OZET Dishekimliginde kullanilan cinko fosfat simanlar ile ayni simanin tozuna maden tozlari karistirilarak bakteriostatik etki saglanmaya calisilan germisid simanlarin bakteriler uzerindeki etkileri arastirilmistir. Curuk dis kavitesinden alinan maddeler uretilerek elde edilen bakterilere, 2 cinko fosfat ve 2 germisid siman uygulanmistir. Elde edilen bulgular degerlendirildikten sonra asagidaki sonuclara varilmistir. 1 — Cinko fosfat ve germisid simanlarin bakteriler uzerindeki ol durucu etkisi aynidir. 2 — Tum simanlar bakteriostatik etkilidir. 3 — Simanlarinin bakteriostatik etkisi reaksiyon sicakliklarinin cok yuksek olmasindan oturudur. 4 — Mixt bakterilere simanlar daha etkili olmaktad ir. 5 — Simanlarin kisa surede asit gorunumden baz gorunume donusmeleri, bakteriler uzerindeki asit etkisini azaltir. 6 — Simanlarin bakteriostatik etkileri oteki tur bakteriler uzerinde de arastirilmalidir. 7 — Reaksiyon sicakligi 36°C yi gecmeyen yeni tur simanlarla yapilacak bu tur bir arastirma, reaksiyon sicakliginin bakteriostatik etki ile kesin iliskisini ortaya cikaracaktir. 8 — Germisid simanlara degisik maden tozlan ya da baska maddeler katilarak bakteriostatik etkinin arttirilmasi arastirilmalidir. SUMMARY Bacteriostatic effects of Zinc Phosphate and Germicid cements on bacteria is researched. 4 types of cements are applied immediately, one hour, six hours and twenty-four hours after mixing the powder and liquid solution on bacteria, (Alpha hemoliticus streptococcus - Neisseria - and mixture of Alpha H. S. + Neisseria). According to the finding's all cements rendered bacteriostatic effect. It was coused by the high setting temperatures of the cements and they were more effective on mix bacteria. Experiments that will be made with cements having setting temperatures below 36 C may explain the relationship between setting temperatures and the bacteriostatic effects on bacteria. RESULTS 1 — The destructive effects of zinc posphate and germicid cements on bacteria were similar. 2 — All cements render bacteriostatic effect. 3 — The bacteriostatic effects of cements are caused by the high setting temperature, 4 — Cements are more effective on the mixed bacteria. 5 — The rapid transformation of cements from, acid to alkaline condition decreases their acid effectiveness on bacteria. 6 — The bacteriostatic effects of cements on other types of bacteria should be investigated. 7 — Experiments which will be made in the future with new types of cements having setting temperatures that do not exceed 36°C will definitely explain the relationship between setting temperatures and the bacteriostatic effects on similar types of bacteria. 8 — The increase in bacteriostatic effects should be investigated by adding different metallic salts or other materials to germicid cements.