Shear Bond Strength of Composite to Deep Dentin After Treatment With Two Different Collagen Cross-linking Agents at Varying Time Intervals

SUMMARY Objective This in vitro study evaluated the shear bond strength of composite resin to deep dentin using a total etch adhesive after treatment with two collagen cross-linking agents at varying time intervals. Materials and Methods Thirty freshly extracted human maxillary central incisors were sectioned longitudinally into equal mesial and distal halves (n=60). The proximal deep dentin was exposed, maintaining a remaining dentin thickness (RDT) of approximately 1 mm. The specimens were randomly divided into three groups based on the surface treatment of dentin prior to bonding as follows: group I (n=12, control): no prior dentin surface treatment; group II (n=24): dentin surface pretreated with 10% sodium ascorbate; and group III (n=24): dentin surface pretreated with 6.5% proanthocyanidin. Groups II and III were further subdivided into two subgroups of 12 specimens each, based on the pretreatment time of five minutes (subgroup A) and 10 minutes (subgroup B). Shear bond strength of the specimens was tested with a universal testing machine, and the data were statistically analyzed. Results Significantly higher shear bond strength to deep dentin was observed in teeth treated with 10% sodium ascorbate (group II) and 6.5% proanthocyanidin (group III) compared to the control group (group I). Among the collagen cross-linkers used, specimens treated with proanthocyanidin showed significantly higher shear bond strength values than those treated with sodium ascorbate. No significant difference was observed between the five-minute and 10-minute pretreatment times in groups II and III. Conclusion It can be concluded that dentin surface pretreatment with both 10% sodium ascorbate and 6.5% proanthocyanidin resulted in significant improvement in bond strength of resin composite to deep dentin.

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Impact of Various Cross Linking Agents on Dentin Adhesive Systems - an In-vitro Study

Journal of Pharmaceutical Research International ◽

10.9734/jpri/2021/v33i55a33810 ◽

2021 ◽

pp. 86-92

Author(s):

Ganapathi Vasavi Prasanna ◽

Vemareddy Rajasekhar ◽

Someshwar Battu ◽

Korrai Balaraju ◽

Seera Sudhakar Naidu ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Group Iv ◽

Bonding Agent ◽

Sodium Ascorbate ◽

Cross Linking ◽

Group Iii ◽

Group I ◽

Self Etch

Aims and Objectives: The main aim of this study is to compare and evaluate the shear bond strength of composite resin using a total etch adhesive and self-etch adhesive after treatment with different collagen cross-linking agents. Materials and Methods: Forty freshly extracted human maxillary central incisors were taken. The proximal dentin was exposed, cavities were prepared on mesial and distal of each tooth. The specimens were randomly divided into two groups based on bonding agent applied-Group A and Group B i.e universal bonding agent and all in one bonding agent respectively and are subdivided into four groups based on the surface treatment of dentin. Group I A (n=10) Control-total etch(CTE); Group II A (n=10) Sodium Ascorbate-total etch (STE); Group III A (n=10)- Proanthocyanidin total etch(PTE); Group IV A (n=10)- Chitosan total etch (CHTE); Group I B (n=10) Control-self etch (CSE); Group II B (n=10) Sodium Ascorbate-self etch(SSE); Group III B (n=10)- Proanthocyanidin self-etch (PSE); and Group IV B (n=10) - Chitosan self-etch (CHSE). Shear bond strength of the specimens are tested with universal testing machine, and the data was statistically analysed with one way ANOVA. Results: Significantly higher shear bond strength to dentin was observed in teeth treated with 6.5% Proanthocyanidin Total etch, 10% Sodium Ascorbate Total etch and 1% Chitosan acetate compared to the control group. No significant difference was seen with self-etch treated groups. Conclusion: Dentin surface pretreatment with 6.5% Proanthocyanidin, 10% Sodium Ascorbate and 1% Chitosan acetate results in significant enhancement in bond strength of composite resin to deep dentin.

