scholarly journals Effect of different concentrations of green tea extract solutions on bonding durability of etch-and-rinse adhesive system to caries affected dentin

2021 ◽  
Vol 20 ◽  
pp. e210328
Author(s):  
Ricky Rolim de Moura ◽  
Fabiana Mantovani Gomes França ◽  
Cecilia Pedroso Turssi ◽  
Roberta Tarkany Basting ◽  
Flavia Lucisano Botelho do Amaral
Keyword(s):  
Bond Strength ◽  
Green Tea ◽  
In Vitro Study ◽  
Adhesive System ◽  
Green Tea Extract ◽  
Etch And Rinse ◽  
Bonding Durability ◽  
Composite Resin Restorations ◽  
Tea Extract

Aim: The in vitro study evaluated the effect of different concentrations of green tea extract solution (GT) on the bonding durability of etch-and-rinse adhesive system to caries dentin affected (CAD). Methods: Dentinal surfaces of human third molars were polished and submitted to a microbiological caries induction protocol for 14 days. After removal of the infected dentin layer, the samples were randomly divided into 4 groups (n= 10), according to the concentration of GT solution applied in CAD, after acid etching: 0.05%; 0.2%; 2% and NT (no treatment – control). After application of a etch-and-rinse adhesive system (Adper Single Bond 2, 3M ESPE), composite resin restorations were performed on the dentin. After 24 hours, the resin-dentin blocks were sectioned 1mm2 specimens, which were subjected to the microtensile test immediately or after 6 months of storage in water. Data were submitted to two-way ANOVA for randomized blocks and Tukey test (α= 5%). Results: There was no effect of double interaction (p= 0.934). The application of 0.2% GT promoted a statistically significant increase in dentin bond strength values in comparison to the condition where GT was not used (p=0.012). There was a significant decrease of bond strength after 6 months of storage, regardless of dentin pretreatment (p = 0.007). The G test identified that there was no statistical difference regarding failure mode (p= 0.326). Conclusion: The concentration of 0.2% improved the bond strength of an etch-and-rinse adhesive system to caries affected dentin, however, none of dentin pretreatments could prevent the decrease in bond strength over time.

scholarly journals Effect of green tea extract on bonding durability of an etch-and-rinse adhesive system to caries-affected dentin

2016 ◽  
Vol 24 (3) ◽  
pp. 211-217 ◽  
Author(s):  
Carolina CARVALHO ◽  
Fernando Pelegrim FERNANDES ◽  
Valeria da Penha FREITAS ◽  
Fabiana Mantovani Gomes FRANÇA ◽  
Roberta Tarkany BASTING ◽  
...  
Keyword(s):  
Green Tea ◽  
Adhesive System ◽  
Green Tea Extract ◽  
Etch And Rinse ◽  
Bonding Durability ◽  
Tea Extract

scholarly journals Comparison of Inhibitory Effect of Green Tea Extract and Nystatin on Candida Albicans Growth: An in-vitro Study

2020 ◽  
Vol 17 (4) ◽  
pp. 287-295
Author(s):  
lida samie ◽  
zeynab bayat ◽  
dara dastan ◽  
mohammad yusef alikhani ◽  
jalal poorolajal ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Green Tea ◽  
In Vitro Study ◽  
Inhibitory Effect ◽  
Green Tea Extract ◽  
Vitro Study ◽  
Tea Extract

scholarly journals Effect of Two Microshear Test Devices on Bond Strength and Fracture Pattern in Primary Teeth

2013 ◽  
Vol 24 (6) ◽  
pp. 605-609 ◽  
Author(s):  
Tamara Kerber Tedesco ◽  
Eugenio Jose Garcia ◽  
Fabio Zovico Maxnuck Soares ◽  
Rachel de Oliveira Rocha ◽  
Rosa Helena Miranda Grande
Keyword(s):  
Bond Strength ◽  
Failure Mode ◽  
Failure Modes ◽  
In Vitro Study ◽  
Adhesive System ◽  
Fracture Pattern ◽  
Chi Square ◽  
Etch And Rinse ◽  
Chi Square Test

This in vitro study evaluated the influence of two devices for application of shear load in microshear tests on bond strength and fracture pattern of primary enamel and dentin. Eighty primary molars were selected and flat enamel (40 teeth sectioned mesio-distally) and dentin (40 teeth sectioned transversally) surfaces were obtained. Both surfaces were polished to standardize the smear layer. Two-step etch-and-rinse adhesive systems (Adper Single Bond and XP Bond) were used. Polyethylene tubes was placed over the bonded surfaces and filled with composite resin. The microshear testing was performed after storage in water (24 h/37 °C) using two devices for application of microshear loads: a notched rod (Bisco Shear Bond Tester) or a knife edge (Kratos Industrial Equipment). Failure modes were evaluated using a stereomicroscope. Bond strength data were subjected to ANOVA and chi-square test to compare the failure mode distributions (α=0.05). No significant differences were observed between the groups for dentin and enamel bond strength or fracture patterns (p>0.05). The predominant failure mode was adhesive/mixed. In conclusion, the devices for application of shear loads did not influence the bond strength values, regardless of adhesive system and substrate.

