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

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

Operative Dentistry ◽

10.2341/11-232-l ◽

2012 ◽

Vol 37 (5) ◽

pp. 485-491 ◽

Cited By ~ 9

Author(s):

S Srinivasulu ◽

S Vidhya ◽

M Sujatha ◽

S Mahalaxmi

Keyword(s):

Bond Strength ◽

Surface Treatment ◽

Shear Bond Strength ◽

Sodium Ascorbate ◽

Cross Linking ◽

Time Intervals ◽

Group Iii ◽

Dentin Surface ◽

Group I ◽

Collagen Cross Linking

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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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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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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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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Shear bond strength of bulk-fill and nano-restorative materials to dentin

European Journal of Dentistry ◽

10.4103/1305-7456.175697 ◽

2016 ◽

Vol 10 (01) ◽

pp. 040-045 ◽

Cited By ~ 8

Author(s):

Hakan Colak ◽

Ertugrul Ercan ◽

Mehmet Mustafa Hamidi

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Clinical Success ◽

Testing Machine ◽

Group Iv ◽

Composite Resins ◽

Group Iii ◽

Bonding System ◽

Group I ◽

Significant Difference

ABSTRACT Objectives: Bulk-fill composite materials are being developed for preparation depths of up to 4 mm in an effort to simplify and improve the placement of direct composite posterior restorations. The aim of our study was to compare shear-bond strength of bulk-fill and conventional posterior composite resins. Materials and Methods: In this study, 60 caries free extracted human molars were used and sectioned parallel to occlusal surface to expose midcoronal dentin. The specimens were randomly divided into four groups. Total-etch dentine bonding system (Adper Scotchbond 1XT, 3M ESPE) was applied to dentin surface in all the groups to reduce variability in results. Then, dentine surfaces covered by following materials. Group I: SonicFill Bulk-Fill, Group II: Tetric EvoCeram (TBF), Group III: Herculite XRV Ultra, and Group IV: TBF Bulk-Fill, 2 mm × 3 mm cylindrical restorations were prepared by using application apparatus. Shear bond testing was measured by using a universal testing machine. Kruskal–Wallis and Mann–Whitney U-tests were performed to evaluate the data. Results: The highest value was observed in Group III (14.42 ± 4.34) and the lowest value was observed in Group IV (11.16 ± 2.76) and there is a statistically significant difference between these groups (P = 0.046). However, there is no statistically significant difference between the values of other groups. In this study, Group III was showed higher strength values. Conclusion: There is a need for future studies about long-term bond strength and clinical success of these adhesive and bulk-fill systems.

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Aplikasi klorheksidin glukonat 2%pada dentin tidak mempengaruhi kuat rekat geserkomposit resinyangmenggunakansistem adesif self etch (2% Chlorhexidine gluconate application on dentine does not affect bond strength of resin composite using self etch adhesive system)

Journal of Dentomaxillofacial Science ◽

10.15562/jdmfs.v13i1.379 ◽

2014 ◽

Vol 13 (1) ◽

pp. 7

Author(s):

Dewi Puspitasari ◽

Andi Soufyan ◽

Ellyza Herda

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Resin Composite ◽

Testing Machine ◽

Adhesive System ◽

Chlorhexidine Gluconate ◽

Adhesive Systems ◽

Group I ◽

Self Etch

Composite resin is a widely used aesthetic restoration. The restoration can fail due to secondary caries. Chlorhexidinegluconate 2% is used as a cavity disinfectant to eliminate microorganisms on the prepared cavity and to prevent thesecondary caries. The purpose of this study was to analyze the effect of chlorhexidine gluconate 2% to the bondstrength of composite resin with self etch system adhesive on dentine. Sixteen specimens of buccal dentine of premolarscrown are divided into 2 different groups. Group I: Clearfil SE Bond self-etch primer was applied for 20 seconds,Clearfil SE Bond bonding was applied for 5 seconds and polymerized for 10 seconds. Composite resin was constructedincrementally and polymerized for 20 seconds. Group II: prior to self etch primer application as in group I,chlorhexidine gluconate 2% was applied for 15 seconds. Shear bond strength was tested using Testing machine andanalyzed with unpaired T test. The highest shear bond strength was obtained by applying chlorhexidine gluconate 2%.The study concludes that chlorhexidine gluconate 2% application to dentine did not affect significantly to the bondstrength composite resin using self etch adhesive systems.

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Comparison of the Shear bonding Strength of ION-Z GIC to a Resin Composite Using Different Adhesive Systems: RCT Study

10.21203/rs.3.rs-31621/v1 ◽

2020 ◽

Author(s):

Sana Lala ◽

Thuraya Lazkani

Keyword(s):

Bond Strength ◽

Bonding Strength ◽

Shear Bond Strength ◽

Resin Composite ◽

Testing Machine ◽

Group Iii ◽

Group I ◽

Significant Difference ◽

Self Etch ◽

Shear Bonding Strength

Abstract Background:In restorative dentistry we usually use Sandwich Technique for posterior restorations where GIC is placed below and a resin composite is placed over it. The bonding strength between these two materials are low. We are looking for the best adhesive system to put it in between. We think that the self-etching bond will give the best bonding strength between them whereas total etch will give lower bonding strength than self-etching system. Methods:ION-Z GIC was bonded to resin composite by using two different bonding agents. The thirty specimens used were prepared by using acrylic blocks with holes in each hole to retain the ION-Z GIC. The specimens were randomly divided into three groups:Group I: Control group.Group II: Total-etch adhesive was applied and cured over ION-Z GIC.Group III: Self-etch adhesive was applied and cured.The composite resin placed over the ION-Z GIC and cured. The shear bond strength was measured by shearing of the bonded specimens on Universal Testing Machine (Model 114) using speed of 0.1mm / minute. The reading was tabulated and subjected to statistical analysis using ANOVA and Tukey's test.Results:The test showed statistically significant difference between Group III and Group I and between Group III and Group II. Group III had the highest shear bonding strength.Conclusion:Self-etch adhesive agent produces have better shear bond strength to ION-Z than total-etch adhesive and to the group without any bonding agent.