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Comparative evaluation of the effect of decontamination protocol on the shear bond strength of eighth generation bonding agent to contaminated dentin: an in vitro study

Medicine and Pharmacy Reports ◽

10.15386/mpr-1488 ◽

2020 ◽

Author(s):

Manasi Kewlani ◽

Suparna Ganguly Saha ◽

Anuj Bhardwaj ◽

Mainak Kanti Saha ◽

Prashansa Vijaywargiya ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

In Vitro Study ◽

Bonding Agent ◽

Hemostatic Agent ◽

Sodium Ascorbate ◽

Cross Linking ◽

Collagen Cross Linking

Introduction. This in vitro study aims to evaluate and compare the effect of decontamination protocol - based on sodium hypochlorite - NaOCl, as a decontaminating agent, followed by the application of a collagen cross-linking agent like sodium ascorbate [Na Ascorbate] or Proanthocyanidin [PA]) on the shear bond strength of eighth generation bonding agent to contaminated dentin (saliva, blood and blood followed by hemostatic agent). Methodology. The buccal surfaces of extracted premolars were flattened to expose the dentine. The teeth were then randomly divided into 3 groups based on the contaminant used (saliva, blood and blood followed by hemostatic agent). Decontamination protocol was carried out with sodium hypochlorite followed by application of either of the two collagen cross-linking agents (sodium ascorbate/proanthocyanidin) in each group. FuturaBond DC (eighth generation) bonding agent was used to bond composite to dentin surfaces which was subjected to shear bond strength testing. Data was analyzed by one-way ANOVA and Tukey test. Results All the groups (contaminated with saliva, blood, or hemostatic agent) showed a decrease in shear bond strength of composite resin to dentin. The shear bond strength of composite resin to dentin was least affected by contamination with saliva followed by contamination with blood and was most affected by contamination with a hemostatic agent. The decontamination protocol carried out showed that the combination of NaOCl and Proanthocyanidin improved the shear bond strength of composite to dentin significantly more than the combination of NaOCl and sodium ascorbate or ofsodium hypochlorite used alone.

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Comparative Evaluation of Immediate Bond Strength to Bleached Enamel Following Application of Various Antioxidant Solutions

Dental Journal of Advance Studies ◽

10.1055/s-0038-1672088 ◽

2017 ◽

Vol 05 (02) ◽

pp. 084-089

Author(s):

Alisha Dhingra ◽

Ashu Gupta ◽

Anshu Minocha ◽

Nayantara Sen

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

The Other ◽

Sodium Ascorbate ◽

Group V ◽

Group I ◽

Significant Difference

Abstract Aim: The aim of this study was to compare the reversal of shear bond strength of composite to bleached enamel immediately after bleaching followed by application of various antioxidant solutions. Material and Methods: Seventy central incisors were divided into seven groups. Groups I and II served as unbleached and bleached controls respectively. Groups III, IV, V, VI and VII served as the experimental groups and were subjected to 37.5% hydrogen peroxide bleaching followed by 10 min application of 10% sodium ascorbate, 25% alpha-tocopherol, 6.5% grape seed extract, 5% lycopene and 5% green tea extract respectively. Following composite bonding, shear bond strength was determined and the results were analyzed using ANOVA followed by Post Hoc Multiple Comparisons test. Results: The bond strength values for Group I (positive control) were maximum and significantly different than all the other groups except Grape seed extract group (Group V). When compared to Group II (bleached control), all the groups showed significantly higher bond strength. Significant difference in the bond strength values were seen between Group III (10% sodium ascorbate) and Group V. Also values for Group V were significantly different from Group VI (5% lycopene). All the other values showed insignificantly different results. Conclusion: All the antioxidant solutions improved the shear bond strength values after bleaching but only Grape seed extract application reversed the values to the non bleached levels. Lycopene was least effective. Other antioxidants showed comparable results.

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Analysis of surface conditioning methods on core-veneer bond strength of CAD/CAM zirconia restorations

Technology and Health Care ◽

10.3233/thc-202539 ◽

2020 ◽

pp. 1-11

Author(s):

Anip K. Roy ◽

Govind N. Prasad ◽

Tushar V. Bhagat ◽

Saurabh Chaturvedi ◽

Vishwanath Gurumurthy ◽

...