Evaluation of the Bond Strength of Different Pulp Capping Materials to Dental Adhesive Systems: An In Vitro Study

2021 ◽  
pp. 232020682199798
Author(s):  
Sema Yazici Akbiyik ◽  
Elif Pınar Bakir ◽  
S¸eyhmus Bakir
Keyword(s):  
Bond Strength ◽  
In Vitro Study ◽  
Adhesive System ◽  
Adhesive Systems ◽  
Pulp Capping ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Fracture Types ◽  
Self Etch

Aim: To evaluate the bond strengths of pulp capping materials (Dycal, ProRoot MTA, Biodentine, TheraCal LC, Calcimol LC, and ApaCal ART) and different adhesive systems (Gluma 2 Bond, Clearfil SE Protect, Gluma Self Etch, Clearfil S 3 Bond Plus, Gluma Bond Universal, Clearfil S 3 Bond Universal). Materials and Methods: Two hundred fifty-two acrylic blocks were prepared in which cylindrical cavities of 4 × 2 mm 3 were formed. Pulp capping materials were placed in the cavities. Different adhesive systems were applied to each pulp capping material group. After applying the composite resin, the shear bond strength (SBS) values of the specimens were determined in the Instron test device. Fracture types were evaluated using a stereomicroscope and a scanning electron microscope. Data were analyzed by Shapiro–Wilk’s and Kruskal–Wallis H test. Results: There is a statistically significant difference between pulp capping materials in terms of SBS values ( P < .05). Dycal’s SBS was found significantly lower than other materials, and the highest bond strength was observed in Calcimol LC material. Although there is no statistically significant difference ( P > .05) between the adhesive agent groups in terms of SBS, Gluma 2 Bond showed the highest bond strength value. Conclusion: In traditional pulp capping materials such as Dycal, MTA, and Biodentine, using a two-step self-etch adhesive system can result in higher bond strength values. In resin-based TheraCal LC,, ApaCal ART, and Calcimol LC materials, it may be recommended to use a two-step etch and rinse adhesive system.

scholarly journals Effect of Different Matrix Metalloproteinase Inhibitors on Microtensile Bond Strength of an Etch-and-Rinse and a Self-etching Adhesive to Dentin

2015 ◽  
Vol 40 (1) ◽  
pp. 80-86 ◽  
Author(s):  
P Zheng ◽  
M Zaruba ◽  
T Attin ◽  
A Wiegand
Keyword(s):  
Matrix Metalloproteinase ◽  
Bond Strength ◽  
Green Tea ◽  
Green Tea Extract ◽  
The Self ◽  
Mode Analysis ◽  
Microtensile Bond Strength ◽  
Mmp Inhibitors ◽  
Etch And Rinse ◽  
Tea Extract

SUMMARY Aim This study aimed to analyze the effect of different matrix metalloproteinase (MMP) inhibitors on the microtensile bond strength (microTBS) of an etch-and-rinse and a self-etching adhesive after 9 months of aging. Methods and Materials Flat human dentin surfaces were bonded either with an etch-and-rinse adhesive (Optibond FL) or a self-etching adhesive (Clearfil SE Bond). Dentin surfaces were left untreated or were pretreated with MMP inhibitors (2% chlorhexidine digluconate [CHX], 0.05% green tea extract, 1 mM ferrous sulfate, or 0.2 mM galardin) prior to application of the adhesive. Composite buildups were made incrementally. Pretreated groups were tested after 9 months of storage in artificial saliva (37°C) and compared with untreated groups, which were tested immediately (initial microTBS) and upon aging (9-month microTBS). Data were analyzed by linear mixed-model regression. Failure mode analysis was performed microscopically and statistically analyzed by repeated-measures analysis of variance (p&lt;0.05). Results MicroTBS of the etch-and-rinse adhesive but not of the self-etching adhesive was significantly decreased by aging. For Optibond FL, pretreatment with 2% CHX, 0.05% green tea extract, and 0.2 mM galardin revealed bond strength values (MPa) similar to the initial microTBS (32.1±14.8) and significantly higher compared with the microTBS (20.3±13.6) of aged untreated dentin. No significant differences were observed between groups bonded with Clearfil SE Bond (initial microTBS: 28.3±12.4; 9-month microTBS: 25.3±11.8). Application of the MMP inhibitors decreased the number of adhesive failures compared with untreated controls after 9 months of aging, but this effect was not significant. Conclusion The MMP inhibitors prevented the decrease in microTBS upon aging of the etch-and-rinse but not of the self-etching adhesive.

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