Effect of smear layer on root demineralization adjacent to resin-modified glass ionomer.
J Dent Res
; 82(2): 146-50, 2003 Feb.
Article
em En
| MEDLINE
| ID: mdl-12562890
ABSTRACT
The cariostatic effect of resin-modified glass ionomer (RMGI) on secondary root caries is well-documented. However, this beneficial effect may be dependent upon the mode of cavity surface treatment. To investigate this relationship, we studied 4 cavity surface treatments prior to the placement of RMGI no treatment (None), polyacrylic acid (PAA), phosphoric acid (H(3)PO(4)), and Scotchbond Multi-Purpose adhesive (SMP) as a control. Specimens were aged for two weeks in synthetic saliva, thermocycled, and subjected to an artificial caries challenge (pH 4.4). Polarized light microscopy (PLM) and microradiography (MRG) showed significantly less demineralization with the H(3)PO(4) cavity surface treatment as revealed by ANOVA and Tukey's multiple comparisons (p < or = 0.05). Dentin fluoride profiles determined by electron probe microanalysis (EPMA) supported PLM and MRG findings. It may be concluded that removal of the smear layer with phosphoric acid provides significantly enhanced resistance to secondary root caries formation adjacent to RMGI restorations.
Buscar no Google
Bases de dados:
MEDLINE
Assunto principal:
Condicionamento Ácido do Dente
/
Desmineralização do Dente
/
Camada de Esfregaço
/
Cárie Radicular
/
Preparo da Cavidade Dentária
/
Dentina
/
Cimentos de Ionômeros de Vidro
Limite:
Humans
Idioma:
En
Revista:
J Dent Res
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Estados Unidos