IMEMR (Index Medicus Eastern Mediterranean Region ): http://www.emro.who.int/emrjorlist/details.aspx?docn=6521 CAS (Chemical Abstract ) : http://www.cas.org ISC (Islamic World Science Citation Center ) http://www.srlst.com Index copernicus : http://journals.indexcopernicus.com/karta.phps Cinahl : http://www.cinahl.com/index.html SID (Scientific Information Database) : http://www.sid.ir Index Medex : http://iranmedex.com Magiran : http://magiran.com/journal of dentistry