesive remnant index (ARI) scores were determined after the brackets failed. Data were analyzed using Kruskal- Wallis test, pairwise comparisons were made using the Mann-Whitney U test and ARI scores were analyzed using a chi-square test at a significance level of P<.05.Results: The shear bond strengths of group 1 (mean: 17.7 ± 9.7 MPa) were significantly higher (P<.05) than those of group 3 (mean: 9.9 ± 5.4 MPa). No significant differences were found between group 2 (mean: 12.3 ± 4.7) and either group 1 or group 3 (P>.05). ARI scores did not differ significantly among the 3 groups.Conclusions: The use of 10% carbamide peroxide bleaching does not significantly reduce shear bond strength values. In contrast, use of 38% hydrogen peroxide bleaching significantly reduces these values. (Eur J Dent 2013;7:55-60)

Download Full-text

Bond Strength of Metallic Brackets After Dental Bleaching

The Angle Orthodontist ◽

10.2319/072507-345.1 ◽

2009 ◽

Vol 79 (1) ◽

pp. 122-126 ◽

Cited By ~ 19

Author(s):

Virna Cavalcante Patusco ◽

Gil Montenegro ◽

Marcos Augusto Lenza ◽

Adilson Alves de Carvalho

Keyword(s):

Hydrogen Peroxide ◽

Bond Strength ◽

Shear Bond Strength ◽

Tooth Surface ◽

Carbamide Peroxide ◽

Peroxide Bleaching ◽

Group 3 ◽

Group 2 ◽

Group 1 ◽

At Home

Abstract Objective: To test the hypothesis that there is no difference between the action of at-home and in-office vital bleaching on the shear bond strength of metallic brackets bonded with composite resin 24 hours after bleaching. Materials and Methods: Forty-five human upper premolars were randomly divided into three groups: (1) control, (2) 10% carbamide peroxide at-home bleached, and (3) 35% hydrogen peroxide in-office bleached. Twenty-four hours after bleaching the teeth were pumiced, bonded with metallic brackets, and stored in distilled water. One day after bonding the shear bond strength of the brackets was determined. Results: The mean shear bond strength of Group 1 (control) and Group 2 (carbamide peroxide bleached) were not statistically different. Group 3 (hydrogen peroxide bleached) had a significantly lower mean shear bond strength than Group 1 and Group 2. Conclusions: The hypothesis is rejected. Use of 10% carbamide peroxide bleaching does not significantly alter shear bond strength values. On the other hand, use of 35% hydrogen peroxide bleaching significantly reduces these values and diminishes the amount of resin remnant on the tooth surface after bracket debonding.

Download Full-text

Influence of topical fluoride on shear bond strength of orthodontic brackets and enamel white spot lesions formation

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.03821 ◽

2021 ◽

Vol 50 ◽

Author(s):

Marcelle Dantas MONTENARO ◽

Heloísa Cristina VALDRIGHI ◽

Max José Pimenta LIMA ◽

Elisângela de Jesus CAMPOS ◽

Milton SANTAMARIA-JR

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Orthodontic Brackets ◽

White Spot ◽

White Spot Lesions ◽

Significant Difference ◽

Ph Cycling ◽

Group 3 ◽

Group 2 ◽

Group 1

Abstract Introduction Fluoride is considered a key element in the remineralization process of tooth enamel. Objective To evaluate the influence of a topical solution of sodium fluoride (NaF) on the shear bond strength of orthodontic brackets and white spot lesions formation. Material and method Sixty bovine teeth were divided into three groups (n=20). Group 1 (Control): shear bond strength; Group 2: shear bond strength after pH cycling; Group 3: shear bond strength after pH cycling and treatment with 0.04% NaF solution. Groups 2 and 3 underwent pH cycling with demineralizing (6hs) and remineralizing (17hs) solutions at pH of 4.3 and 7.0 respectively for 15 days. The specimens were submitted to the shear bond strength and the Adhesive Remnant Index was verified (ARI). The specimens of each group (n=3) were qualitatively analyzed by means of Scanning Electron Microscopy (SEM). Kruskal-Wallis test assessed the shear bond strength and Fisher's exact test evaluated ARI, with significance level of 5%. Result There was no significant difference among the three groups in shear bond strength (p=0.2679). Significant difference was found in ARI (p=0.0199). The frequency of ARI 1 was 55% in group 1, 90% in group 2, and 80% in group 3. SEM showed difference between the enamel and bonding. Group 2 showed structural change of the enamel surface, adjacent to the bond area; and group 3 showed enamel with characteristics similar to those of group 1. Conclusion It was concluded that there was no NaF influence on the bracket shear bond strength and even in low concentrations it prevented the development of areas of demineralization of white spot lesions.

