scholarly journals Cuspal movement related to different bonding techniques using etch-and-rinse and self-etch adhesive systems

2009 ◽  
Vol 03 (03) ◽  
pp. 213-218 ◽  
Author(s):  
Edson Alves Campos ◽  
Marcelo Ferrarezi Andrade ◽  
Sizenando Toledo Porto-Neto ◽  
Lucas Arrais Campos ◽  
José Roberto Cury Saad ◽  
...  
Keyword(s):  
Intermediate Layer ◽  
Class Ii ◽  
Adhesive Systems ◽  
Flowable Composite ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Before And After ◽  
The Difference ◽  
Post Hoc ◽  
Bonding Technique

ABSTRACTObjectives: To investigate the effects of adhesion technique using different contemporary adhesive systems on the cuspal movement in class II composite restorations in human premolar teeth.Methods: Human premolar teeth were prepared with class II cavities and then restored with composite and etch-and-rinse (Adper Scotchbond Multi Purpose and Adper Single Bond) or selfetch (Clearfil SE Bond and Clearfil S3 Bond) adhesive systems under different bonding techniques (total bonding and selective bonding). The influence of an intermediate layer of flowable composite was also evaluated. The cuspal distance was measured before and after the restorative procedure, and the difference was recorded as cuspal movement. The data were submitted to ANOVA test and Tukey’s post hoc comparison procedure test (alpha=0.05).Results: For all adhesive systems, the teeth restored with selective bonding technique showed lower values of cuspal movement and the use of an intermediary layer of flowable composite did not show any influence on the cuspal movement.Conclusions: Both the adhesive techniques tested were not able to prevent the cuspal movement. However, selectively bonded class II composite restorations demonstrated lower values of cuspal movement comparing with total bonding technique, and the use of an intermediate layer of flowable composite did not diminish the values of cuspal movement. (Eur J Dent 2009;3:213-218)

scholarly journals Solubility of Two Resin Composites in Different Mouthrinses

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Sezin Ozer ◽  
Emine Sen Tunc ◽  
Nuray Tuloglu ◽  
Sule Bayrak
Keyword(s):  
Composite Materials ◽  
Resin Composite ◽  
Artificial Saliva ◽  
Resin Composites ◽  
Constant Mass ◽  
Composite Restorations ◽  
Before And After ◽  
The Difference ◽  
Post Hoc

Aim. This study aimed to compare the solubility of a universal restorative resin composite (Filtek Z250; FZ250) and a silorane-based resin composite (Filtek Silorane; FS) after immersion in alcohol-containing mouthrinse, alcohol-free mouthrinse, and artificial saliva.Methods. 30 discs (10 mm × 1 mm) were prepared from each material and desiccated until a constant mass was obtained. Specimens were immersed in the test solutions for two days and desiccated again. Solubility was calculated based on the change in weight of each specimen before and after immersion. Data was analyzed using two-way ANOVA and Tukey’s Post Hoc testP<0.05.Results. Solubility values for both resin composites were the highest in the alcohol-containing mouthrinse. FZ250 showed greater solubility than FS; the difference was only significant in artificial saliva.Conclusion. Both resin-composite materials tested exhibited some degree of solubility in each of the test solutions. The use of an alcohol-free mouthrinse may be preferable for patients with extensive composite restorations.

scholarly journals In Vitro Comparison of Microleakage of Posterior Resin Composites With and Without Liner Using Two-Step Etch-and-Rinse and Self-etch Dentin Adhesive Systems

2011 ◽  
Vol 36 (2) ◽  
pp. 213-221 ◽  
Author(s):  
S Kasraei ◽  
M Azarsina ◽  
S Majidi
Keyword(s):  
Clinical Relevance ◽  
Class Ii ◽  
Resin Composites ◽  
Adhesive Systems ◽  
Sandwich Technique ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Self Etch ◽  
In Vitro Comparison

Clinical Relevance The use of resin-modified glass ionomers as cavity liners in the closed-sandwich technique reduced microleakage in Class II composite restorations.

