scholarly journals Shear bond strength to sound and caries-affected dentin of sim-plified “etch-and-rinse” and “self-etch” adhesives and the hybrid layer micromorphology

2019 ◽  
Vol 76 (7) ◽  
pp. 675-683 ◽  
Author(s):  
Milan Drobac ◽  
Igor Stojanac ◽  
Bojana Ramic ◽  
Milica Premovic ◽  
Ljubomir Petrovic
Keyword(s):  
Bond Strength ◽  
Layer Thickness ◽  
Shear Bond Strength ◽  
Control Sample ◽  
Experimental Sample ◽  
Single Bond ◽  
Hybrid Layer ◽  
System A ◽  
Etch And Rinse ◽  
Significant Difference

Background/Aim. After removal of caries-infected dentin, a considerable area of the cavity floor comprising caries- affected dentin. Bonding to caries-affected dentin is characterized by lower bound strength and inferior hybrid layer guality compared to bonding to sound dentin. The purpose of study was to compare shear bond strength (SBS) of currently available adhesive systems to sound dentin (SD) and caries-affected dentin (CAD) and elucidate the hybrid layer micromorphology. Methods. Sixty extracted human molars with coronal carious lesions formed the experimental sample while additional sixty extracted intact human molars (impacted third molars) served as controls. Identification of a carious-affected dentin was carried out using visual identification (North Carolina Dentin Sclerosis Scale). Teeth from both the experimental and the control sample were allocated to one of the following three groups: Adper Single Bond Plus/Filtek Supreme XT (ASB/FS) (3M ESPE), AdheSE One/Tetric EvoCeram (AO/TEC) (IvoclarVivadent), and Prime&Bond NT/CeramX Mono (PB/CXM) (Dentsply). Bonding procedures utilized in this work were in line with the manufacturers? instructions. The SBS was measured using a universal testing apparatus. Hybrid layer micromorphology was observed under scanning electron microscope (SEM). The mean SBS values (MPa), and hybrid layer thickness (in ?m) were statistically analyzed using the t-test, Mann-Whitney U-test, ANOVA, and Holm?s test. Results. Mean SBS ? standard deviation were: ASB/FS to SD = 10.56 ? 3.49; ASB/FS to CAD = 10.06 ? 2.55; AO/TEC to SD = 7.01 ? 2.05; AO/TEC to CAD = 6.73 ? 1.66; PB/CXM to SD = 9.01 ? 2.47; PB/CXM to CAD = 7.83 ? 1.42. A statistically significant difference was found between the bonding strength of ASB/FS and AO/TEC to both SD and CAD, and between ASB/FS and PB/CXM to CAD. Hybrid layer thickness was statistically significantly greater for ASB/FS than for PB/CXM. For the ASB/FS system, a statistically significantly thicker hybrid layer was formed on CAD than on SD. No hybrid layer could be observed for AO/TEC. Conclusion. All tested compsite systems bond equally well on sound and caries-affected dentin. The etch-and-rinse adhesives achieved stronger bond strengths. The Adper single Bond Plus-Filtek Supreme XT system formed a statistically significantly thicker hybrid layer on both type 1 of dentin than the Primu 8 Bond NT-CeramX Mono system.

scholarly journals Effect of pretreatment with different MMP inhibitors on shear bond strength of composite to primary teeth dentin after six months of aging

2019 ◽  
Author(s):  
Zahra Parsaie ◽  
Najmeh Mohammadi ◽  
Maryam Firouzmandi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Primary Teeth ◽  
Artificial Saliva ◽  
Control Group ◽  
P Value ◽  
Single Bond ◽  
Mmp Inhibitors ◽  
Etch And Rinse ◽  
Significant Difference

