Effect of air drying time and distance of self-etch adhesives on dentin bond strength
Mona Mohamed El-Sayed Arida;
Abstract
This study was conducted to evaluate the effect of adhesive type, air drying duration and air drying distance on shear bond strength of nanohybrid resin composite to dentin.
A total of 90 sound extracted human premolars were used, specimens were divided into two main groups (45 each) according to the type of adhesive used, each group was further subdivided into nine subgroups according to variation in air drying duration and distance from dentin surface (n=5).
A flat dentin surface was created perpendicular to the tooth’s longitudinal axis. After adhesives application, they were air dried for different durations at different distances and light cured. Resin composite was condensed into a teflon mold and polymerized on each specimen.
After storage in distilled water for 24 hours at room temperature, specimens were subjected to shear bond strength testing using a universal testing machine at a crosshead speed of 0.5mm/min. data were collected and analyzed using SPSS version 20. 3 way ANOVA was used to test the effect of different types of adhesives, drying duration and drying distance on shear bond strength of resin composite to dentin.
The results showed that the type of adhesive, air drying duration, air drying distance and their interactions had a statistically significant effect on shear bond of resin composite to dentin.
Under the limitations of the current study, these conclusions can be drawn:
1- Both air drying duration and air drying distance from the dentin surface had a significant effect on the resulting shear bond strength.
2- The bond strength was adversely affected by increasing the air drying distances.
A total of 90 sound extracted human premolars were used, specimens were divided into two main groups (45 each) according to the type of adhesive used, each group was further subdivided into nine subgroups according to variation in air drying duration and distance from dentin surface (n=5).
A flat dentin surface was created perpendicular to the tooth’s longitudinal axis. After adhesives application, they were air dried for different durations at different distances and light cured. Resin composite was condensed into a teflon mold and polymerized on each specimen.
After storage in distilled water for 24 hours at room temperature, specimens were subjected to shear bond strength testing using a universal testing machine at a crosshead speed of 0.5mm/min. data were collected and analyzed using SPSS version 20. 3 way ANOVA was used to test the effect of different types of adhesives, drying duration and drying distance on shear bond strength of resin composite to dentin.
The results showed that the type of adhesive, air drying duration, air drying distance and their interactions had a statistically significant effect on shear bond of resin composite to dentin.
Under the limitations of the current study, these conclusions can be drawn:
1- Both air drying duration and air drying distance from the dentin surface had a significant effect on the resulting shear bond strength.
2- The bond strength was adversely affected by increasing the air drying distances.
Other data
| Title | Effect of air drying time and distance of self-etch adhesives on dentin bond strength | Other Titles | تأثير مدة ومسافة التجفيف بالهواء علي قوة الربط للواصق الذاتية إلي العاج السني | Authors | Mona Mohamed El-Sayed Arida | Issue Date | 2015 |
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