Qualitative SEM/EDS analysis of microleakage and apical gap formation of adhesive root-filling materials
J. appl. oral sci
;
20(3): 329-334, May-June 2012. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-643729
ABSTRACT
OBJECTIVE:
The aim of this study was to compare the correspondence between gap formation and apical microleakage in root canals filled with epoxy resin-based (AH Plus) combined or not with resinous primer or with a dimethacrylate-based root canal sealer (Epiphany). MATERIAL ANDMETHODS:
Thirty-nine lower single-rooted human premolars were filled by the lateral condensation technique (LC) and immersed in a 50-wt% aqueous silver nitrate solution at 37ºC (24 h). After longitudinal sectioning, epoxy resin replicas were made from the tooth specimens. Both the replicas and the specimens were prepared for scanning electron microscopy (SEM). The gaps were observed in the replicas. Apical microleakage was detected in the specimens by SEM/energy dispersive spectroscopy (SEM/EDS). The data were analyzed statistically using an Ordinal Logistic Regression model and Analysis of Correspondence (α=0.05).RESULTS:
Epiphany presented more regions containing gaps between dentin and sealer (p<0.05). There was correspondence between the presence of gaps and microleakage (p<0.05). Microleakage was similar among the root-filling materials (p>0.05).CONCLUSIONS:
The resinous primer did not improve the sealing ability of AH Plus sealer and the presence of gaps had an effect on apical microleakage for all materials.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Materiales de Obturación del Conducto Radicular
/
Obturación del Conducto Radicular
/
Ápice del Diente
/
Filtración Dental
/
Resinas Epoxi
Tipo de estudio:
Ensayo Clínico Controlado
/
Investigación cualitativa
/
Factores de riesgo
Límite:
Humanos
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2012
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
Institución/País de afiliación:
Federal University of Maranhão/BR
/
State University of Ponta Grossa/BR
/
University of São Paulo/BR
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