AbstractBackgroundloss of hybrid layer integrity compromises the resin-dentin bond stability. Subsequent release and activation of matrix metalloproteinase enzymes during dental restorative procedures or caries development are contributing factors to dentin-adhesive bond failure.AimTo investigate the effect of pre-treatment with different MMP inhibitors on the shear bond strength (SBS) of an etch-and-rinse adhesive (Adper Single Bond 2) to primary teeth dentin after six months of aging.MethodsSixty extracted anterior primary teeth, due to orthodontic reasons, were selected. A dentin block (6.0 mm × 6.0 mm × 2.0 mm) was obtained from each tooth. All the dentin blocks (n = 60) were pretreated for 60 s with either 0.01 M phosphate buffered saline (PBS, pH 7.2) in the control group, 2%: Chlorhexidine (CHX) solution, 2% Doxycycline (DO)solution and EDTA 17% after etching and before applying etch-and-rinse adhesive system (Adper Single Bond 2). Then composite was applied in clear teflon cylinders. The specimens were stored in artificial saliva for 6 months at 37°C and then the SBS values were determined with a universal testing machine. Representative samples were selected for visualization of the failure mode under stereomicroscope and SEM.ResultsNo statistically significant difference observed between the SBS of the EDTA group, DO group and the control group (P value>0.05). CHX showed significantly higher SBS values compared to the other groups of the study after six months(P value=0.011).ConclusionChlorhexidine significantly preserved the SBS of composite resin to deciduous dentin using etch and rinse adhesive Adper Single Bond 2 after 6 months of aging in artificial saliva.

scholarly journals Effect of Different Adhesion Protocols on the Shear Bond Strength of Universal Adhesive Systems to Sound and Artificial Caries-Affected Dentin

2021 ◽  
Author(s):  
Omnia M. Sami ◽  
Essam A. Naguib ◽  
Rasha H. Afifi ◽  
Shaymaa M. Nagi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Failure Modes ◽  
Resin Composite ◽  
Single Bond ◽  
Adhesive Systems ◽  
Universal Adhesive ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Self Etch

Abstract Objective Bonding to different dentin substrates influences resin composite restoration outcomes. This study investigated the influence of different adhesion protocols on the shear bond strength of universal adhesive systems to sound and artificial caries-affected dentin (CAD). Materials and Methods Occlusal enamel of 80 premolars were wet grinded to obtain flat midcoronal dentin. Specimens were equally divided according to the substrate condition: sound and CAD by subjecting to pH-cycling for 14 days. Each dentin substrate was bonded with the adhesive systems used in this study: Single Bond universal adhesive or Prime&Bond universal (applied either in etch-and-rinse or self-etch adhesion protocol). Adhesive systems were utilized according to manufacturers’ instructions, then resin composite was built up. Specimens were tested for shear bond strength. The data were analyzed by three-way analysis of variance, and failure modes were determined using stereomicroscope. Results There was no statistically significant difference between the two tested adhesive systems on artificially created CAD with different adhesion protocols. On sound dentin, Single Bond universal, either in the etch-and-rinse or self-etch adhesion protocols, revealed higher statistically significant shear bond strength mean values compared with CAD. Conclusion Single Bond universal adhesive in an etch-and-rinse adhesion protocol improved only bonding to sound dentin, while no added positive effect for the etching step with Prime&Bond universal adhesive was found when bonded to both sound and CAD substrates. The influence of CAD on the performance of the universal adhesives was material-dependent.

scholarly journals Effect Of Chitosan Treatment On Shear Bond Strength Of Composite To Deep Dentin Using Self-Etch And Total-Etch Adhesive Systems

2021 ◽  
Vol 24 (2) ◽  
Author(s):  
Fateme Vasei ◽  
Farahnaz Sharafeddin
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Adhesive System ◽  
Single Bond ◽  
Adhesive Systems ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Self Etch

