EVALUATION OF MICRO LEAKAGE IN COMPOSITES WITH NEWER DENTIN BONDING SYSTEMS BY DIRECT TECHNIQUE IN CLASS V CAVITIES: AN IN-VITRO FLUORESCENT DYE PENETRATION STUDY

ABSTRACT Objective: The aim of this in vitro study was to evaluate the marginal sealing ability of a bulk fill flowable resin composite on both enamel and dentin substrates. Materials and Methods: 48 non-carious molars were selected and four Class-V cavities were prepared at the CEJ of each sample. Cavities were filled with Venus Diamond (Heraeus Kulzer); Venus Diamond Flow (Heraeus Kulzer) and Surefil SDR (Dentsply). Samples were divided into two groups: First group samples were immersed in a methylene blue solution for 30 min at 25°C. Second group samples were artificially aged and then treated with methylene blue. Samples were sectioned in the center of the restoration and observed with a 40x stereomicroscope, and the percentage of cavity infiltration was calculated. Results: Results were analyzed statistically by ANOVA (P < 0.05). The amount of infiltration was significantly lower for the enamel substrate compared with dentin (P = 0.0001) and in samples immediately immersed in methylene blue compared with those that were artificially aged (P = 0.011). The interaction between the composite material and the marginal substrate significantly affected dye penetration (P = 0.006). Conclusions: Bulk fill flowable resins provided significantly better marginal seal in dentin, both before and after artificial ageing. Nanohybrid resin composites and bulk fill flowable resins showed similar microleakage values at enamel margins. Bulk fills flowable resins provided significantly better marginal seal in dentin, both before and after artificial ageing. Nanohybrid resin composites and bulk fill flowable resins showed similar microleakage values at enamel margins.

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Factors affecting the in vitro performance of dentin-bonding systems

Japanese Dental Science Review ◽

10.1016/j.jdsr.2011.11.002 ◽

2012 ◽

Vol 48 (1) ◽

pp. 53-60 ◽

Cited By ~ 12

Author(s):

Masashi Miyazaki ◽

Keishi Tsubota ◽

Toshiki Takamizawa ◽

Hiroyasu Kurokawa ◽

Akitomo Rikuta ◽

...

Keyword(s):

Factors Affecting ◽

Dentin Bonding ◽

Bonding Systems ◽

In Vitro Performance

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Comparative evaluation of microleakage of nano-filled resin-modified glass ionomer: An in vitro study

European Journal of Dentistry ◽

10.4103/1305-7456.143615 ◽

2014 ◽

Vol 08 (04) ◽

pp. 450-455 ◽

Cited By ~ 2

Author(s):

Nesrin Eronat ◽

Emir Yilmaz ◽

Nazan Kara ◽

Asli Topaloglu Ak

Keyword(s):

Third Molar ◽

In Vitro Study ◽

High Viscosity ◽

Vitro Study ◽

Glass Ionomer ◽

Class V ◽

Dye Penetration ◽

Resin Modified Glass Ionomer ◽

Group B

ABSTRACT Objective: This in vitro study evaluated the microleakage of a nano-filled resin-modified glass ionomer and a high viscosity glass-ionomer restorations in class V cavities. Materials and Methods: Thirty-two class V cavities prepared on the buccal and lingual surfaces of 16 sound, third molar teeth were randomly assigned into two groups and restored by one of the glass ionomer material; Group A: A high viscosity (Ketac Molar, 3M ESPE) Group B: A nano-filled resin-modified (Ketac N100, 3M ESPE) glass ionomer. One clinician prepared all the cavities. The materials were used according to the manufacturers’ recommendations. The restored teeth were then stored in distilled water at 37°C for 24 h, thermocycled at 5-55°C for 1000 cycles. The specimens were immersed in aqueous solution of Indian ink dye for 48 h at room temperature. They were embedded in resin polyester and sectioned longitudinally in a buccolingual direction. Microleakage was assessed according to the depth of dye penetration along the restoration. The extent of dye penetration at the occlusal and gingival margins was assessed using a stereo microscope. Randomly selected samples from each group were prepared for scanning electron microscope evaluation. The data were statistically analyzed with Friedman and Wilcoxon signed ranks tests. Results: There were statistically significant differences between the microleakage scores of the two groups for both occlusal and gingival scores (P = 0.001). Occlusal and gingival scores for high viscosity glass ionomer (P = 0.024) and nanoionomer (P = 0.021) using Wilcoxon signed ranks tests showed statistically significant differences. High viscosity glass ionomer showed significantly less microleakage compared to the nano-filled resin-modified glass-ionomer (RMGIs) at occlusal margin (P = 0.001). No significant differences were found between the groups at gingival margin (P = 0.0317). Conclusion: Within the limitations of this in vitro study, nano-filled RMGIs restorations did not perform better than high viscosity glass ionomer in class V cavities in terms of microleakage assessment.

