Yousra Samir M. Helmy, Mohamed Sherif M. Salah El Din Hassan Farag, Ola Mohamed Ibrahim Fahmy And Ghada Abd El-Hamid El Baz Younes,

ABSTRACT


Aim: This Study Was Conducted To Compare The Sealing Ability And The Micro-morphological Changes Of The Tooth/restoration Interface Throughout 3 Months Storage Period Of Self-adhesive Flowable Restorative Resin Composite And A Conventional Flowable Restorative Resin Composite With Its Corresponding Self- Etch Adhesive System.

Materials and Methods: A Total Of Thirty Extracted, Caries-free, Premolars Were Prepared With A Standardized Cavity Preparations, Fifteen Of Which Were Restored With The Self- Adhering Flowable Composite And The Other Fifteen Teeth Were Restored With The Conventional Flowable Composite With Its Corresponding, One- Step Adhesive System. Each Group Was, Furtherly, Subdivided Into T1, T2 And T3 For Three Storage Periods Of 1 Week, 1month And 3 Months Respectively. Samples Were, Then, Prepared For Marginal Microleakage And Scanning Electron Microscope Evaluations.

Results: There Was No Significant Difference Between The Microleakage Values Of The Two Materials At Each Different Storage Period. As Well As, Over The Whole Storage Period. The SEM Evaluation Of Both Restoratives Showed That, The Restoration/enamel Interface Seems To Be With Minimal Gaps When Self- Adhering Flowable Composite Was Used But Was Similar At The Dentin Interface. Regarding The Effect Of Time, No Obvious Significant Changes Occurred At The Tooth/restoration Interface, For Both Materials, Along The Tested Periods. Conclusion: The Sealing Ability Of Both Tested Restorative Materials, Regardimg The Microleakage Assessment And The SEM Evaluation Of The Tooth/restoration Interface, Was Almost Similar When Tested, At Different Storage Periods In Vitro.