Objective: To assess the shear bond strength (SBS) of resin composite to deep dentin, using 1 and 2.5% chitosan pretreatment as well as different adhesive systems. Material and Methods: 80 human maxillary molars were randomly divided to eight groups according to the type of adhesive system and dentin pretreatment (n = 10): I) two-step self-etch system (Clearfil SE bond); II) two-step etch-andrinse system (Adper single bond 2); III) 2.5% chitosan + Clearfil SE bond; IV) 2.5% chitosan +etch + Adper single bond 2; V) etch + 2.5% chitosan + Adper single bond 2; VI) 1% chitosan + Clearfil SE bond; VII) 1% chitosan + etch + Adper single bond 2; VIII) etch + 1% chitosan + Adper single bond 2 (chitosan solution (w/v): 2.5 g and 1 g of chitosan (Sigma Aldrich, USA) was dissolved in 100 ml of 1% acetic acid). Plastic molds were positioned on dentin and filled with composite (Z350, 3M ESPE, USA). SBS (MPa) was tested using a universal testing machine. ANOVA tests, Tukey’s test, and independent t test were used to analyze data (p < 0.05). Results: The highest SBS value among self-etch groups was observed with 1% chitosan (p = 0.001). In the etch-and-rinse group, the SBS of 1% chitosan was significantly lower than the other groups. Chitosan treatment following acid etching led to higher SBS in comparison to when chitosan was applied before etching, with the significant difference in 1% concentration (p = 0.030). A predominance of mix fractures was observed in dentin. Conclusion: Improved dentin bond strength can be achieved through immediate dentin pretreatment with 1% chitosan in self-etch adhesive systems. Chitosan Pretreatment may not be advantageous for etch-and-rinse adhesive systems. Keywords Adhesive system; Chitosan; Deep dentin; Shear strength.

Effect of Ethanol Wet Bonding Technique on the Durability of Resin- Dentin Bond with Contemporary Adhesive Systems

2015 ◽  
Vol 39 (2) ◽  
pp. 133-142 ◽  
Author(s):  
R Nagpal ◽  
N Manuja ◽  
IK Pandit
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Sem Analysis ◽  
Adhesive Systems ◽  
Etch And Rinse ◽  
Two Samples ◽  
Significant Difference ◽  
Permanent Molars ◽  
Bonding Technique

Objective: To evaluate the effect of ethanol wet bonding technique on the immediate and long term bond strength of simplified etch and rinse adhesive systems to dentin. Study Design: 96 extracted human permanent molars were ground to expose the flat dentin surface. The teeth were divided into four groups (n=24) according to the adhesives used, either Tetric N Bond or Solobond M and bonding techniques i.e. water wet bonding or ethanol wet bonding (EWB). Composite cylinder was bonded to each specimen using the respective adhesive technique. Ten samples from each group were then tested immediately for shear bond strength evaluation and two samples for SEM analysis. The remaining samples (12) were tested after 6 month storage in distilled water. Results: Upon immediate testing, there was no significant difference in the mean shear bond strength of the groups regardless of the bonding technique or adhesive used. The bond strength fell dramatically in the water wet bonded specimens after 6 months water storage, while the bond strength of both the adhesives was maintained when EWB technique was used. SEM observation revealed good interfacial adaptation in EWB groups even after six months. Conclusion: For both simplified etch and rinse adhesives used, ethanol wet bonding technique led to significant preservation of the resin dentin bond over 6 months.

scholarly journals Microshear Bond Strength of Different Adhesive Systems to Dentin

2019 ◽  
Author(s):  
Sara Valizadeh ◽  
Aida Moradi ◽  
Mansooreh Mirazei ◽  
Hooman Amiri ◽  
Mohammad Javad Kharazifard
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Single Bond ◽  
Adhesive Systems ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Microshear Bond Strength ◽  
Self Etch ◽  
Composite Cylinders

Objectives: The aim of this study was to compare the microshear bond strength (µSBS) of various adhesive systems to dentin. Materials and Methods: In this in vitro experimental study, 60 sound human third molars were divided into four groups. Dentin discs were prepared of middle-third dentin measuring 4 mm in diameter and 2 mm in thickness. Dentin surfaces were bonded with one of the four types of adhesives: (A) Single Bond (3M ESPE), Scotchbond Universal (3M ESPE) in etch and rinse (B) and self-etch (C) modes and (D) Clearfil SE Bond (Kuraray Noritake Dental). After the application of adhesive systems according to the manufacturers’ instructions, composite cylinders (Vit-l-escence) were bonded to dentin surfaces. The μSBS test was performed using a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with one-way ANOVA and Tukey’s test (α=0.05). Results: The µSBS was the highest in self-etch Scotchbond Universal (15.8±6.08 MPa) followed by Clearfil SE Bond (15.24±4.6 MPa), etch and rinse Scotchbond Universal (11.68±4.07MPa) and Single Bond (11.24±3.74 MPa). A significant difference was only found between Single Bond and etch and rinse Scotchbond Universal groups (P=0.04). Conclusion: Based on the results of this study, application of Scotchbond Universal in self-etch mode provides a reliable bond to dentin.

