A novel bioactive glass-ceramic for treating dentin hypersensitivity
Braz. oral res
;
24(4): 381-387, Oct.-Dec. 2010. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-569231
ABSTRACT
Dentin hypersensitivity (DH) is a painful response to stimulus applied to the open dentinal tubules of a vital tooth. It's a common oral condition, however, without an ideal treatment available yet. This work evaluated in vitro the effect of micron-sized particles from a novel bioactive glass-ceramic (Biosilicate) in occluding open dentinal tubules. A dentin disc model was employed to observe comparatively, using scanning electron microscopy (SEM), dentinal tubule occlusion by different products and deposition of hydroxyl carbonate apatite (HCA) on dentin surface by Biosilicate, after a single application G1 - Dentifrice with potassium nitrate and fluoride; G2 - Two-step calcium phosphate precipitation treatment; G3 - Water-free gel containing Biosilicate particles (1 percent); G4 - Biosilicate particles mixed with distilled water in a 110 ratio; all of them after 1, 12 and 24 hours of immersion in artificial saliva. Fourier transform infrared spectroscopy (FTIR) was performed to detect HCA formation on dentin discs filled with Biosilicate after 2 minutes, 30 minutes and 12 hours of immersion in artificial saliva. SEM showed a layer of HCA formed on dentin surface after 24 hours by G4. G1, G2 and G3 promoted not total occlusion of open dentinal tubules after 24 hours. FTIR showed HCA precipitation on the dentin surface induced by Biosilicate after 30 minutes. The micron-sized particles from the bioactive glass-ceramic thus were able to induce HCA deposition in open dentinal tubules in vitro. This finding suggests that Biosilicate may provide a new option for treating DH.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Cerámica
/
Dentina
/
Sensibilidad de la Dentina
/
Desensibilizantes Dentinarios
Tipo de estudio:
Estudio pronóstico
Idioma:
Inglés
Revista:
Braz. oral res
Asunto de la revista:
Odontología
Año:
2010
Tipo del documento:
Artículo
/
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