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Resistência de união ao cisalhamento entre a resina composta e dentes artificiais de resina acrílica

Prosthesis and Esthetics in Science ◽

10.24077/2021;1040-3337 ◽

2021 ◽

Vol 10 (40) ◽

pp. 33-37

Author(s):

Joyce de Figueiredo Meira Barbosa ◽

Lara Pepita de Souza Oliveira ◽

Marcelo Nascimento Bruce ◽

Jonas Alves Oliveira ◽

Ligia Regina Mota Vasconcelos ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Testing Machine ◽

Acrylic Resin ◽

Single Bond ◽

Group Iii ◽

Group I ◽

Significant Difference ◽

Artificial Teeth

Acrylic denture teeth may suffer fracture or wear requiring the need for repair. This study aimed to evaluate the shear bond strength between acrylic resin artificial teeth restored with composite resin (with two different surface treatments) and acrylic resin (AR), simulating repair with these materials. Thirty artificial incisors were included by the palatal side in a circular microwave-polymerized AR base and polished on their buccal side with 120 and 320 grit sandpaper in a metallographic polisher and, then, divided into three groups: (I) restoration with self-cured AR; (II) conventional restoration with Z-100 composite resin with application of acid etching and Single Bond-3M adhesive; and (III) restoration with Z-100 composite resin with submersion for 30 seconds in acetone and application of Single Bond-3M adhesive. Shear bond strength tests were performed in a Universal Testing Machine (Instron). The results were submitted to ANOVA and Tukey (p<0.05) tests, in which Group I (33.26MPa ±10.76) and Group III (22.24MPa ±13.13) showed no statistically significant difference, but both were superior to Group II (10.31MPa ±5.62), which showed a lower value of shear bond strength. It can be concluded that composite resin restoration with acetone pretreatment can be a viable alternative for repair.

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Effect of Bonding Agent on Retention of Different Sealants: An in Vitro Study

Journal of Clinical Pediatric Dentistry ◽

10.17796/1053-4625-45.3.6 ◽

2021 ◽

Vol 45 (3) ◽

pp. 177-185

Author(s):

Moaz H Attar ◽

Medhat A Abdallah ◽

Hussein A Alharthy ◽

Omar A El Meligy

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

In Vitro Study ◽

Bonding Agent ◽

Micro Ct ◽

Group Iii ◽

Group I ◽

Significant Difference ◽

Sealant Retention

Objectives: To investigate the effect of Co-curing versus Staged-curing and No-bonding on retention of different resin-based sealants (RBS). Study design: For shear bond strength (SBS) and microleakage tests, 90 extracted premolars were divided equally into 3 groups (I, II, III). Each group was further subdivided equally into 3 subgroups (a, b, c). No-bonding subgroups did not receive a bonding agent, Staged-curing subgroups received a bonding agent that was cured before sealant application, while Co-curing subgroups received a bonding agent that was cured after sealant application. Seal-it was applied for group I, Helioseal-F for group II and Clinpro for group III. SBS buttons were tested using Instron machine, while microleakage specimens were examined using micro-CT. Results: Clinpro showed the highest SBS values in Staged-curing and No-bonding groups (8.72±2.39, 12.51±3.16) respectively. Staged-curing was significantly greater in SBS values than those for other groups (P<0.05). There was a significant difference in microleakage values of Staged-curing among different RBS (P = 0.003), while there was no significant difference in values of No-bonding and Co-curing among different RBS (P = 0.541, P = 0.521). Conclusions: The use of a bonding agent as Staged-curing was more effective in improving sealant retention than No-bonding and Co-curing.

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The effect of caries detector dyes and a cavity cleansing agent on composite resin bonding to enamel and dentin

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.25.1.781012816642v3t5 ◽

2001 ◽

Vol 25 (1) ◽

pp. 57-63 ◽

Cited By ~ 14

Author(s):

Azza El-Housseiny ◽

Hana Jamjoum

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Composite Resin ◽

Testing Machine ◽

Group Iv ◽

Acid Etching ◽

Group V ◽

Universal Testing ◽

Group I ◽

Significant Difference

This study was undertaken to evaluate the effect of caries detector dyes and/or cavity cleanser on composite bonding and etching patterns of enamel and dentin. One hundred and eight non-carious premolars were divided into six groups according to the enamel and dentin pretreatment investigated. The different pretreatment were as follows: Group I: teeth with prophylaxis only, Group II: Sable seek caries detector dye,Groups III: chlorhexidine cavity cleanser,Group IV: the caries detectors dye followed by prophylaxis, Group V: the cavity cleanser followed by the caries detector dye, and Group IV: Snoop caries detector dye. The shear bond strength of composite resin bonded to enamel and dentin was evaluated by the Instron Universal testing machine while, the topographic details of enamel and dentin were examined by the SEM following the different pretreatment and acid etching. Results of the shear bond strength showed no statistically significant difference among the six groups, with no substantial differences in SEM results. It is concluded that using the caries detector dyes and/or chlorhexidine cavity cleanser before acid etching does not significantly affect composite bonding to enamel and dentin.

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