Effect of ozone gas application on the mechanical properties of dental adhesives bonded to dentin.
Dent Mater
; 24(10): 1428-34, 2008 Oct.
Article
em En
| MEDLINE
| ID: mdl-18649934
ABSTRACT
OBJECTIVES:
To assess the effect of ozone gas on the mechanical properties of different classes of dental adhesives.METHODS:
Extracted molars were sectioned perpendicularly to their long axis for obtaining dentin slices to be bonded with one of the following adhesives Prime&Bond NT (Dentsply), Excite (Ivoclar-Vivadent), Syntac/Heliobond (Ivoclar-Vivadent) and Silorane System Adhesive (3 M-ESPE). Prior to bonding, the slices were sectioned in two halves one was treated with ozone gas for 120 s (4.2g/m3; HealOzone, KaVo) and the other served as control. The Vicker's hardness (VH), elastic modulus (E), elastic work (We/Wtot) and the creep (Cr) of the materials were measured with an automatic micro hardness indenter (Fischer) 30 min and 24 h after bonding procedure. Data were analyzed with the multivariate ANOVA followed by the Tukey's test and partial eta-squared statistics.RESULTS:
The adhesive and the time of testing were significant factors affecting the investigated parameters (p<0.001; etap2>or=0.06). Dentin treatment, though significant, exerted a minimal effect on mechanical properties (etap2SIGNIFICANCE:
Ozone gas did not compromise the mechanical properities of the tested adhesives. Thus, its application on dentin prior to bonding procedures is possible, without impairing the performance of the final restoration.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oxidantes Fotoquímicos
/
Ozônio
/
Adesivos Dentinários
/
Dentina
Limite:
Humans
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article