Cervical Margin Integrity of Class II Resin Composite Restorations in Laser- and Bur-Prepared Cavities Using Three Different Adhesive Systems

2012 ◽  
Vol 37 (3) ◽  
pp. 316-323 ◽  
Author(s):  
PA Oskoee ◽  
S Kimyai ◽  
ME Ebrahimi ◽  
S Rikhtegaran ◽  
F Pournaghi-Azar
Keyword(s):  
Resin Composite ◽  
Class Ii ◽  
Marginal Adaptation ◽  
Single Bond ◽  
Gap Formation ◽  
Adhesive Systems ◽  
Tooth Structure ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Gap Width

SUMMARY One of the challenges in durability of posterior tooth-colored restorative materials is polymerization shrinkage, which results in gap formation between the restoration and tooth structure. The aim of the present study was to investigate marginal adaptation of Class II composite restorations using a self-etching and two etch-and-rinse adhesive systems in cavities prepared either with bur or Er,Cr:YSGG laser. A total of 45 extracted sound human premolars were selected. In each tooth, mesial and distal Class II cavities were prepared either by a diamond bur or by Er,Cr:YSGG laser with the margins 1 mm apical to the cemento-enamel junction. Then the teeth were randomly divided into three groups of 15 each, according to the type of the adhesive system used (Single Bond, Single Bond 2, and Adper Easy One adhesive systems). Subsequent to restoring the teeth, the specimens were subjected to thermal cycling between 5 ± 2°C and 55 ± 2°C for 500 cycles and were then cut longitudinally into two halves using a diamond disk. Marginal adaptation was evaluated using a stereomicroscope, and the values for gap widths were obtained in micrometers. Data were analyzed using two-factor analysis of variance and post hoc tests. There were statistically significant differences in mean marginal gap widths between the adhesive type and preparation groups (p&lt;0.05). The interfacial gap width in bur-prepared cavities was significantly less than that in laser-prepared cavities, and the lowest gap width was observed in Adper Easy One regardless of the type of the preparation.

scholarly journals Evaluation of Gingival Microleakage in Class II Composite Restorations with Different Lining Techniques: An In Vitro Study

Scientifica ◽  
2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Vedavathi Bore Gowda ◽  
B. V. Sreenivasa Murthy ◽  
Swaroop Hegde ◽  
Swapna Devarasanahalli Venkataramanaswamy ◽  
Veena Suresh Pai ◽  
...  
Keyword(s):  
Study Groups ◽  
Class Ii ◽  
Composite Liner ◽  
Flowable Composite ◽  
Composite Restorations ◽  
Group 4 ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Aim. To compare the microleakage in class II composite restorations without a liner/with resin modified glass ionomer and flowable composite liner.Method. Forty standardized MO cavities were prepared on human permanent mandibular molars extracted for periodontal reasons and then divided into 4 groups of ten specimens. The cavity preparations were etched, rinsed, blot dried, and light cured and Adper Single Bond 2 is applied. Group 1 is restored with Filtek P60 packable composite in 2 mm oblique increments. Group 2 is precure group where 1 mm Filtek Z350 flowable liner is applied and light cured for 20 sec. Group 3 is the same as Group 2, but the liner was cocured with packable composite. In Group 4, 1 mm RMGIC, Fuji Lining LC is applied and cured for 20 sec. All the teeth were restored as in Group 1. The specimens were coated with nail varnish leaving 1 mm around the restoration, subjected to thermocycling, basic fuchsin dye penetration, sectioned mesiodistally, and observed under a stereomicroscope.Results. The mean leakage scores of the individual study groups were Group 1 (33.40), Group 2 (7.85), Group 3 (16.40), and Group 4 (24.35). Group 1 without a liner showed maximum leakage. Flowable composite liner precured was the best.

Microleakage After Thermocycling of 4 Etch and Rinse and 3 Self-etch Adhesives With and Without a Flowable Composite Lining

10.2341/05-55 ◽  
2006 ◽  
Vol 31 (4) ◽  
pp. 450-455 ◽  
Author(s):  
A. M. Guéders ◽  
J. F. Charpentier ◽  
A. I. Albert ◽  
S. O. Geerts
Keyword(s):  
Clinical Relevance ◽  
Adhesive Systems ◽  
Flowable Composite ◽  
Etch And Rinse ◽  
Composite Lining ◽  
Self Etch

Clinical Relevance This study indicates that etch and rinse adhesive systems are less prone to microleakage than self-etch systems.

scholarly journals Effect of Proteolytic Agents on Microleakage of Etch and Rinse Adhesive Systems

2017 ◽  
Vol 16 ◽  
pp. 1-11
Author(s):  
Shahin Kasraei ◽  
Ebrahim Yarmohammadi ◽  
Maryam Farhadian ◽  
Mona Malek
Keyword(s):  
Phosphoric Acid ◽  
Nd:Yag Laser ◽  
Control Group ◽  
Single Bond ◽  
Adhesive Systems ◽  
Class V ◽  
Dentin Surface ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Significant Difference

