The effect of simulate intraoral sandblasting on the band strength between enamel and composite resin
- VernacularTitle:模拟口内喷砂对牙釉质与复合树脂间粘接强度的影响
- Author:
Hanping ZHANG
;
Yan WEI
;
Xuliang DENG
;
Gang ZHENG
;
- Publication Type:Journal Article
- Keywords:
Dental enamel;
Composite resins;
Sandblast
- From:
Journal of Peking University(Health Sciences)
2004;0(02):-
- CountryChina
- Language:Chinese
-
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.
