Dental Alloys and Corrosion Resistance

Metali i njihove slitine neizostavni su materijali u svakodnevnoj stomatološkoj uporabi za izradbu ispuna, nadogradnji, samostalnih krunica, mostova, suprastruktura implantata, proteza, i ortodontskih uređaja. Ugrađeni materijali u usnoj šupljini dugotrajno su izloženi funkcionalnim, biokemijskim i mikrobnim utjecajima specifičnog usnog miljea koji mogu negativno djelovati na terapeutski rad ili okolno tkivo. Otpornost na koroziju preduvjet je za biokompatibilitet. Zbog ekonomskih razloga sve se rjeđe ugrađuju plemenite slitine, otporne na koroziju, a tržište nudi neplemenite slitine. Budući da je stomatolog odgovoran za izbor ugrađene slitine, prije ugradnje potrebno je predvidjeti kako će slina, kao agresivni medij, utjecati na slitinu. Na temelju pregleda literature, u ovom se je radu željelo dati pregled postojećih zubnih slitina s obzirom na njihova antikorozivna svojstva i time pomoći stomatologu prigodom njihova izbora.Metals and their alloys are unavoidable materials in everyday dental use for the making of fillings, cast cores and post systems, individual crowns, implantants’ suprastructures, dentures and orthodontic devices. Materials implanted in the mouth are exposed over a long period of time to functional, biochemical and bacterial influences of a mouth media which can have a negative impact on a very therapeutic work or surrounding tissue. Corrosive resistance is a prerequisite for biocompatibility. Due to economic reasons, corrosive resistant precious metals have been used less frequently, while the non precious alloys appear on the market. Since a dentist is responsible for a choice of implanted metal, prior to implantation it is important to foresee the impact of saliva as an aggressive media on a metal or alloy. Based on studying different literature, the purpose of this work was to give and overview of the existing dental metals and alloys in contexts with their anticorrosive characteristics, and that way to help a dentist in making a right choice