Download Full-text

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

European Journal of Dentistry ◽

10.1055/s-0039-1697855 ◽

2010 ◽

Vol 04 (04) ◽

pp. 367-373 ◽

Cited By ~ 6

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)

Download Full-text

Shear Bond Strength Comparison between Two Orthodontic Adhesives and Self-Ligating and Conventional Brackets

The Angle Orthodontist ◽

10.2319/022406-79 ◽

2007 ◽

Vol 77 (4) ◽

pp. 701-706 ◽

Cited By ~ 23

Author(s):

Rodney G. Northrup ◽

David W. Berzins ◽

Thomas Gerard Bradley ◽

William Schuckit

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Orthodontic Adhesives ◽

Significant Difference ◽

Conventional Brackets ◽

Group 3 ◽

Group 2 ◽

Post Hoc ◽

Group 1

Abstract Objective: To evaluate and compare the shear bond strengths of two adhesives using two types of brackets: a conventional and a self-ligating bracket system. Materials and Methods: Sixty extracted human premolars were collected. The premolars were randomly divided into three groups of 20 teeth. All three groups were direct bonded. Groups 1 and 2 used light-cured adhesive and primer (Transbond XT) with a conventional (Orthos) and a self-ligating bracket (Damon 2), respectively. Group 3 used a light-cured primer (Orthosolo) and a light-cured adhesive (Blūgloo) with a self-ligating bracket (Damon 2). The specimens were stored in distilled water at 37°C for 40 ± 2 hours, after which they were debonded and inspected for Adhesive Remnant Index (ARI) scoring. Results: The mean shear bond strength was 15.2 MPa for group 1, 23.2 MPa for group 2, and 24.8 MPa for group 3. A one-way analysis of variance and post hoc Tukey test showed significant differences in bond strength (P < .001) between group 1 and groups 2 and 3 but no significant difference (P > .05) between groups 2 and 3. A Weibull analysis demonstrated that all three groups provided sufficient bond strength with over 90% survival rate at normal masticatory and orthodontic force levels. A Kruskal-Wallis test showed no significant difference (P > .05) in ARI scores among all three groups. Conclusions: All three groups demonstrated clinically acceptable bond strength. The Damon 2 self-ligating bracket exhibited satisfactory in vitro bond strength with both adhesive systems used.

Download Full-text

Effect of Adhesion Boosters on the Indirect Bonding with the Lingual Brackets: An In Vitro Study

The Journal of Indian Orthodontic Society ◽

10.1177/0301574220959047 ◽

2020 ◽

pp. 030157422095904

Author(s):

Sanad Kumar Singh Solanki ◽

Yogesh Gupta ◽

Varunjeet Chaudhary ◽

Thiyam Nickychandra ◽

Shubhuda Pai ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Testing Machine ◽

Control Group ◽

Human Teeth ◽

Posterior Teeth ◽

Indirect Bonding ◽

Group 3 ◽

Group 2 ◽

Lingual Brackets

Aims and Objectives: To evaluate the influence of the two adhesion boosters (assure universal bonding resin and enhance adhesion booster) on the shear bond strengths of indirectly bonded lingual brackets. Materials and Methods: A total of 120 extracted human teeth were randomly divided into 3 groups (n = 40), each group contained equal number of anterior and posterior teeth (anterior = 20, posterior = 20), and their lingual surfaces were etched by using 37% phosphoric acid. The bracket was bonded indirectly without using adhesion booster in group 1 (control group). In group 2, the adhesion booster A (enhance adhesion booster) and adhesion booster B (assure universal bonding resin) in group 3 were applied, respectively, before the bonding. The universal testing machine was used to measure the maximum bond strength. Student’s t-test followed by the one-way analysis of variance was used to compare shear bond strength among the groups. Results: The shear bond strength was found to be highest in group 3, followed by group 2, and it was least in controls. There were highly significant differences statistically in shear bond strength among the groups 1, 2, and 3 ( P = .001). Conclusion: Shear bond strength was admissible in all the groups. The application of the assure universal bonding resin significantly increased the bond strength of lingual brackets in indirect bonding.

Download Full-text

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

Brazilian Dental Journal ◽

10.1590/s0103-64402003000200011 ◽

2003 ◽

Vol 14 (2) ◽

pp. 132-135 ◽

Cited By ~ 25

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.

Download Full-text

Effect of surface treatment of prefabricated teeth on shear bond strength of orthodontic brackets

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.22.4.047-052.oar ◽

2017 ◽

Vol 22 (4) ◽

pp. 47-52 ◽

Cited By ~ 2

Author(s):

Marina Cumerlato ◽

Eduardo Martinelli de Lima ◽

Leandro Berni Osorio ◽

Eduardo Gonçalves Mota ◽

Luciane Macedo de Menezes ◽

...