Keyword(s):

Electron Microscope ◽

Bond Strength ◽

Shear Bond Strength ◽

Group Iv ◽

Control Group ◽

Group Iii ◽

Surface Conditioning ◽

Group I ◽

Alumina Particles ◽

Scanning Electron

BACKGROUND: The increased strength of zirconia has resulted in its widespread application in clinical dentistry. Nevertheless, the fracture of veneering porcelains remains one of the key reasons of failure. OBJECTIVE: The objective of this study was to compare and analyze the influence of surface conditioning methods on the core-veneer bond strength of zirconia restorations. METHODS: Thirty specimens of zirconia core with sizes 10 × 5 × 5 mm were layered with porcelain of sizes 5 × 3 × 3 mm. On the basis of different surface conditioning methods, four groups were made: Group I: abrasion with airborne alumina particles of 110 μm size, Group II: sandblasting with silica coated alumina particles of 50 μm in size, Group III (modified group): alteration with a coating of zirconia powder prior to sintering, and Group IV (control group): metal core specimens. The shear force of all specimens was tested using a universal testing machine with a 0.5 mm/min crosshead speed. One-way analysis of variance (ANOVA) and Tukey’s post hoc pair wise comparison (p= 0.05) were performed to analyze the shear bond strength. A scanning electron microscope was used to assess the fractured specimens. RESULTS: A statistically significant difference was noted between the groups. The mean value of shear bond strength was 40.25 MPa for Group I, 41.93 MPa for Group II, 48.08 MPa for Group III and 47.01 MPa for Group IV. CONCLUSIONS: The modified zirconia group and control group demonstrated a significantly higher mean bond strength than that of Group I, where airborne particle abrasion was used. The scanning electron microscope showed that cohesive fracture in the porcelain veneers was the main problem of failure in altered zirconia. The modified zirconia specimens in Group III demonstrated significantly improved values of shear bond strength.

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Assessment of shear bond strength of brackets bonded by direct and indirect techniques: an in vitro study

Dental Press Journal of Orthodontics ◽

10.1590/s2176-94512012000400008 ◽

2012 ◽

Vol 17 (4) ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

Roberto Hideo Shimizu ◽

Karlos Giovani Grando ◽

Isabela Almeida Shimizu ◽

Augusto Ricardo Andriguetto ◽

Ana Cláudia Moreira Melo ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

In Vitro Study ◽

Adhesive System ◽

Vitro Study ◽

Group Iii ◽

Indirect Bonding ◽

Group I ◽

Group Ii

OBJECTIVE: This in vitro study was designed to evaluate the shear bond strength (SBS) of orthodontic metal brackets bonded by direct and indirect techniques. METHODS: Thirty healthy human maxillary premolar teeth were used. The teeth were divided into three groups of 10 teeth each: Group I - indirect bonding with SondhiTM Rapid-Set system (3M/Unitek), Group II - indirect bonding with TransbondTM XT adhesive system (3M/Unitek) and Group III - direct bonding with TransbondTM XT adhesive system (3M/Unitek). After bonding and obtaining the specimens for the study, the specimens were subjected to SBS testing in a universal testing machine (Emic, model DL-500). The Kolmogorov-Smirnov test was applied to ascertain that the data had a normal distribution and the Bartlett test to check whether there was homogeneity of variance. One-factor analysis of variance was performed and, subsequently, Tukey's test for paired means. A 5% significance level was adopted. RESULTS: The results of Group I were 67.6 (N) and 5.9 (MPa); Group II, 68.9 (N) and 6.1 (MPa) and Group III (control), 92.5 (N) and 8.1 (MPa). CONCLUSION: It can therefore be concluded that the means for Group III were significantly higher compared with Groups I and II in both Newton (N) and Megapascal (MPa) values. The means attained by the indirect bonding technique used in Groups I and II, however, exhibited no statistically significant differences.

