TY - GEN AU - Amir Mohamed Afifi AU - Mohamed Rida Farid , AU - Olfat Elsayed Hassanein , TI - The effect of some storage media on the surface roughness and chemical changes of four esthetic restorative materials / PY - 2002/// CY - Cairo : PB - Amir Mohamed Afifi , KW - Chemical changes KW - Four esthetic restorative materials KW - Storage media KW - Surface roughness N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Oral and Dental Medicine - Department Of Operative Dentistry; Issued also as CD UR - http://172.23.153.220/th.pdf ER -