Nanoleakage phenomenon on deproteinized human dentin
J. appl. oral sci
;
15(4): 285-291, July-Aug. 2007. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-463680
ABSTRACT
OBJECTIVE:
The purpose of this study was to evaluate the influence of dentin deproteinization on the nanoleakage phenomenon. MATERIAL ANDMETHODS:
Class V cavities were prepared in 12 human molars with cervical margins located in dentin. The cavities were assigned to 2 groups (n=6) according to dentin treatment Group I - dentin treated in accordance with the manufacturer's instructions and Group II - dentin treated following the manufacturer's instructions + 10 percent NaOCl. Each group was sub-divided into three groups, according to the DBS (dentin bonding system) used Scotchbond Multi Purpose (SBMP), Prime & Bond NT (PB) and Clearfil SE Bond (SE), which were applied according to manufacturer's instructions. The cavities were restored with composite resin, and the specimens were immersed in a tracer agent (AgNO3 50 percent) for 24 h. The teeth were sectioned buccolingually through the center of the restorations, and nanoleakage pattern was evaluated by scanning electron microscopy (SEM) using the backscattered electron image mode.RESULTS:
SEM analysis showed different nanoleakage patterns for each DBS. Irrespective of dentin treatments, all SBMP specimens showed nanoleakage. SE did not show any nanoleakage with both dentin treatments used. PB showed nanoleakage within the hybrid layer only in Group I.CONCLUSIONS:
The influence of dentin deproteinization on the nanoleakage phenomenon was dependent on dentin bonding system formulation and bonding strategies.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2007
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Federal Fluminense University/BR
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