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Comparative Evaluation of the Shear Bond Strength and Debonding Properties of a Conventional Composite and Flowable Composites used for Orthodontic Bracket Bonding

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1195 ◽

2013 ◽

Vol 4 (1) ◽

pp. 6-16 ◽

Cited By ~ 1

Author(s):

BM Shivalinga ◽

S Pradeep ◽

Ravi Shanthraj ◽

H Jyothi Kiran

Keyword(s):

Stainless Steel ◽

Bond Strength ◽

Comparative Evaluation ◽

Shear Bond Strength ◽

Orthodontic Bracket ◽

Group Iii ◽

Flowable Composite ◽

Group I ◽

Adhesive Remnant Index ◽

Flowable Composites

ABSTRACT Aim To evaluate and compare shear bond strength (SBS) and debonding characters of the Transbond XT (BisGMA-based composite), Esthet-X flow (flowable composite), Filtek Z-350 (flowable composite). Materials and methods A total of 90 human premolars were divided into group I, Transbond XT (n = 30); group II, Esthet-X flow (n = 30) and group III, Filtek Z-350 (n = 30), the preadjusted edgewise stainless steel premolar brackets were bonded to evaluate the shear bond and debonding properties. Results The results of the statistical analysis comparing the three groups indicated no statistically significant differences between the groups. In general, the SBS with groups I and III exhibited similar bond strength with 11.58 ± 1.3 MPa and 11.07 ± 1.0 MPa respectively. Groups III exhibited least bond strength of 10.7 ± 2 MPa. In modified adhesive remnant index (ARI) the majority of bond failures occurred at enamel-adhesive interface or cohesive type failure in all the three groups. Groups II and III showed increased frequency of score 2, 4 and 5 compared to group I which showed increased frequency of score 0 and 1. Conclusion When considering the SBS and ARI scores obtained, flowable composites can be effectively applied to orthodontic bracket bonding. How to cite this article Pradeep S, Shanthraj R, Kiran HJ, Shivalinga BM. Comparative Evaluation of the Shear Bond Strength and Debonding Properties of a Conventional Composite and Flowable Composites used for Orthodontic Bracket Bonding. World J Dent 2013;4(1):6-16.

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Difference in Bonding Strength of RMGIC according to Type of Hemostatic Agent in Primary Tooth

THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY ◽

10.5933/jkapd.2021.48.4.460 ◽

2021 ◽

Vol 48 (4) ◽

pp. 460-466

Author(s):

Seolah Back ◽

Joonhaeng Lee ◽

Jongbin Kim ◽

Miran Han ◽

Jong Soo Kim

Keyword(s):

Bond Strength ◽

Aluminum Chloride ◽

Shear Bond Strength ◽

Ferric Sulfate ◽

Aluminium Chloride ◽

Hemostatic Agent ◽

Primary Tooth ◽

Group Iii ◽

Group I ◽

Group Ii

The purpose of this study was to compare the effect of the hemostatic agent containing aluminum chloride with hemostatic agent containing ferric sulfate on the shear bond strength of resin-modified glass ionomer cement(RMGIC) to dentin in primary tooth. Twenty extracted non-carious human primary teeth were collected in this study. The specimens were cut to expose dentin and polished. The specimens were randomly seperated into 3 groups for treatment; group I: polyacrylic acid(PAA), RMGIC; group II: aluminum chloride, PAA, RMGIC; group III: ferric sulfate, PAA, RMGIC Ten specimens from each group were subjected to shear bond strength test. The mean shear bond strength of each group was as follows: 10.07 ± 1.83 MPa in Group I, 7.62 ± 0.78 MPA in group II, 5.23 ± 0.78 MPa in group III. There were significant differences among all groups(p < 0.001). In conclusion, both aluminum chloride hemostatic agent and ferric sulfate hemostatic agent decreased the shear bond strength of RMGIC to dentin. And ferric sulfate hemostatic agent decreased the shear bond strength of RMGIC more than the aluminium chloride hemostatic agent.

