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Effects of sandblasting and electrical discharge machining on porcelain adherence to cast and machined commercially pure titanium
Author(s) -
İnan Özgür,
Acar Aslı,
Halkacı Selçuk
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30500
Subject(s) - materials science , titanium , scanning electron microscope , nichrome , adhesion , metallurgy , significant difference , composite material , titanium alloy , machining , alloy , medicine
The aim of this study was to determine the effect of sandblasting and electrical discharge machining (EDM) on cast and machined titanium surfaces and titanium–porcelain adhesion. Twenty machined titanium specimens were prepared by manufacturer (groups 1 and 2). Thirty specimens were prepared with autopolymerizing acrylic resin. Twenty of these specimens (groups 3 and 4) were cast with commercially pure titanium and the α‐case layer was removed. For control group (group 5), 10 specimens were cast by using NiCr alloy. Groups 2 and 4 were subjected to EDM while groups 1, 3, and 5 were subjected to sandblasting. Surface examinations were made by using a scanning electron microscope (SEM). A low‐fusing porcelain was fused on the titanium surfaces, whereas NiCr specimens were covered using a conventional porcelain. Titanium–porcelain adhesion was characterized by a 3‐point bending test. Results were analyzed by Kruskal–Wallis and Mann–Whitney U tests. Metal–porcelain interfaces were characterized by SEM. The bond strength of control group was higher than that of the titanium–porcelain system. There was no significant difference between cast and machined titanium groups ( p > 0.05). There was no significant difference between EDM and sandblasting processes ( p > 0.05). The use of EDM as surface treatment did not improve titanium–porcelain adhesion compared with sandblasting. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006