scholarly journals SEM investigation of composite restoration adaptation to enamel after use of total etch and self etch adhesive system

2009 ◽  
Vol 137 (9-10) ◽  
pp. 475-481
Author(s):  
Stefan Dacic ◽  
Dragica Dacic-Simonovic ◽  
Slavoljub Zivkovic ◽  
Goran Radicevic ◽  
Aleksandar Mitic ◽  
...  
Keyword(s):  
Adhesive System ◽  
Composite Resins ◽  
The Self ◽  
Control Group ◽  
Single Bond ◽  
Adhesive Systems ◽  
Solution Methods ◽  
Self Etch ◽  
Scanning Electron ◽  
Composite Restoration

Introduction Quality and durability of enamel/composite interface essentially depend on an adhesive restorative system. Objective The aim of this study was to evaluate the quality of marginal adaptation of composite adhesive systems to enamel by scanning electron microscopy (SEM), and to analyze the morphology of the enamel surface along margins of composite restorations, following exposure to cariogenic solution. Methods The study material included 56 extracted human third molars. Class V cavities were prepared with margins at enamel. Cavities were restored with Single Bond/Z250 and Single Bond/Filtek flow, using the total etch adhesive system, and Prompt-L-Pop/Z250 and Prompt-L-Pop/Filtek flow, using the self etch adhesive system. After the restorative procedure, the restorations were submitted to demineralization during 7 and 28 days. Samples were stored in a cariogenic solution (lactic acid, pH 4.5; 0.1 M) at 37?C or in deionized water (the control group). The margins of restorations and perimarginal enamel were examined by scanning electron microscope (SEM). The gap formations around restoration were measured on cervical, occlusal and approximate margins. Results The usage of the total etch adhesive system showed statistically significant lower marginal gap width around composite restoration, compared with the self etch system (p<0.01). The SEM examination also showed perimarginal enamel zones presenting several signs of demineralization and erosion (alteration of rods, porosities) after acting of a cariogenic solution, in both adhesive methods. Less alteration was found on the enamel surfaces not included in the perimarginal zone. Conclusion Treating the cavity with 35% phosphoric acid in the total etch system significantly improved the adaptation of the composite resins to enamel, compared with the self etch treatment. Stronger demineralization of the perimarginal enamel in a cariogenic solution was observed around all restorations in both adhesive systems.

scholarly journals Degree of Conversion, Translucency and Intrinsic Color Stability of Composites During Surface Modeling With Lubricants

2018 ◽  
Vol 17 ◽  
pp. 1-11
Author(s):  
Ana Margarida dos Santos Melo ◽  
Thiago Jonathan Silva dos Santos ◽  
Matheus Dantas Tertulino ◽  
Maria Cristina dos Santos Medeiros ◽  
Ademir Oliveira da Silva ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Color Stability ◽  
Adhesive System ◽  
Composite Resins ◽  
Degree Of Conversion ◽  
Control Group ◽  
Single Bond ◽  
Adhesive Systems ◽  
Composite Surface ◽  
Tukey Test

The tackiness presented by resins brings inconveniences to the incremental technique, which can be improved by using lubricants in handling. Aim: To evaluate the influence of two adhesive systems as brush lubricants on the degree of conversion, translucency and intrinsic color stability of composite resins. Methods: Samples (n=10) were fabricated according to the composites (Filtek Z350 XT, IPS Empress Direct, and Esthet X HD), shades (bleach shade and A2), and lubricants used (Adper Single Bond 2, Scotchbond Multi-Purpose bonding agent, and no lubricant). Single composite increments were inserted into a Teflon mold. The composite surface was then modeled using a brush dipped in an adhesive system. The control group was fabricated with no additional modeling. The surface degree of conversion (DC) was measured using Fourier transform infrared spectroscopy; translucency and intrinsic color stability were accessed using a spectrophotometer. Data were analyzed using three-way ANOVA and the Tukey test (p<0.05). Results: Scotchbond Multi-Purpose decreased the DC of all composites and shades in comparison with the control group (p<0.05), although it did not decrease color stability (p<0.05). The bleach shade of IPS Empress Direct and Esthet X HD showed higher translucency than the A2 shade when lubricated with the adhesive systems (p<0.05). Conclusion: Therefore, the two tested adhesive systems used as brush lubricants on composites promoted changes to the surface degree of conversion and aesthetic properties.

scholarly journals Bond strength to dentin of total-etch and self-etch adhesive systems