Objective: this study aimed to assess the effect of treatment of phosphoric acid etched dentin surface with 5% bromelain enzyme and Nd:YAG laser prior to the use of etch and rinse adhesive systems on microleakage margins of class V composite restorations. Materials and Methods: sixty sound premolar teeth were selected. Standard class V cavities were prepared in the buccal and lingual surfaces of each teeth. Preparation in that way 1 mm of the cavity was above and 1 mm of it was below the cementoenamel junction. The teeth were then randomly divided into three groups including 20 teeth(40cavities  in each gorup). Two ethanol base etch and rinse system (Adper Single Bond and OptiBond Solo) was applied in each group. In the control group, cavities were etched with 37% phosphoric acid. Adper Single Bond was applied to 20 and OptiBond Solo was applied to the remaining 20 cavities and they were restored with Z250 composite (n=40). The same procedures were performed in bromelain and Nd:YAG laser groups with the difference that prior to the application of adhesive, aqueous 5% bromelain was applied in bromelain group while Nd:YAG laser was irradiated in laser group. All teeth were thermocycled and their apices were sealed with sticky wax. The tooth surfaces were coated with nail varnish except for 1 mm around the restoration margins, and the teeth were then immersed in fuchsine and sectioned by a diamond disc into mesial and distal halves. Marginal microleakage at both sides was determined and scored under a stereomicroscope at x40 magnification. Then data were analyzed using the Kruskal Wallis and Mann Whitney tests (α=0.05). Results: according the result of Mann Whitney test, Cervical margins showed significantly higher microleakage than the occlusal margins (P=0.000) but no significant difference was noted in microleakage of occlusal (P=0.362) or gingival (P=0.147) margins among the three groups by Kruskal Wallis test. Conclusion: in conclusion, application of proteolytic agents(5% bromelain solution and Nd:YAG laser)  on acid-etched dentin surface prior to the application of adhesive has no significant effect on marginal microleakage of class V composite restorations. 

scholarly journals The Effect of Flowable Composite Lining Thickness with Various Curing Techniques on Microleakage in Class II Composite Restorations: An in vitro Study

2013 ◽  
Vol 14 (1) ◽  
pp. 56-60 ◽  
Author(s):  
S Nagalaxmi Reddy ◽  
DN Jayashankar ◽  
Mohanthomas Nainan
Keyword(s):  
In Vitro Study ◽  
Class Ii ◽  
Group Iv ◽  
Group V ◽  
Group Iii ◽  
Flowable Composite ◽  
Composite Restorations ◽  
Group I ◽  
Composite Lining

ABSTRACT Aim Aim of this study was to compare class II composite restoration using flowable composites as lining with various thickness and curing techniques by evaluating cervical marginal microleakage. Materials and methods Fifty intact molars, each prepared with two box-only class II cavities, were randomly divided into five groups: Group I, P60 filling alone; group II, ultrathin flowable composite lining (0.5-1mm) cocured with overlying composite; group III, thin lining (1-1.5) cocured with overlying composite; group IV, ultrathin lining (0.5-1 mm) precured and group V, thin lining (1-1.5) precured. The teeth were then thermocycled for 1500 cycles (between 5 and 60 °C) and immersed in dye for 24 hours. Cervical microleakage was measured as the extent of dye penetration. Results Cocured specimens (groups II and III) showed least microleakage and control specimens (group I) showed maximum microleakage. On comparison of curing techniques, cocured specimens (groups II and III) showed less microleakage than precured (groups IV and V). On comparison of lining thickness and type of curing, group IV showed less microleakage than group V. Groups II and III were statistically not significant. Conclusion It was concluded from the results that ultrathin cocured flowable composite lining specimens improved the marginal sealing with decreased microleakage. Clinical significance In this study, the application of additional flowable composite lining with various thicknesses presented different influences in marginal quality of class II box only composite restorations. A new technique applying an ultrathin flowable composite lining with cocuring technique improved the marginal sealing with decreased microleakage. Restorations with thin lining presented reduced marginal integrity after thermocycling. How to cite this article Reddy SN, Jayashankar DN, Nainan M, Shivanna V. The Effect of Flowable Composite Lining Thickness with Various Curing Techniques on Microleakage in Class II Composite Restorations: An in vitro Study. J Contemp Dent Pract 2013;14(1):56-60.

