Stainless Steel Brackets: <i>In Vitro</i> Corrosion Behaviour and Mechanical Debonding Test

Abstract

The purpose of the study was to investigate the microchemical, morphological, mechanical and anticorrosive characteristics of the metallic brackets by using energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), electrochemical and shear tests. The changes resulted from the exposure of the metallic brackets to artificial saliva and debonding forces were investigated under orthodontic appliances. The results have shown that metallic brackets studied in this paper present a good design, great electrochemical behaviour in artificial saliva for different pH values (2, 5 and 7), and also great mechanical properties. In the case of shear stress the obtained values were higher than the clinical accepted value. The metallic brackets studied in this paper present a good behaviour in artificial saliva, and good mechanical characteristics. The ARI investigation revealed that most of the adhesive was left on the bracket.

Porous Metallic Biomaterials Processing (Review) Part 1: Compaction, Sintering Behavior, Properties and Medical Applications

“…Metallic biomaterials such as stainless steel, magnesium, tantalum, titanium etc, have been widely used in many medical applications [1][2][3][4][5][6][7][8][9] for their good biocompatibility, good electrical conductivity, high strain energy (toughness), good wear resistance and outstanding combination of strength and ductility, compared with other materials. In terms of corrosion resistance, the most used metallic biomaterials are 316L stainless steel, Co-based alloys, and Ti-based alloy.…”

“…In terms of corrosion resistance, the most used metallic biomaterials are 316L stainless steel, Co-based alloys, and Ti-based alloy. Recent studies have shown that Zr-based alloys could be used as potential material for implants [2][3][4][5][6][7][8][9][10][11]. These characteristics along with relatively simple and common fabrication techniques (casting, forging, machining), or alternative conventional/advanced Powder Metallurgy techniques make metallic biomaterials suitable candidates for medical applications.…”

“…), as porous scaffolds or neuro-vascular implants (aneurysm-clips). In the last years, biodegradable materials based on Mg, Fe or Zn for temporary implants such as stents and orthopedic fixation elements were also developed [1][2][3][4][5][6][7][8][9][10][11]. In Figure 1, the most used metallic biomaterials in the medical field are presented.…”