Niobij v restavrativnem zobozdravstvu

The application of metal dental restorations in oral prosthetics has become very widespread and popular. Due to the complexity of the intraoral environment, it has been the focus of research to improve the mechanical and chemical properties, especially the corrosion resistance, to increase the durability of restorations under the premise of ensuring the good biocompatibility of the materials.Haoka et al. tested the electrochemical properties of niobium-containing magnetic attachments, and the results showed that compared with the traditional magnetic attachments, the magnetic attachments made of Pt-30.0mass%Fe-0.6mass%Nb alloys had better corrosion resistance.Lee et al. tested the electrochemical properties of titanium-niobium alloys. Lee et al. tested the structural properties of titanium-niobium alloys and showed that Ti-10Nb and Ti-27.5Nb alloys had the highest strength, while Ot' phase-dominated (17.5Nb, 20Nb) alloys and B-phase-dominated alloys (>30Nb) je imel najnižji modul elastičnosti. . Poleg tega so vse zlitine titana in niobija, vključene v teste, pokazale odlično odpornost proti koroziji.

Kikuchi et al. testirali mehanske lastnosti litih titan-niobijevih zlitin, ki vsebujejo različno specifično težo niobija, in rezultati so pokazali, da se je trdota titanovih zlitin, ki vsebujejo 5 mas.% niobija, znatno povečala; titanove zlitine, ki vsebujejo 10 mas.% niobija in več, so pokazale znatno povečano tečenje in natezno trdnost, medtem ko se je raztezek znatno zmanjšal; titanove zlitine, ki vsebujejo 30 mas.% niobija, so pokazale boljše abrazivne lastnosti, medtem ko so ohranile večjo trdoto, trdnost in modul elastičnosti. Študija Hu Xin et al. je tudi potrdilo, da je zlitina titana, cirkonija, niobija in kositra z visoko trdnostjo in visokim modulom elastičnosti kovinski material z dobro biološko varnostjo za ustne restavracije, vendar se obrabni mehanizem spreminja od abrazivne do adhezivne obrabe s povečanjem površinske obremenitve.