2014 ◽  
Vol 62 (4) ◽  
pp. 365-370 ◽  
Author(s):  
Ricardo Alves dos SANTOS ◽  
Eliane Alves de LIMA ◽  
Mônica Maria de Albuquerque PONTES ◽  
Alexandre Batista Lopes do NASCIMENTO ◽  
Marcos Antônio Japiassú Resende MONTES ◽  
...  
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Adhesive System ◽  
Single Bond ◽  
Adhesive Systems ◽  
Healthy Human ◽  
Universal Testing ◽  
Stereo Microscope ◽  
Diamond Disc ◽  
Self Etch

OBJECTIVE: To assess the bond strength to dentin of the Single Bond (3M ESPE) and XP Bond (Dentsply) total-etch and Adper SE Plus (3M ESPE) self-etch adhesive systems. METHODS: Fifteen healthy human third molars were randomly allocated across three different groups of five teeth each according to the adhesive system. The occlusal portion of each tooth was removed under refrigeration using a flexible diamond disc (EXTEC, Enfield, CT, USA) down to an area of dentin that did not reveal enamel, as confirmed under a 40X stereo microscope (Ramsor, São Paulo, Brazil). A standardized smear layer was created with #600 grit silicon-carbide paper. The adhesive systems were applied as per manufacturer recommendations, with the exception of the Adper SE Plus system, which was triple-polymerized. Composite resin blocks (5 mm) were placed on the dentin surface. The specimens were stored in distilled water for 24 hours at 37ºC. Using a flexible diamond disc (EXTEC, Enfield, CT, USA), toothpick-like specimens with an adhesive area of less than 1 mm² were obtained. A microtensile bond test was then carried out using a universal testing machine (KRATOS) with a crosshead speed of 0.5 mm/min. Analysis of variance (ANOVA) and Tukey's test were used for comparisons. RESULTS: The bond strength values obtained with each adhesive system were as follows: XP Bond, 96.24 MPa; Adper Single Bond, 72.39 MPa; Adper SE Plus, 49.91 MPa. CONCLUSION: In terms of bond strength to dentin, conventional adhesives outperform self-etching systems.

scholarly journals The Impact of Expasyl® Gingival Retraction Paste on the Bond Strength of Self-etch and Total-etch Systems

2015 ◽  
Vol 16 (5) ◽  
pp. 335-339 ◽  
Author(s):  
Zeeshan H Ahmad ◽  
Sukumaran Anil ◽  
Alaa El Araby ◽  
Mohammad D Al Amri
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Adhesive System ◽  
The Self ◽  
Adhesive Systems ◽  
Lower Performance ◽  
The Impact ◽  
Self Etch

ABSTRACT Objective To evaluate the influence of Expasyl® gingival retraction paste on the shear bond strength of self-etch and total-etch adhesive systems. Materials and methods Twenty-four specimens of extracted, caries-free, sound human molars were used in this study. The molars were then cut vertically into halves through the buccal and lingual cusps. Forty-eight specimens were divided into four groups (total-etch, total-etch with Expasyl application, self-etch, self-etch with Expasyl application) and the shear bond strength was tested. Results Expasyl significantly reduced the shear bond strength of the self-etch and total-etch adhesive systems. The self-etch system showed relatively lower performance compared with the total-etch adhesive system. The shear bond strength values of the total-etch adhesive without Expasyl showed the highest bond strength (21.48 ± 2.89), while the self-etching group adhesive treated with Expasyl showed the lowest shear bond strength value (14.89 ± 1.81). Conclusion From the observations of this in vitro study, it can be concluded that the use of Expasyl® gingival retraction system can negatively affect bond strength of adhesives. The total-etch system showed better compatibility to the Expasyl gingival retraction system than the self-etch. How to cite this article Al Baker AMA, El Araby A, Al Amri MD, Sukumaran A. The Impact of Expasyl® Gingival Retraction Paste on the Bond Strength of Self-etch and Total-etch Systems. J Contemp Dent Pract 2015;16(5):335-339.

Nanoleakage in Hybrid Layer and Acid–Base Resistant Zone at the Adhesive/Dentin Interface

2015 ◽  
Vol 21 (5) ◽  
pp. 1271-1277 ◽  
Author(s):  
Toru Nikaido ◽  
Hamid Nurrohman ◽  
Tomohiro Takagaki ◽  
Alireza Sadr ◽  
Shizuko Ichinose ◽  
...  
Keyword(s):  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Adhesive System ◽  
Control Group ◽  
Fluorescent Light ◽  
Adhesive Systems ◽  
Acid Base ◽  
Hybrid Layer ◽  
Transmission Electron ◽  
Self Etch

