الفهرس 
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Abstract
This study was carried out to:
1- Examine morphological features using SEM (Scanning Electron Microscope) of acid base resistant zone at the adhesive interface of dentin, using 10-MDP based self-etch adhesive, before and after acid base challenge. (Artificial secondary caries formation( 2- Chemical analysis using (Thin film X-ray diffraction) of ABRZ and superdentin before and after acid base challenge. 3- Validate micro-CT scanning and 3D models reconstruction for examining the ultrastructure of the adhesive interface.
PICO
Problem:Carious posterior tooth.
Intervention:Resin composite restoration using 10-MDP containing adhesive subjected to acidic challenge.
Comparison: Resin composite restoration using 10-MDP containing adhesive with no acidic challenge.
Outcome: observation of morphological characteristics and chemical analysis of ABRZ produced with 10-MDP containing adhesives.