Nesrin Anil

FARKLI METAL ALAŞIMLARDAN HAZIRLANAN METAL DESTEKLİ PORSELENLERDE MİKROSIZ1NTI-M/ CHOLEA KA C E STUDY OF PORCELAIN FUSED TO METAL ALLOYS

Ozet Calismada metal destekli porselen ara yuzeyinde mikrosizinti incelenmistir. Bunun icin krom-kobalt, krom-nikel ve titanyum alasimlarindan 1 cm capinda, lmm metal kalinligi ve 1.2 mm porselen kalinligi olan 20ser adet ornek hazirlanmistir. Sizinti belirlemesinde oto-radyografi yontemi kullanilmistir. Her alasim grubundaki ornekler suda beklemis ve beklememis olmak uzere ikiye ayrilmistir. Calismanin sonucunda suda beklemis ve beklememis orneklerin sizintilari arasinda onemsiz fark oldugu bulunmustur. En fazla sizinti krom-kobalt destekli porselen orneklerde gozlenmistir. Krom-nikel ve titanyum destekli porselen ornekler arasinda ise mikrosizinti farki onemsiz bulunmustur. Anahtar sozcukler: Mikrosizinti, metal destekli dorse-len. Abstract The present article reports a study of microleakage in the interface between various metal alloys and porcelain. In this study chrome-nickel, chrome-cobalt and titanium alloys were investigated. Microleakage specimen were prepared in the shape of 2.2 mm thick disks which were 1 cm in diameter. Our findings showed similar microleakage in specimen stored in water and those not stored in water. The results indicated that microleakage at porcelain fused to chrome-cobalt alloy was greater than that found for hie other two alloys. No significant differences werefound between the microleakage at the interface of porcelain fused to titanium and porcelain fused to chrome-nickel alloy. Key words: Microleakage, porcelain fused to metal alloys.