Tricalcium silicate induced mineralization for occlusion of dentinal tubules.
Aust Dent J
; 56(2): 175-80, 2011 Jun.
Article
em En
| MEDLINE
| ID: mdl-21623810
ABSTRACT
BACKGROUND:
The aim of this study was to evaluate the dentinal tubule occluding ability of tricalcium silicate (Ca(3) SiO(5) or C(3) S) in vitro.METHODS:
Dentine discs were prepared from extracted caries-free human third molars and etched with 0.02 M citric acid (pH 4) for 3 minutes in order to produce patent dentinal tubules. Tricalcium silicate pastes of different viscosities were applied to the surface of the dentine specimens for 3 minutes and then removed with a swab followed by deionized water rinse. The dentine specimens were immersed in artificial saliva for 7 days. The tubule occlusion, sealing depth and chemical composition of the dentine specimens and bonding force between the dentine matrix and mineralized layer were evaluated by scanning electron microscopy, energy dispersion X-ray spectroscopy, X-ray diffraction analysis and a nanoscratch test.RESULTS:
A homogeneous layer of mineral crystals was precipitated onto the dentine surface and caused significant occlusion of the dentinal tubules. The dentine permeability and sealing depth of the C(3) S increased with the decrease of viscosity of the paste. With a proper viscosity of C(3) S pastes, the interface between the mineralized layer and the dentine matrix bonded well.CONCLUSIONS:
This study suggests that C(3) S may be an effective agent for the treatment of dentine hypersensitivity.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Silicatos
/
Compostos de Cálcio
/
Dentina
/
Dessensibilizantes Dentinários
Limite:
Humans
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article