scholarly journals The Simultaneous Effect of Extended Etching Time and Casein Phosphopeptide-Amorphous Calcium Phosphate containing Paste Application on Shear Bond Strength of Etch-and-rinse Adhesive to Caries-affected Dentin

2015 ◽  
Vol 16 (10) ◽  
pp. 794-799 ◽  
Author(s):  
Maryam Doozandeh ◽  
Milad Mirmohammadi
Keyword(s):  
Calcium Phosphate ◽  
Bond Strength ◽  
Amorphous Calcium Phosphate ◽  
Shear Bond Strength ◽  
Etching Time ◽  
Simultaneous Effect ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Mi Paste ◽  
Casein Phosphopeptide

ABSTRACT Aim This study evaluated the simultaneous effect of extended etching time and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) containing paste application on shear bond strength (SBS) of etch-and-rinse adhesive to cariesaffected- dentin (CAD). Materials and methods Fifty human third molars were used; 10 normal in group 1 and 40 caries-affected teeth in groups 2 to 5. In the CAD groups, teeth were randomly assigned into four groups (n = 10). In groups 2 and 4, phosphoric acid etching for 15 and 45 seconds was used and in groups 3 and 5, after 15 or 45 seconds etching respectively, CPP-ACP containing paste (MI paste) was applied for 3 minutes. After rinsing, single bond adhesive system and Z250 composite were used for resin composite build-up in all groups. After storage, SBS test was measured at cross head speed of 0.5 mm/min. Data were analyzed using one/two-way ANOVA and Tukey HSD test (α = 0.05). Results Normal dentin groups showed the highest SBS among different groups. There was a statistically significant difference between different etching times in CAD groups (p < 0.05), but there were no significant differences between SBS of SB adhesive to CAD with or without CPP-ACP pretreated in both etching times. Most of the failure modes were adhesive except in groups 1 and 5 which cohesive failure in composite was also observed. Conclusion The results of our study indicated that extended etching time up to 45 seconds could enhance the SBS of CAD and approach nearly to SBS of normal dentin. Moreover, MI paste pretreatment had not significant effect on SBS of etchand- rinse adhesive in CAD. Clinical significance Simultaneous application of extended etching time and CPP-ACP containing paste may be a suggested method in increasing the SBS of adhesive to CAD. How to cite this article Doozandeh M, Firouzmandi M, Mirmohammadi M. The Simultaneous Effect of Extended Etching Time and Casein Phosphopeptide-Amorphous Calcium Phosphate containing Paste Application on Shear Bond Strength of Etch-and-rinse Adhesive to Caries-affected Dentin. J Contemp Dent Pract 2015;16(10):794-799.

scholarly journals Microshear Bond Strength of Different Adhesive Systems to Dentin

2019 ◽  
Author(s):  
Sara Valizadeh ◽  
Aida Moradi ◽  
Mansooreh Mirazei ◽  
Hooman Amiri ◽  
Mohammad Javad Kharazifard
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Single Bond ◽  
Adhesive Systems ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Microshear Bond Strength ◽  
Self Etch ◽  
Composite Cylinders

Objectives: The aim of this study was to compare the microshear bond strength (µSBS) of various adhesive systems to dentin. Materials and Methods: In this in vitro experimental study, 60 sound human third molars were divided into four groups. Dentin discs were prepared of middle-third dentin measuring 4 mm in diameter and 2 mm in thickness. Dentin surfaces were bonded with one of the four types of adhesives: (A) Single Bond (3M ESPE), Scotchbond Universal (3M ESPE) in etch and rinse (B) and self-etch (C) modes and (D) Clearfil SE Bond (Kuraray Noritake Dental). After the application of adhesive systems according to the manufacturers’ instructions, composite cylinders (Vit-l-escence) were bonded to dentin surfaces. The μSBS test was performed using a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with one-way ANOVA and Tukey’s test (α=0.05). Results: The µSBS was the highest in self-etch Scotchbond Universal (15.8±6.08 MPa) followed by Clearfil SE Bond (15.24±4.6 MPa), etch and rinse Scotchbond Universal (11.68±4.07MPa) and Single Bond (11.24±3.74 MPa). A significant difference was only found between Single Bond and etch and rinse Scotchbond Universal groups (P=0.04). Conclusion: Based on the results of this study, application of Scotchbond Universal in self-etch mode provides a reliable bond to dentin.

