Evaluation of torque moment in a novel elastic bendable orthodontic wire
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- KURODA Shingo
- Department of Orthodontics and Dentofacial Orthopedics, The University of Tokushima Graduate School, Institute of Health Biosciences
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- WATANABE Hiroto
- Department of Orthodontics, Nihon University School of Dentistry
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- NAKAJIMA Akira
- Department of Orthodontics, Nihon University School of Dentistry
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- SHIMIZU Noriyoshi
- Department of Orthodontics, Nihon University School of Dentistry
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- TANAKA Eiji
- Department of Orthodontics and Dentofacial Orthopedics, The University of Tokushima Graduate School, Institute of Health Biosciences
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抄録
The objective of the study was to measure the torque moment delivered by a novel elastic bendable wire, Ti-Nb wire, and to compare it with nickel-titanium (Ni-Ti) and titanium-molybdenum (Ti-Mo) alloy wires. Two sizes of Ti-Nb, Ni-Ti and Ti-Mo alloy wires and 0.022-inch slot stainless steel brackets were ligated with elastic modules or ligature wires. The torque moment delivered by the various wire-bracket combinations was measured using a torque gauge at the temperature and humidity of 37°C and 50%, respectively. As the degree of applied torque and the inserted wire size increased, the torque moment gradually increased. The torque moment of Ti-Nb wires was smaller than those of Ni-Ti wires and Ti-Mo wires, at more than 20 degrees applied torque. The torque moment with wire ligation was significantly larger than those with elastic ligation.
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 33 (3), 363-367, 2014
一般社団法人 日本歯科理工学会