AbstractThe aim of interfacial nanoleakage evaluation is to gain a better understanding of degradation of the adhesive–dentin interface. The acid–base resistant zone (ABRZ) is recognized at the bonded interface under the hybrid layer (HL) in self-etch adhesive systems after an acid–base challenge. The purpose of this study was to evaluate nanoleakage in HL and ABRZ using three self-etch adhesives; Clearfil SE Bond (SEB), Clearfil SE One (SEO), and G-Bond Plus (GBP). One of the three adhesives was applied on the ground dentin surface and light cured. The specimens were longitudinally divided into two halves. One half remained as the control group. The others were immersed in ammoniacal silver nitrate solution, followed by photo developing solution under fluorescent light. Following this, the specimens were subjected to acid–base challenges with an artificial demineralization solution (pH4.5) and sodium hypochlorite, and prepared in accordance with common procedures for transmission electron microscopy (TEM) examination. The TEM images revealed silver depositions in HL and ABRZ due to nanoleakage in all the adhesives; however, the extent of nanoleakage was material dependent. Funnel-shaped erosion beneath the ABRZ was observed only in the all-in-one adhesive systems; SEO and GBP, but not in the two-step self-etch adhesive system; SEB.

scholarly journals Randomized Clinical Trial of Composite Restorations in Primary Teeth: Effect of Adhesive System after Three Years

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Secil Bektaş Donmez ◽  
Melek D. Turgut ◽  
Serdar Uysal ◽  
Pinar Ozdemir ◽  
Meryem Tekcicek ◽  
...  
Keyword(s):  
Primary Teeth ◽  
Clinical Performance ◽  
Adhesive System ◽  
The Self ◽  
Marginal Adaptation ◽  
Adhesive Systems ◽  
Composite Restorations ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Self Etch

The purpose of this study was to assess the clinical performance of composite restorations placed with different adhesive systems in primary teeth. In 32 patients, 128 composite restorations were placed using a split-mouth design as follows (4 groups/patient): three-step etch-and-rinse (Group 1), two-step etch-and-rinse (Group 2), two-step self-etch (Group 3), and one-step self-etch (Group 4). The restorations were clinically evaluated at baseline and at 6, 18, and 36 months according to the FDI criteria. There was no significant difference between the adhesive systems in retention of the restorations (p>0.05). Over time, there was a statistically significant decrease in marginal adaptation in all groups, whereas surface and marginal staining significantly increased in Groups 3 and 4 (p<0.05). The etch-and-rinse adhesive systems resulted in better marginal adaptation than the self-etch adhesive systems (p<0.05). It was concluded that preetching of the primary enamel might help improve the clinical performance of the self-etch adhesive systems in primary teeth.

scholarly journals Microleakage Evaluation of Nano Ceramics and Nano Composite Resins Using Self Etch Adhesive in Class V Cavities Using Single Increment Technique

2013 ◽  
Vol 01 (02) ◽  
pp. 106-111 ◽  
Author(s):  
S. Vijay Singh ◽  
Saurabh Gupta ◽  
Pragya Jain ◽  
Vaibhav Munjal
Keyword(s):  
Composite Resins ◽  
Restorative Material ◽  
Application Time ◽  
Adhesive Systems ◽  
Class V ◽  
Nano Composite ◽  
Self Etch ◽  
Composite Restoration

AbstractMicro leakage plays an important role in the success of composite restoration, this have led to researcher to find newer composite restorative material with present study it was observed that Self-etch adhesive systems and single increment technique are advantageous in that it reduces the application time and technique related sensitivity.

Effect of Bur Roughness on Bond to Sclerotic Dentin With Self-etch Adhesive Systems

2013 ◽  
Vol 38 (1) ◽  
pp. 39-47 ◽  
Author(s):  
IV Luque-Martinez ◽  
A Mena-Serrano ◽  
MA Muñoz ◽  
V Hass ◽  
A Reis ◽  
...  
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Relative Number ◽  
Control Group ◽  
Adhesive Systems ◽  
Tukey Test ◽  
Tensile Forces ◽  
Adhesive Application ◽  
Self Etch ◽  
Scanning Electron

ABSTRACT Purpose: To evaluate the effect of bur roughness on bond strength values and conditioner pattern of two-step self-etch adhesives applied on sclerotic dentin. Methods: The roots of 48 bovine incisors were removed and the crowns were divided into four groups: the control group (CO) teeth were left untreated or the teeth were slightly roughened with coarse-, medium-, or fine-grit diamond burs. Next, the teeth were subdivided and Clearfil SE Bond (CSE) and Adper SE Bond (ASE) were applied according to the manufacturers' instructions. Composite resin (Opallis) buildups were incrementally constructed on the bonded surfaces. After storage for 24 hours in distilled water at 37°C, the teeth were sectioned into sticks (area of 0.8 mm2). The sticks were stressed until failure by tensile forces (0.5 mm/min). Additionally, eight bovine teeth were treated as previously described, and after adhesive application, the surface was rinsed off and examined by scanning electron microscopy to measure the relative number of open tubules (OT). Data (MPa) were analyzed by two-way analysis of variance and Tukey test (p=0.05). Results: CO showed the highest bond strength values (p&lt;0.05). As regards OT, the lowest mean was observed for CO (p&lt;0.05) and the highest was found after application of CSE or ASE (p&lt;0.05).

