The effect of simulate intraoral sandblasting on the band strength between enamel and composite resin / 北京大学学报(医学版)
Journal of Peking University(Health Sciences)
;
(6)2004.
Article
in Chinese
| WPRIM
| ID: wpr-678854
ABSTRACT
Objective:
To study whether the bond strength between enamel and composite resin could be enhanced by intraoral sand abrasive.Methods:
Ten human maxillary first incisior teeth were divided into 2 groups The experimental group was sandblasted with 30 ?m Al 2O 3 (CoJet Sand, pressure 300 kPa) from a distance of 5 mm for 5 seconds, and the control group were not sandblasted. The Herculite composite resin composite cylinders were bonded with Coltene system. Bonded specimens were stored in 37 ℃ distilled water for 24 h, then were subjected to shear force in a testing machine Stress at failure was calculated in Mpa, and mode of failure was recorded. The Student t test was applied to the data.Results:
The shear bond strength of experimental groups was (33.0?1.8) MPa , and that of control groups was (26.7?5.2) MPa ,there was significant difference between these two groups. All the adhesive failures happened at the enamel composite resin interface , except that cohesive failure happened in one sandblasted specimen.Conclusion:
Intraoral sandblasting could significantly enhance the shear bond strength between enamel and composite resin.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Journal of Peking University(Health Sciences)
Year:
2004
Type:
Article
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