Influence of the passive evaporation of adhesive on the conductance of dentin
Rev. clín. periodoncia implantol. rehabil. oral (Impr.)
; 10(1): 38-40, Apr. 2017. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-844733
Biblioteca responsável:
CL1.1
ABSTRACT
ABSTRACT Aim:
Determine the influence of time of passive evaporation of the solvent in a universal adhesive on the hydraulic conductance and permeability of dentin in an ex vivo human model. Henceforth, 60 healthy non-occluding third molars, indicated for therapeutic extraction/removal, of informed and consented patients aged between 18 and 30 years, were used here in. First, extracted teeth were incorporated into epoxy resin blocks and then dentin disks (1mm +/- 0.1 mm thick) were prepared. Dentin was acid etched with 35% ortho-phosphoric acid for 15 seconds in order to remove the smear layer and obtain permeable dentin. Samples were then randomized and divided into 5 groups (n=12). A Single Bond Universal adhesive layer with different time of passive evaporation of the solvent was then applied GC=10 seconds, G1=30 seconds, G2=60 seconds, G3=300 seconds and G4=50 minutes. Finally, the flow rate was measured using a diffusion chamber, a model previously proposed by Pashley et al.Results:
The obtained hydraulic conductance averages were as follows GC=0.00052, G1=0.00018, G2=0.00006, G3=0.00005, G4=0.00005 expressed in uL•cm-2•min-1cm•H2O-1. For comparisons between groups, ANOVA and post hoc Tukey (ρ<0.05) tests were applied, resulting in a statistically significant difference between the GC group and all experimental groups (ρ <0.05). An influence of solvent passive evaporation thereby reducing hydraulic conductance in the experimental groups, was detected.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Volatilização
/
Adesivos
/
Adesivos Dentinários
Tipo de estudo:
Ensaio clínico controlado
Idioma:
Inglês
Revista:
Rev. clín. periodoncia implantol. rehabil. oral (Impr.)
Assunto da revista:
Odontologia
Ano de publicação:
2017
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
Chile
Instituição/País de afiliação:
UNESP/BR
/
Universidad de Los Andes/CL
/
University of Chile/CL