scholarly journals Interaction between photoactivators and adhesive systems used as modeling liquid on the degree of conversion of a composite for bleached teeth

2018 ◽  
Vol 21 (3) ◽  
pp. 270
Author(s):  
Thiago Jonathan Silva Dos Santos ◽  
Ana Margarida Dos Santos Melo ◽  
Matheus Dantas Tertulino ◽  
Boniek Castillo Dutra Borges ◽  
Ademir Oliveira Da Silva ◽  
...  
Keyword(s):  
Composite Resin ◽  
Composite Resins ◽  
Degree Of Conversion ◽  
Control Group ◽  
Single Bond ◽  
Adhesive Systems ◽  
Bonding Agents ◽  
Composite Surface ◽  
Light Emitting ◽  
Made In

<p><strong>Objective: </strong>This study analyzed the effect of two light emitting diodes (LEDs) on the degree of conversion (DC) of a composite resin for bleached teeth under the influence of adhesives systems used as modeling liquid. <strong>Material and methods: </strong>A total of 60 samples of IPS Empress Direct resin (Ivoclar, Vivadent) in BL-L shade were made in a single increment and polymerized for 20 seconds. The treatments were: 1) Type of adhesive used as modeling liquid (Adper Single Bond 2; the bond component of Adper Scotchbond Multi-Purpose; or no adhesive systems used as modeling liquid were used in the control group); and 2) Type of LED (Bluephase, polywave; and Coltolux, monowave). The DC, percentage of monomers converted to polymer during polymerization, was were evaluated using Fourier Transform Infrared Spectroscopy (FTIR) with 10 scans and wavenumber related to 1/λ for observation of the peaks at 1608 and 1638 cm<sup>-1</sup>. Data were statistically analyzed by two-way analysis of variance (ANOVA) with Tukey's test (<em>p</em>&lt; 0.05). <strong>Results:</strong> There was no statistical difference between LEDs in comparison to the treatments (<em>p</em>&gt; 0.05). However, there was a statistically significant increase in the DC for the adhesive systems tested in comparison to the control group (<em>p</em>&lt; 0.05), with the highest values for Single Bond 2. <strong>Conclusion:</strong> It is concluded that the use of adhesives as modeling liquid of Empress Direct resin for bleached teeth shade increases the degree of conversion of the composite surface, and that curing with both kinds of LEDs does not interfere in this property.</p><p><strong> </strong></p><p><strong>Keywords</strong></p><p><strong></strong>Composite resins; Dentin-bonding agents; Surface properties.</p>

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.

scholarly journals Evaluation of bond strength of self-adhesive resin composite repairs

2021 ◽  
Vol 69 ◽  
Author(s):  
João Victor Gonçalves da SILVA ◽  
Jonathas José de PAULO ◽  
Rodolfo Scavuzzi Carneiro da CUNHA ◽  
Rodivan BRAZ ◽  
Márcia de Almeida DURÃO
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Resin Composite ◽  
Adhesive System ◽  
Composite Resins ◽  
The Self ◽  
Prior Treatment ◽  
Single Bond ◽  
Universal Adhesive ◽  
Vertise Flow

ABSTRACT Objective: To evaluate the bond strength of repairs with the self-adhering flowable composite Vertise Flow (Kerr) and a conventional composite resin Filtek Z350 (3M ESPE) subjected to different surface treatments. Methods: Forty specimens were divided into four groups: ZV (Filtek Z350 + Vertise Flow, without prior treatment); ZAV (Z350 + Vertise Flow with prior treatment with Single Bond Universal Adhesive System (3M ESPE)); ZAZ (Filtek Z350 + Filtek Z350 with prior treatment with Single Bond Universal Adhesive System (3M ESPE)); VV (Vertise Flow + Vertise Flow, without prior treatment). After 15 days of storage, the specimens were subjected to microtensile tests (Kratos IKCL3-USB, SP, Brazil), with speed of 0.5 mm/min and 20kg load. For statistical analysis, ANOVA with Tukey tests were used (p < 5%). Results: The mean values of the bond strength were highest respectively in the groups: ZV (36.07 ± 37.63); ZAZ (24.04 ± 28.51); VV (19.39 ± 28.24) and ZAV (16.06 ± 15.66). The bond strength of the repairs between the groups presented satisfactory results. Conclusion: The self-adhesive composite resin Vertise Flow seems to be a viable and fast alternative for composite resins repairs.

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