scholarly journals Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

2017 ◽  
Vol 16 ◽  
pp. 1-7
Author(s):  
Bruna Lorena dos Santos Oliveira ◽  
Ana Rosa Costa ◽  
Américo Bortolazzo Correr ◽  
Marcus Vinicius Crepaldi ◽  
Lourenço Correr-Sobrinho ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Acrylic Resin ◽  
Single Bond ◽  
Universal Adhesive ◽  
Bonding Material ◽  
Significant Difference ◽  
Post Hoc ◽  
Group 1

Aim: To evaluate, in vitro, the effect of adhesive and bonding materials on the shear bond strength (SBS) of metallic brackets bonded to bovine teeth. Methods: Bovine teeth were embedded with acrylic resin, etched with 35% phosphoric acid for 20 s, rinsed, dried for 20 s and divided into 8 groups (n=20), according to the bonding materials and adhesive: Groups 1 and 5 – Transbond XT; Groups 2 and 6 – Fill Magic; Groups 3 and 7 – Biofix; and, Groups 4 and 8 – Orthocem. One layer of adhesive 3 M Unitek (Group 1), and one layer of Single Bond Universal Adhesive (Groups 2, 3 and 4) were applied and light-cured with LED for 10 s. Brackets were bonded to the buccal surface with four bonding materials and light-cured with LED for 40 s. SBS was carried out after 24 h and thermocycling (7,000 cycles - 5°/55 °C). Data were submitted to two way ANOVA and Tukey’s post hoc test (α=0.05). The Adhesive Remaining Index (ARI) was evaluated at 8×. Results: The adhesive was effective in increasing the SBS for all bonding materials (p<0.05). Significant difference (p<0.05) on the SBS was observed between bonding materials with or without adhesive. The ARI showed a predominance of scores 0 for all groups. Conclusions: The adhesive improved significantly the SBS of the brackets to teeth. Different SBS values occurred among the bonding materials. ARI index showed predominance of score 0 for all groups.

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

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.

scholarly journals The Effect of Biodentine Maturation Time on Resin Bond Strength When Aged in Artificial Saliva

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Ruba M. Mustafa ◽  
Suhad J. Al-Nasrawi ◽  
Abtesam I. Aljdaimi
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Artificial Saliva ◽  
Adhesive System ◽  
Failure Patterns ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Post Hoc ◽  
Composite Restoration

Biodentine is a calcium silicate cement (CSC) that has been broadly applied in vital pulp therapy. The quality of the Biodentine-composite bond has a significant effect on the longevity of the definitive restoration. The aim of this study is to investigate the shear bond strength (SBS) between Biodentine and composite restoration at different maturation times of Biodentine aged in artificial saliva. Fifteen Biodentine discs were allocated into three groups (n = 5) based on the timeframe of performance of composite restoration: immediate (after 12  min), after 14 days, and after 28 days of Biodentine maturation. Total etch and rinse adhesive system and bulk-fill regular resin composite were used. The shear bond strength and the failure pattern were assessed. One-way ANOVA with the Bonferroni post hoc test was applied for statistical analysis at p < 0.05 . The highest (32.47 ± 8.18 MPa) and the lowest (4.08 ± 0.81 MPa) SBS values were recorded for 14 days and 12 min groups, respectively. Significant statistical differences were reported among the groups, and a high statistically significant difference was found between the immediate group and the other groups. Adhesive failure patterns were evident in all groups. More clinically acceptable bond strength between the Biodentine and overlaid composite restoration is at 14 days after Biodentine maturation. Delaying the coverage of Biodentine later than 14 days may significantly reduce the SBS. Using the artificial saliva as an aging medium may affect the SBS between Biodentine and composite material.

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