Development of a new open “C”-shaped molar band with nanomaterial / 中国组织工程研究

ABSTRACT

BACKGROUND:In the field of orthodontics, molar bands play an important role. But traditional bands have some weakness difficult to be solved in clinical use, for example, trying on cumbersomely, having to separate the adjacent teeth beforehand, occupying bigger space and tending to cause periodontitis of molars with bands. So some clinicians use a buccal tube instead of the molar band, but it has relatively high losing rate and cannot be fixed with Transpalatal Arch and Nance. OBJECTIVE: To invent a new open “C”-shaped molar band with nanomaterial (patent number ZL201110057699.1) to solve the above problems as a common molar appliance. METHODS: We made some stainless steel strips of 0.18-0.20 mm thickness and a certain length. The stainless steel strips were made to the new bands composed of buccal, lingal, distal surface and bilateral extention caused by removable parts extending to mesial surface. In order to improve retention force, its inner surface was coated by nano-hydroxyapatite and it bound to the molar crown by resin reinforced glass ionomer cements in clinical use. RESULTS AND CONCLUSION: The new open “C”-shaped molar band with nanomaterial overcomes shortcomings of conventional band and buccal tube. From the design, in contrast with traditional band, it not only has no need to separate teeth beforehand and to try on repeatedly, but also less stimulates periodontal tissues. So the new band can be more suitable for clinical use.