Coating and Surface Treatments on Orthodontic Metallic Materials

Abstract

Metallic biomaterials have been extensively used in orthodontics throughout history. Gold, stainless steel, cobalt-chromium alloys, titanium and its alloys, among other metallic biomaterials, have been part of the orthodontic armamentarium since the twentieth century. Metals and alloys possess outstanding properties and offer numerous possibilities for the fabrication of orthodontic devices such as brackets, wires, bands, ligatures, among others. However, these materials have drawbacks that can present problems for the orthodontist. Poor friction control, allergic reactions, and metal ionic release are some of the most common disadvantages found when using metallic alloys for manufacturing orthodontic appliances. In order to overcome such weaknesses, research has been conducted aiming at different approaches, such as coatings and surface treatments, which have been developed to render these materials more suitable for orthodontic applications. The purpose of this paper is to provide an overview of the coating and surface treatment methods performed on metallic biomaterials used in orthodontics.

Evaluation of Static Friction of Polycrystalline Ceramic Brackets after Conditioning with Different Powers of Er:YAG Laser

“…Friction control is a major challenge in orthodontic treatment since a part of the applied force is dissipated to overcome friction [ 13 ]. In this study we aimed to reduce the frictional force between ceramic brackets and wires by irradiation of Er:YAG laser beams on ceramic brackets.…”

Functional Coatings for Orthodontic Archwires—A Review

“…Nevertheless, some problems with coatings have been observed, mainly wear of the coating and its delamination. Investigations are continuing to find appropriate materials and techniques with the objective of improving the properties of metallic biomaterials [ 34 ].…”

Enhancement of the Corrosion Resistance of 304 Stainless Steel by Cr–N and Cr(N,O) Coatings

“…For the past decades, material science has emerged as one of the major scientific fields aiming at the improvement of the physical and chemical properties of materials, taking their projected purpose into consideration. The stainless steel (SS) family represents one of the most utilized alloys, being used in a wide range of applications, such as cutting tools, convenient support in biomedicine, rotor blades of gas turbines, aircraft parts, automobiles, pipelines, and naval vessels [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The selection of the specific SS to be used in a certain application is done considering the economic aspects as well as its physical and chemical properties.…”