Yasmine Ashraf El Banna, Sherif Bahgat El Taweel And Sara Ahmed Mahmoud,

ABSTRACT


Aim: Testing The Microshear Bond Strength Of Self Adhering Flowable Composite And Conventional Flowable Composite To Dentine Of Primary Teeth.

Materials & Methods: Thirty Sound Human Deciduous Canines Were Collected, The Collected Teeth Were Indicated For Extraction Due To Normal Shedding, Over Retention And Orthodontic Reasons. Teeth Were Assigned Into Three Groups According To The Restorative Materials Used (n=10), Group A: Self Adhering Flowable Composite (Fusio�Liquid Dentin), Group B: Self Adhering Flowable Composite (Fusio�Liquid Dentin) + Self Etch Adhesive (Single Bond Universal), Group C: Conventional Flowable Composite (Filtek� Z350 XT Flowable) + Self Etch Adhesive (Single Bond Universal). Teeth Were Restored For Microshear Bond Strength Testing Then Samples Were Stored In Isotonic Saline Solution For 24 Hours. Then Microshear Bond Strength Was Tested Using Universal Testing Machine; Load Was Applied Till Specimen�s Fail.

Results: Group B Showed The Highest Bond Strength Values While Group A Showed The Lowest Bond Strength Values (P?0.001).

Conclusions: Self Adhering Composite Applied According To Manufacturers� Instructions Produced The Least Bond Strength Values To Dentine Of Primary Teeth. However, Its Bonding Performance Improved Significantly After Preceding It With Self-etch Adhesive System.