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The Influence of Resin Infiltration Pretreatment on Orthodontic Bonding to Demineralized Human Enamel

Applied Sciences ◽

10.3390/app10103619 ◽

2020 ◽

Vol 10 (10) ◽

pp. 3619

Author(s):

Marina Simunovic Anicic ◽

Cecilia Goracci ◽

Jelena Juloski ◽

Ivana Miletic ◽

Senka Mestrovic

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Present Report ◽

Group Iv ◽

Group Iii ◽

Low Viscosity ◽

Initial Caries ◽

Group I ◽

Demineralized Enamel ◽

The Difference

Prior research reveal that low-viscosity resin is able to significantly penetrate initial caries lesions, which leads to their stabilization. The objective of the present report is to assess the shear bond strength (SBS) of orthodontic brackets bonded with different adhesives to demineralized enamel treated with a low-viscosity resin infiltrant. It also aims to compare the achieved bond strengths to those achieved in relation to sound enamel (SE). A total of 48 newly extracted third molars were collected, distributed in four groups (n=12), covered with a nail varnish, with 4 x 4 mm of uncoated area, immersed in Buskes demineralizing solution (14 days, 37 °C) or remained untreated. Group I: SE + Transbond XT; Group II: demineralized enamel (DE) + ICON + Transbond XT; Group III: DE + ICON + Scotchbond Universal; Group IV: DE + ICON + Assure PLUS. SBS was quantified in megapascals (MPa) and statistically analyzed (ANOVA, p ≤ 0.05). The mode of failure was assessed microscopically (10 x magnification). The highest SBS detected was in Group IV, and the difference was statistically significant (F = 14.37; p = 0.000). Treatment with a resin infiltrant on DE does not impair the shear bond strength when compared to SE, although it does produce a significantly higher strength when combined with Assure PLUS.

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Comparative evaluation of superoxide dismutase, alpha-tocopherol, and 10% sodium ascorbate on reversal of shear bond strength of bleached enamel: An in vitro study

European Journal of Dentistry ◽

10.4103/1305-7456.175693 ◽

2016 ◽

Vol 10 (01) ◽

pp. 109-115 ◽

Cited By ~ 6

Author(s):

Mahendran Kavitha ◽

Sharmila Selvaraj ◽

Ambica Khetarpal ◽

Aruna Raj ◽

Shakunthala Pasupathy ◽

...

Keyword(s):

Superoxide Dismutase ◽

Bond Strength ◽

Shear Bond Strength ◽

Testing Machine ◽

Alpha Tocopherol ◽

Sodium Ascorbate ◽

Control Group ◽

Group I ◽

Antioxidant Agents ◽

Significant Difference

ABSTRACT Objective: The aim of this study was to investigate the neutralizer effect of antioxidant agents on the bond strength of bleached enamel. Materials and Methods: Sixty enamel slabs were prepared from 60 freshly extracted maxillary central incisors and were divided into six groups. The negative control group received no bleaching treatment and the other groups were bleached with 35% carbamide peroxide (Opalescence Quick; Ultradent, South Jordan, USA). In Group II, composite was built immediately after bleaching and cured without any antioxidants. In Group III, bleached specimens received composite build ups delayed by 1 week. In Groups IV, V, and VI bleached specimens received applications of superoxide dismutase (SOD), sodium ascorbate (SA), and tocopherol solutions, respectively, for 10 min. Following composite bonding, the micro shear bond strength (μSBS) was measured at a speed of 1 mm/min in universal testing machine. Statistical Analysis Used: The μSBS values of all the groups were analyzed using the analysis of variance followed by Tukey honestly significant difference post-hoc test. Results: Bonding of composites to unbleached group (Group I) exhibited the highest mean SBS values and among the antioxidant-treated groups, the highest SBS values were seen with SOD (Group IV) treated samples (23.0040 ± 4.30565 MPa). Conclusions: Application of SA, alpha-tocopherol, and SOD can effectively reverse the bond strength with bleached enamel. SOD gave a comparatively more promising reversal of bond strength than SA and alpha-tocopherol, and deserves further studies.

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