Naslov
Ispitivanje hrapavosti površine glazirane Y-TZP zubne keramike nakon izlaganja korozivnom mediju
(Investigation of Glazed Y-TZP Dental Ceramics Corrosion by Surface Roughness Measurement)

Autori
Štefančić, Sanja ; Ćurković, Lidija ; Baršić, Gorana ; Majić Renjo, Marijana ; Mehulić, Ketij

Izvornik
Acta stomatologica Croatica (0001-7019) 47 (2013), 2; 163-168

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, prethodno priopćenje, znanstveni

Ključne riječi
dental porcelain ; surface properties ; corrosion

Sažetak
Introduction: Among dental applications, the zirconia based ceramics are widespread because of their general properties. The changes in superficial surface roughness correspond to the structural changes in the material caused by the influence of corrosion. The aim of this study was to determine chemical stability of glazed Y-TZP using surface roughness measurements. Materials and methods: Five samples of Y-TZP material BruxZir (Glidewell Laboratories © 2012.) with the addition of pigment A3 were sintered, polished and glazed to imitate the finishing process in producing monolithic crowns. After determining the mass of the sample, each sample was immersed in 10 ml of 4 wt. % CH3COOH aqueous solution. The roughness was measured five times before and after immersion. Results: All measured roughness parameters have significantly increased, showing higher penetration depth in all surface areas after immersion in 4 wt. % CH3COOH aqueous solution compared to the initial values. Weight loss of investigated dental ceramics samples was 2.45 mg/cm2 ± 0.026. Conclusion: Highly acidic conditions augment surface roughness of Y-TZP glazed dental ceramics.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Strojarstvo, Dentalna medicina

POVEZANOST RADA