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In vitro Bond Strengths and SEM Evaluation of Dentin Bonding Systems to Different Dentin Substrates

Journal of Dental Research ◽

10.1177/00220345940730010601 ◽

1994 ◽

Vol 73 (1) ◽

pp. 44-55 ◽

Cited By ~ 77

Author(s):

J. Perdigao ◽

E.J. Swift ◽

G.E. Denehy ◽

J.S. Wefel ◽

K.J. Donly

Keyword(s):

Dentin Bonding ◽

Bond Strengths ◽

Bonding Systems

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OR 48 In vitro evaluation of the cytoxicity of dentin bonding systems and synthetic collagen matrices

Journal of Endodontics ◽

10.1016/s0099-2399(99)80208-8 ◽

1999 ◽

Vol 25 (4) ◽

pp. 294

Author(s):

R.S. Wright ◽

N.J. McDonald ◽

T.F. Meiller

Keyword(s):

Collagen Matrices ◽

In Vitro Evaluation ◽

Dentin Bonding ◽

Bonding Systems

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Impact of monomer functional groups of resin-based materials on the interaction with water

Brazilian Dental Science ◽

10.14295/bds.2015.v18i2.1096 ◽

2015 ◽

Vol 18 (2) ◽

pp. 58

Author(s):

Karin Cristina Modena ◽

Vanessa Pavoni Cannabrava ◽

Jaine Zanolla ◽

Carlos Ferreira Santos ◽

Maria Fidela Lima Navarro ◽

...

Keyword(s):

Functional Groups ◽

Water Solubility ◽

Adhesive System ◽

Composite Resins ◽

Constant Mass ◽

Dentin Bonding ◽

Bonding Systems ◽

Post Hoc ◽

One Way Anova

Objective: The objective of this in vitro study was to compare dentin bonding systems and composite resins based on their functional groups in terms of water sorption (WS) and water solubility (WSB). Material and Methods: Three dentin bonding systems (Adper Single Bond 2 – 3M ESPE, Clearfil SE Bond – Kuraray, P90 Adhesive System – 3M ESPE) and three commercial composite resins (Filtek Z350 – 3M ESPE, Filtek Z250 – 3M ESPE, Filtek P90 – 3M ESPE) were tested. Eight specimens of each material were prepared to evaluate the WS and WSA. The discs were individually stored in a desiccator until constant mass was achieved. Specimens were then individually stored in distilled water until the mass was stabilized again. Finally, the specimens were dried again in the desiccator until constant mass was obtained. WS and WSA were calculated from these measurements. Data were analyzed by one-way ANOVA and Tukey post hoc test (p < 0.05). Results: Filtek Silorane-Bond presented the lowest values of WS, and Clearfil SE Bond presented the lowest WSB. Filtek Silorane resin showed the lowest WS and WSA results. Conclusion: Based on the results, it can be concluded that the WS and WSB were influenced by the composition of the materials. The main functional group of the materials determines their susceptibility to water and influences their performance.

