Effect of chemical and natural irrigant solutions on microhardness of root dentin an in vitro study
Braz. j. oral sci
; 17: e18409, 2018. tab
Article
em En
| LILACS, BBO
| ID: biblio-970529
Biblioteca responsável:
BR218.1
ABSTRACT
Aim:
Modifications in the mechanical properties of dentin may reduce the fracture resistance of tooth, especially after endodontic treatment. The aim of present study was to evaluate the effect of the irrigation with different root canal irrigants on the microhardness of root dentin.Methods:
The coronal portion of 60 single-rooted bovine incisors was sectioned and the pulpal tissue removed using endodontic K-files. The roots were cut transversely to obtain 2 fragments, which were embedded in acrylic resin and randomly distributed into six groups (n=20) according to the irrigation protocol distilled water (DW) (control); 2% chlorhexidine solution (CHX); 6% sodium hypochlorite (NaOCl); 6% calcium hypochlorite (Ca[OCl]2); QMix; and 6.5% grape seed extract solution (GSE). The solutions were kept in contact with the root dentin specimens for 30 min. After that, irrigation with 5 mL of DW was performed. The Vickers microhardness was determined by performing three indentations in all specimens, using 300-g load and 20-second dwell time. The first indentation was made 1.000 µm from the root canal entrance, and two other indentations were made at a distance of 200 µm from each other. The microhardness value for each specimen was obtained as the average of the results for the three indentations. Data were statistically analyzed using one-way ANOVA with 5% significance level.Results:
All the tested irrigant solutions maintained the same microhardness level of the root dentin when compared to the control group, with no statistically significant differences between them (p<0.05)Conclusion:
The tested irrigant solutions did not present ability to modify the microhardness of root dentinPalavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
BBO
/
LILACS
Assunto principal:
Hipoclorito de Sódio
/
Clorexidina
/
Hipoclorito de Cálcio
/
Extrato de Sementes de Uva
/
Dureza
Tipo de estudo:
Guideline
Limite:
Animals
Idioma:
En
Revista:
Braz. j. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Brasil
/
Estados Unidos
País de publicação:
Brasil