| Autor: |
Shyam Lohakare, Sandhya C. A., Hazarey, Pushpa Vinay |
| Předmět: |
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| Zdroj: |
International Journal of Dental Clinics; 2014, Vol. 6 Issue 1, p4-6, 3p |
| Abstrakt: |
Amis and Objectives: To evaluate the mode of bond failure of brackets bonded with self cure resin reinforced glass inomer cement GC Fuji Ortho and composite resin (Medicept). To record and compare the site of bond failure and to study the enamel surface and bracket surface following debonding by using Scanning Electron Microscope (SEM). Materials and method: Brackets used in this study were stainless steel mesh backed beggs flat and curved brackets. Adhesive resin used for orthodontic bonding were no -mix composite resin, self-cure resin reinforced glass ionomer cement. Housefield tensometer machine was used to measure shear bond strength after debonding of bracket from tooth. The site of bond failure was determined as cohesive and adhesive. The specimen were then examined under a scanning electron microscope to study the enamel surface. Results: The site of bond failure of composite resin was cohesive and the site of bond failure for self cure resin reinforced glass ionomer cement was mainly adhesive. Scanning electron microscope study for composite resin showed the presence of material on tooth surface after debonding with enamel loss in the form of cracks or voids. SEM study for glass inomer cement shows absence of material on tooth surface with no enamel loss. Conclusion: Self-cure resin reinforced glass inomer cement is better than composite resin due to its chemical adhesive properties than mechanical retentive property of composite. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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