Effect of different concentrations of green tea extract solutions on bonding durability of etchand- rinse adhesive system to caries affected dentin
Braz. j. oral sci
;
20: e210328, jan.-dez. 2021. ilus
Article
in English
| BBO, LILACS
| ID: biblio-1253738
ABSTRACT
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
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tensile Strength
/
Camellia sinensis
/
Dental Caries
/
Dentin
Type of study:
Controlled clinical trial
/
Practice guideline
Language:
English
Journal:
Braz. j. oral sci
Journal subject:
Dentistry
Year:
2021
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
São Leopoldo Mandic Faculty/BR
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