Rami Mahmoud Abdel Moneim Elmougi, Mahmoud Ibrahim El Shennawy Olfat Mohamed Gab Allah And Atia Abd Elwareth Yousif,

ABSTRACT


Introduction: Demineralization Is Considered One Of The Major Side-effect Associated With Fixed Orthodontic Treatment Which Usually Associated With Poor Oral Hygiene. Aim Of The Work: The Purpose Of This Study Was To Compare In Vitro The Enamel Integrity After Orthodontic Banding With Zinc Phosphate Cement, Conventional Glass Ionomer Cement, Resin Modified Glass Ionomer Cement And Polyacid-modified Composite Resin Cement Using Atomic Force Microscope. Method: The Study Was Conducted On 50 Extracted Premolar Teeth. Teeth Were Cleaned, Dried And Divided Into Five Groups Of 10 Each With Their Respective Cement. The Teeth Were Then Placed In Artificial Saliva For 30 Days. Then Deboning, Cleaning And Placed In Artificial Demineralizing Solution For 4 Weeks. Later Cleaned And Prepared For Examination Using Atomic Force Microscope. The Average Roughness (Ra) And The Surface Area (SA) Were Measured For Each Scanned Area, And Numerical Data Were Presented As Means And Standard Deviations. Result: The Results Obtained From The Present Study Revealed That (GIC, RMGIC, Compomer) Demonstrated Significantly Less Enamel Demineralization As Measured By AFM Than Did The ZPC And The Control Group. The GIC And RMGIC Cements Showed Significantly Lesser Amount Of Demineralization Than The Compomer Cement Group. Conclusion: GIC And RMGIC Are Both Effective In Reducing Enamel Demineralization After Orthodontic Banding As Measured By Atomic Force Microscope