Keyword(s):

Bond Strength ◽

Surface Treatment ◽

Shear Bond Strength ◽

Testing Machine ◽

Surface Treatments ◽

Orthodontic Brackets ◽

Positive Correlation ◽

Diamond Bur ◽

Group 2 ◽

Group 1

ABSTRACT Objective: The aim of this in vitro study was to evaluate and compare the effects of grinding, drilling, sandblasting, and ageing prefabricated teeth (PfT) on the shear bond strength (SBS) of orthodontic brackets, as well as the effects of surface treatments on the adhesive remnant index (ARI). Methods: One-hundred-ninety-two PfT were divided into four groups (n = 48): Group 1, no surface treatment was done; Group 2, grinding was performed with a cylindrical diamond bur; Group 3, two drillings were done with a spherical diamond bur; Group 4, sandblasting was performed with 50-µm aluminum oxide. Before the experiment, half of the samples stayed immersed in distilled water at 37oC for 90 days. Brackets were bonded with Transbond XT and shear strength tests were carried out using a universal testing machine. SBS were compared by surface treatment and by ageing with two-way ANOVA, followed by Tukey’s test. ARI scores were compared between surface treatments with Kruskal-Wallis test followed by Dunn’s test. Results: Surface treatments on PfT enhanced SBS of brackets (p< 0.01), result not observed with ageing (p= 0.45). Groups II, III, and IV showed higher SBS and greater ARI than the Group 1 (p< 0.05). SBS was greater in the groups 3 and 4 (drilling, sandblasting) than in the Group 2 (grinding) (p< 0.05). SBS and ARI showed a positive correlation (Spearman’s R2= 0.57; p< 0.05). Conclusion: Surface treatment on PfT enhanced SBS of brackets, however ageing did not show any relevance. Sandblasting and drilling showed greater SBS than grinding. There was a positive correlation between SBS and ARI.

Download Full-text

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

Journal of Contemporary Dentistry ◽

10.5005/jp-journals-10031-1109 ◽

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.

Download Full-text

An Evaluation of Shear Bond Strength of Self-Etch Adhesive on Pre-etched Enamel: An in vitro Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1446 ◽

2013 ◽

Vol 14 (6) ◽

pp. 1036-1038

Author(s):

Abdul Mujeeb ◽

Bhadra Rao ◽

Satti Narayana Reddy ◽

Kanchan Mehta ◽

G Saritha

Keyword(s):

Statistical Analysis ◽

Bond Strength ◽

Shear Bond Strength ◽

Occlusal Surfaces ◽

Group 3 ◽

The Mean ◽

Group 2 ◽

Self Etch ◽

Group 1

ABSTRACT Aim To determine the shear bond strength of self-etch adhesive G-bond on pre-etched enamel. Materials and methods Thirty caries free human mandibular premolars extracted for orthodontic purpose were used for the study. Occlusal surfaces of all the teeth were flattened with diamond bur and a silicon carbide paper was used for surface smoothening. The thirty samples were randomly grouped into three groups. Three different etch systems were used for the composite build up: group 1 (G-bond self-etch adhesive system), group 2 (G-bond) and group 3 (Adper single bond). Light cured was applied for 10 seconds with a LED unit for composite buildup on the occlusal surface of each tooth with 8 millimeters (mm) in diameter and 3 mm in thickness. The specimens in each group were tested in shear mode using a knife-edge testing apparatus in a universal testing machine across head speed of 1 mm/ minute. Shear bond strength values in Mpa were calculated from the peak load at failure divided by the specimen surface area. The mean shear bond strength of all the groups were calculated and statistical analysis was carried out using one-way Analysis of Variance (ANOVA). Results The mean bond strength of group 1 is 15.5 Mpa, group 2 is 19.5 Mpa and group 3 is 20.1 Mpa. Statistical analysis was carried out between the groups using one-way ANOVA. Group 1 showed statistically significant lower bond strength when compared to groups 2 and 3. No statistical significant difference between groups 2 and 3 (p < 0.05). Conclusion Self-etch adhesive G-bond showed increase in shear bond strength on pre-etched enamel. How to cite this article Rao B, Reddy SN, Mujeeb A, Mehta K, Saritha G. An Evaluation of Shear Bond Strength of Self-Etch Adhesive on Pre-etched Enamel: An In vitro Study. J Contemp Dent Pract 2013;14(6):1036-1038.

Download Full-text

ASSESSMENT OF SHEAR BOND STRENGTH IN DIRECT AND INDIRECT BONDING TECHNIQUES.

10.36106/6435349 ◽

2020 ◽

pp. 11-14

Author(s):

Sonali Mahadevia ◽

Bhavya Trivedi ◽

Arth Patel ◽

Mauli Shah ◽

Vaishali Gayakwad

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

T Test ◽

Orthodontic Brackets ◽

Indirect Bonding ◽

Bond Strengths ◽

Group 2 ◽

Group 1

Objective: The aim of this study was to assess the shear bond strength of indirectly and directly bonded orthodontic brackets. Ninety Methods: extracted human premolars were collected and divided into two groups. In both the groups, direct bonding (group 1) and indirect bonding (group 2) a light-cured adhesive and primer (ENLIGHT LV) was used. Forty hours after bonding, the samples were De-bonded. Results: Mean shear bond strengths were 12.33, and 12.18 MPA for groups 1, and 2, respectively. The Independent Sample T-Test showed no signicant difference in mean bond strength between groups (P =.667). Conclusion: The result also showed that there was no statistically signicant difference in the shear bond strength between the direct and indirect bonding methods.

Download Full-text