Influence of surface airborne-particle abrasion and bonding agent application on porcelain bonding to titanium dental alloys fabricated by milling and by selective laser melting.
Journal
The Journal of prosthetic dentistry
ISSN: 1097-6841
Titre abrégé: J Prosthet Dent
Pays: United States
ID NLM: 0376364
Informations de publication
Date de publication:
Mar 2020
Mar 2020
Historique:
received:
15
08
2018
revised:
24
02
2019
accepted:
25
02
2019
pubmed:
17
7
2019
medline:
4
3
2020
entrez:
17
7
2019
Statut:
ppublish
Résumé
Computer-aided design and computer-aided manufacturing (CAD-CAM) technologies have provided alternatives to lost-wax casting for the fabrication of titanium frameworks in metal-ceramic fixed dental prostheses (FDPs). The findings on varying metal surface characteristics resulting from application of different fabrication technologies indicate a need to reevaluate the traditional titanium surface conditioning protocols. The purpose of this in vitro study was to investigate the effects of surface airborne-particle abrasion (APA) and bonding agent application on the porcelain bond to titanium dental alloys fabricated by subtractive computer numerical controlled (CNC) milling and by additive selective laser melting (SLM) methods. Eight groups of Ti-6Al-4V substrates (n=11) were fabricated-half of them by CNC milling and half by SLM. The groups represented a fully crossed experimental protocol of APA with 110-μm Al The method applied for the digital fabrication of titanium (either subtractive CNC milling or additive SLM) did not affect the titanium-ceramic bond (P=.247). APA (P<.001), as well as the application of a bonding agent (P<.001), increased the titanium-ceramic bond strength. When these 2 procedures were combined, the porcelain bond strength to CNC milled titanium was 37.3 ±4.1 MPa and that to SLM titanium was 36.7 ±4.9 MPa. APA increased the surface roughness of CNC milled titanium (P=.002) but decreased the roughness of the SLM substrates (P<.001). A protocol comprising APA and application of a bonding agent ensures the highest porcelain bond strength to both CNC milled and SLM titanium, with the obtained values being well above the minimal value for metal-ceramic systems as specified by ISO 9693-1:2012.
Identifiants
pubmed: 31307799
pii: S0022-3913(19)30204-5
doi: 10.1016/j.prosdent.2019.02.011
pii:
doi:
Substances chimiques
Dental Alloys
0
Metal Ceramic Alloys
0
Dental Porcelain
12001-21-7
Titanium
D1JT611TNE
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
491-499Informations de copyright
Copyright © 2019 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.