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Pre-oxidation of selective-laser-melted titanium dental alloy : effects on surface characteristics and porcelain bonding
ID
Antanasova, Maja
(
Avtor
),
ID
Kocjan, Andraž
(
Avtor
),
ID
Abram, Anže
(
Avtor
),
ID
Kovač, Janez
(
Avtor
),
ID
Jevnikar, Peter
(
Avtor
)
PDF - Predstavitvena datoteka,
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(2,60 MB)
MD5: 5C5114D6A8683792654BED8EFEED6134
URL - Izvorni URL, za dostop obiščite
https://www.tandfonline.com/doi/full/10.1080/01694243.2021.1877003
Galerija slik
Izvleček
The heat treatment of dental alloys prior to porcelain application/veneering has been proposed as a way to ensure sufficient oxide scale and to promote the porcelain's adherence in porcelain-fused-to-metal (PFM) fixed dental prostheses. The present study investigates the relationship between the bond strength of the dental porcelain to selective-laser-melted (SLM) titanium and the temperature of the titanium's pre-oxidation. The SLM Ti-6Al-4V substrates were airborne-particle abraded and either left to passivate in air at room temperature (control) or pre-oxidized in a furnace under vacuum conditions (10kPa) at temperatures of 300, 600, 750, or 800 °C. The surface characteristics were determined using contact profilometry to measure the profile roughness (R$_a$), atomic force microscopy for the surface roughness (S$_a$) and Auger electron spectroscopy for the thickness of the oxide scale. Dental porcelain was applied to the metal substrates and the titanium-ceramic bond was assessed according to the ISO standard 9693-1:2012. The metal-ceramic interfaces were analyzed with scanning electron microscopy and energy-dispersive spectroscopy. The R$_a$ and S$_a$ values showed a strong positive correlation with the pre-oxidation temperature. The oxide scales covering the titanium surfaces thickened markedly at temperatures of 750 °C and above. However, the bond strength was negatively correlated with the pre-oxidation temperature. Room-temperature passivation in air following the airborne-particle abrasion of the SLM titanium resulted in a titanium-ceramic bond that is well above the ISO 9693-1:2012 recommended minimum value for metal-ceramic systems. Thus, no pre-oxidation of SLM titanium frameworks is necessary prior to the application/firing of porcelain.
Jezik:
Angleški jezik
Ključne besede:
prosthetic dentistry
,
bond strength
,
titanium
,
metal-ceramic
,
selective laser melting
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
MF - Medicinska fakulteta
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
Str. 2094-2109
Številčenje:
Vol. 35, no. 19
PID:
20.500.12556/RUL-141219
UDK:
616.31
ISSN pri članku:
0169-4243
DOI:
10.1080/01694243.2021.1877003
COBISS.SI-ID:
50192131
Datum objave v RUL:
26.09.2022
Število ogledov:
569
Število prenosov:
67
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Objavi na:
Gradivo je del revije
Naslov:
Journal of adhesion science and technology
Skrajšan naslov:
J. adhes. sci. technol.
Založnik:
Taylor & Francis
ISSN:
0169-4243
COBISS.SI-ID:
34942720
Licence
Licenca:
CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:
Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
protetično zobozdravstvo
,
trdnost vezi
,
titan
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0087
Naslov:
Keramični in komplementarni materiali za napredne inženirske in biomedicinske aplikacije
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