scholarly journals Co-Blend Application Mode of Bulk Fill Composite Resin

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2504
Author(s):  
Mohammad Al-Nabulsi ◽  
Alaa Daud ◽  
Cynthia Yiu ◽  
Hanan Omar ◽  
Salvatore Sauro ◽  
...  
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Degree Of Conversion ◽  
Adhesive Systems ◽  
Bonding Agents ◽  
Force Microscopy ◽  
Flowable Composite ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Nanoindentation Hardness

Objective: To evaluate the effect of a new application method of bulk-fill flowable composite resin material on bond-strength, nanoleakage, and mechanical properties of dentine bonding agents. Materials and methods: Sound extracted human molars were randomly divided into: manufacturer’s instructions (MI), manual blend 2 mm (MB2), and manual blend 4 mm (MB4). Occlusal enamel was removed and flattened, dentin surfaces were bonded by Prime & Bond universal (Dentsply and Optibond FL, Kerr). For the MI group, adhesives were applied following the manufacturer’s instructions then light-cured. For MB groups, SDR flow+ bulk-fill flowable composite resin was applied in 2- or 4-mm increment then manually rubbed by a micro brush for 15 s with uncured dentine bonding agents and the mixture was light-cured. Composite buildup was fabricated incrementally using Ceram.X One, Dentsply nanohybrid composite resin restorative material. After 24-h water storage, the teeth were sectioned to obtain beams of about 0.8 mm2 for 24-h and thermocycled micro-tensile bond strength at 0.5 mm/min crosshead speed. Degree of conversion was evaluated with micro-Raman spectroscopy. Contraction gaps at 24 h after polymerization were evaluated and atomic force microscopy (AFM) nano-indentation processes were undertaken for measuring the hardness across the interface. Depth of resin penetration was studied using a scanning electron microscope (SEM). Bond strength data was expressed using two-way ANOVA followed by Tukey’s test. Nanoindentation hardness was separately analyzed using one-way ANOVA. Results: Factors “storage F = 6.3” and “application F = 30.11” significantly affected the bond strength to dentine. For Optibond FL, no significant difference in nanoleakage was found in MI/MB4 groups between baseline and aged specimens; significant difference in nanoleakage score was observed in MB2 groups. Confocal microscopy analysis showed MB2 Optibond FL and Prime & Bond universal specimens diffusing within the dentine. Contraction gap was significantly reduced in MB2 specimens in both adhesive systems. Degree of conversion (DC) of the MB2 specimens were numerically more compared to MS1 in both adhesive systems. Conclusion: Present study suggests that the new co-blend technique might have a positive effect on bond strengths of etch-and-rinse adhesives to dentine.

Marginal Adaptation of Direct Class II Composite Restorations with Different Cavity Liners

2013 ◽  
Vol 38 (6) ◽  
pp. E210-E220 ◽  
Author(s):  
R Pecie ◽  
I Onisor ◽  
I Krejci ◽  
T Bortolotto
Keyword(s):  
Elastic Modulus ◽  
Class Ii ◽  
Control Group ◽  
Shrinkage Stress ◽  
Marginal Adaptation ◽  
Composite Restorations ◽  
Significant Difference ◽  
Before And After ◽  
Group A ◽  
Group D

SUMMARY The aim of this study was to evaluate how cavity linings with different elastic modulus can influence the marginal adaptation (MA) of Class II composite restorations before and after thermo-mechanical loading. Materials and Methods: Forty Class II cavities with margins extending 1 mm below the cement-enamel junction were prepared in extracted human third molars. In each group except the control group, a lining material of 1-mm thickness was applied to the bottom of the cavity and polymerized before placing the resin composite Herculite XRV Ultra (group A: control; group B: Premise Flowable lining; group C: Herculite XRV Ultra lining; and group D: Optibond FL lining). MA was evaluated (with a scanning electron microscope) before and after loading (200,000 loading cycles). Statistical analysis was done using the Shapiro-Wilks test, the analysis of variance test, and Duncan post hoc test at p&lt;0.05. Results: Before loading, the percentages of continuous margins in dentin were superior (p&lt;0.05) for groups C and D (71.1% and 87.2%, respectively) compared to groups A and B (55.7% and 48.3%, respectively). After loading, group D (79.8%) was statistically superior in dentin compared to all of the other groups (43.6%, 35.9%, and 54.4%, respectively). In occlusal enamel, no significant difference was found between groups. The percentage of enamel fractures and the percentage of noncontinuous margins in proximal enamel were high, with no significant difference between liners. It can be concluded that for the materials used in this study, a 1-mm-thick lining with an extremely low elastic modulus (2-3 GPa) could redistribute shrinkage stress. The use of a flowable composite did not significantly improve MA.

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