TY - BOOK AU - Rehab Mohamed Ahmed Hamed AU - Inas Elghandour , AU - Mohamed Adel Ezzat Khairy , TI - Silorane based resin composite versus nanohybrid resin composite : : Effect of PH of storage media on volumetric changes and tooth / restoration interface / PY - 2011/// CY - Cairo : PB - Rehab Mohamed Ahmed Hamed , KW - PH of storage media KW - Silorane based resin composite KW - Versus nanohybrid resin composite N1 - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry; Issued also as CD N2 - The aim of the present study is to investigate the effect of PH of storage medium on volumetric changes and tooth restoration interface of a silorane based resin composite and a nano - hybrid resin composite at different time periods. For volumetric dimensional changes, a total of sixty specimens was prepared by applying each restorative material [a silorane based resin composite (Filtek P90) and a nano - hybrid resin composite (Filtek Supreme XT)] inside a central hole of 2mm diameter and 3mm height of standardized teflon mold and cured following manufacturer instructions. Length and diameter of each specimen was measured before and after storage using a digital caliper, change in volume was then calculated using mathematical equation ER -