| Autor: |
Halwai, Hemant Kumar, Kamble, Ranjit Haridas, Hazarey, Pushpa Vinay, Gautam, Vanita |
| Předmět: |
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| Zdroj: |
ORTHODONTICS: The Art & Practice of Dentofacial Enhancement; 2012, Vol. 13 Issue 1, pe1-e9, 9p, 5 Color Photographs, 8 Black and White Photographs, 2 Charts, 1 Graph |
| Abstrakt: |
Aim: To evaluate and compare in vitro the shear bond strength of rebonded orthodontic brackets among the three most frequently used rebonding methods-sandblasting, direct flaming, and grinding with a green stone bur. The surface characteristics of new and rebonded bracket bases were also compared using scanning electron microscopy (SEM). Methods: The sample used in the present study comprised 60 extracted human premolars bonded with brackets. The sample was divided into three groups (each n = 20; sandblasting, direct flaming, and grinding with a green stone bur). SEM was used to compare the surface characteristics of the new and rebonded bracket bases for all three groups. Results: The Z test for the direct flaming and grinding groups revealed statistically significant bond strength (P < .05). The ANOVA test for all three groups showed P < .05, which is statistically significant. SEM for the sandblasting method showed well-defined retentive areas. Conclusion: When rebonding brackets, sandblasting the bracket base yields the highest bond strength. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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