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Evaluation of Caries-Free Restorations Bonded with Various Adhesive Systems: In Vitro Study

International Journal of Dentistry ◽

10.1155/2020/5859835 ◽

2020 ◽

Vol 2020 ◽

pp. 1-7

Author(s):

Morakot Piemjai ◽

Pareewan Chantarawej ◽

Nobuo Nakabayashi

Keyword(s):

Resin Composite ◽

Artificial Saliva ◽

In Vitro Study ◽

Negative Control ◽

Adhesive Systems ◽

Hybrid Layer ◽

Class V ◽

Secondary Caries ◽

Dye Penetration

Purpose. Secondary caries originate from a leakage pathway where oral acids can penetrate faster and demineralize the tooth substrate deeper which can be visualized by dye penetration. The ability to prevent secondary caries by contemporary adhesive systems was evaluated in this study. Dye penetration distance through leakage and into the tooth substrate adjacent to Class V restorations after artificial caries exposure was compared. Materials and Methods. Previously frozen extracted human molars were used to prepare the Class V cavities at the CEJ on axial surfaces. All cavities were restored with either the resin-composite or amalgam with or without resin adhesives: dry bonding: Super-Bond D-Liner II Plus; moist bonding: All-Bond 2; and self-etch bonding: AQ Bond and Clearfil Protect Bond. Two subgroups of Super-Bond D-Liner II Plus were immersed for 14 days at 37°C either in artificial saliva (negative control) or the artificial caries solution. The other groups were soaked in the artificial caries solution. The distance of dye penetration into the adjacent enamel, cementum/dentin, and tooth-resin interfaces was measured after immersion in 0.5% basic fuchsin dye for 24 h. The tooth-resin interfacial layer was investigated using SEM. Results. No dye penetration into the tooth-resin interface was found in Super-Bond D-Liner II Plus and AQ Bond groups which demonstrated a constant hybrid layer after a chemical challenge. The leakage distance at the cementum/dentin-resin interface of All-Bond 2, Clearfil Protect Bond, and non-adhesive amalgam (positive control) groups was significantly higher than the distance of dye penetration into the adjacent demineralized root surface (p<0.05). Conclusion. Caries associated with either amalgam or resin-composite restorations can be prevented using resin adhesives which can penetrate into the intact tooth substrate to form a stable hybrid layer. With caries-free restorations, tooth vitality may be conserved lifelong.

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Evaluation of the Sealing Ability of Direct versus Direct-Indirect Veneer Techniques: An In Vitro Study

BioMed Research International ◽

10.1155/2021/1118728 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Mewan Salahalddin Abdulrahman

Keyword(s):

Composite Resin ◽

In Vitro Study ◽

Human Teeth ◽

Gingival Margin ◽

Dye Penetration ◽

Sealing Ability ◽

Direct Technique ◽

Nanohybrid Composite ◽

The Difference

Backgrounds. Marginal discoloration, microleakage, wear, and marginal fractures are all prevalent problems with composite veneers, and this scenario leads the esthetic outcome to deteriorate with time, resulting in patient discontent. Aim of the Study. The study’s goal was to determine the marginal sealing ability of composite laminate veneers when employing two types of veneer techniques: direct and direct-indirect veneers, as well as two types of composite resin: nanohybrid and microfilled composite resin restorations, using dye penetration method. Materials and Methods. In this study, forty extracted human teeth were utilized. Following a standardized veneer preparation on the labial surface of the teeth, they were separated into two groups of 20 teeth each, using the following composite application techniques: group A: direct veneers and group B: direct-indirect veneers. Following that, each major group was separated into two subgroups of ten teeth each, based on the type of composite employed: subgroup 1 used nanohybrid composite resin, while subgroup 2 used microfilled composite resin. All of the samples were kept in distilled water, thermocycled, and soaked in 2% basic fuchsine dye. These specimens were sectioned and examined under a stereomicroscope for dye penetration at the gingival margin. The data was analyzed using independent T -tests using SPSS 22. Result. Using direct-indirect veneer technique with nanohybrid composite resin material resulted in the most negligible dye penetration at the gingival margin, while using direct veneer technique with microfilled composite resin material resulted in the maximum dye penetration. For both composite materials, gingival microleakage was lower when using the direct-indirect veneer technique than when using the direct technique, and the difference was statistically significant ( P < 0.05 ). In both techniques, gingival microleakage was lower with nanohybrid composite than with microfilled composite, and the difference was statistically highly significant ( P = 0.001 ). Conclusion. The sealing ability of the gingival margin of tooth/composite interface is better when applying direct-indirect veneer technique with nanohybrid composite resin than that of direct veneer technique with microfilled composite resin material.

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