In vitro evaluation of bond strength and sealing ability of a new low-shrinkage, methacrylate resin-based root canal sealer.
J Formos Med Assoc
; 111(6): 340-6, 2012 Jun.
Article
em En
| MEDLINE
| ID: mdl-22748625
ABSTRACT
BACKGROUND/PURPOSE:
The aim of this study was to evaluate a new low-shrinkage, methacrylate resin-based root canal sealer (LSRCS) to determine its bond strength in radicular dentin and sealing ability.METHODS:
Extracted single-root teeth were randomly divided into three experimental groups (n=20) for obturation with Gutta-percha (GP)/AH Plus, Resilon/Epiphany, or Resilon/LSRCS. One-half of each experimental group was analyzed by the push-out test, using sections perpendicular to the long axis divided into 1mm serial slices and a universal testing machine to detect the loading force. The other half was analyzed by the dye penetration test using 2% methylene blue solution (pH=7) and measuring dye leakage under a stereomicroscope.RESULTS:
The push-out test revealed significant differences (p<0.05) in bond strength produced by the three sealers; the GP/AH Plus group showed the highest bond strength, followed by Resilon/LSRCS and Resilon/Epiphany. According to the microleakage data, GP/AH Plus showed the least dye penetration, which was significantly less than Resilon/Epiphany and Resilon/LSRCS. There was no difference in apical leakage between Resilon/Epiphany and Resilon/LSRCS.CONCLUSION:
The newly developed LSRCS, although not superior to AH Plus in bond strength or sealing ability, possesses monoblock potential and application prospects.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Resinas Sintéticas
/
Materiais Restauradores do Canal Radicular
/
Metacrilatos
Tipo de estudo:
Evaluation_studies
Limite:
Humans
Idioma:
En
Revista:
J Formos Med Assoc
Assunto da revista:
MEDICINA
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
China