Shear bond strength of enamel surface treated with air-abrasive system
Braz. dent. j
;
13(3): 175-178, 2002.
Article
Dans Anglais
| LILACS, BBO
| ID: lil-338538
ABSTRACT
The aim of this study was to evaluate the shear bond strength of a composite resin to dental enamel, using three different surface treatments. Fifteen sound third molars were randomly assigned to three groups. The mesial and distal surfaces were flattened and covered using adhesive tape with a central orifice delimiting the adhesion area (7.07 mm²). Group I, the enamel surface was conditioned with 37 percent phosphoric acid for 15 s; group II, the surface was treated using air abrasion with aluminum oxide; group III, the enamel surface was treated using an association of air abrasion with aluminum oxide and 37 percent phosphoric acid. The Single Bond (3M) adhesive system was applied and a Teflon matrix was placed and filled with composite resin Z-100 (3M) and light-cured. The shear bond strength test was performed with a universal testing machine. The acid etching technique and air abrasion with aluminum oxide associated with acid etching had the highest shear bond strength values. Data were subjected to statistical analysis using ANOVA and the Tukey test, and no statistically significant difference in shear bond strength was observed between group I (12.49 ± 2.85 MPa) and group III (12.59 ± 2.68 MPa). In contrast, both groups had statistically better shear bond strengths compared to group II (0.29 ± 0.56 MPa; p<0.05). Air abrasion with aluminum oxide does not substitute acid etching. The association of these methods to obtain adequate adhesion to the substrate is necessary
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Mordançage à l'acide
/
Techniques in vitro
/
Collage dentaire
/
Air abrasion
/
Émail dentaire
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Braz. dent. j
Thème du journal:
Dentisterie
Année:
2002
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
University of São Paulo/BR
Documents relatifs à ce sujet
MEDLINE
...
LILACS
LIS