Studies of resistance micro-welding modes for dentistry applications
About authors
- 1 — postgraduate student Saint Petersburg State Mining Institute (Technical University)
- 2 — Ph.D., Dr.Sci. professor Saint Petersburg State Mining Institute (Technical University)
Abstract
Various modes of resistance welding between steel and Ni-Ti-extracting electrodes and fractures of endodontic files were investigated. It was demonstrated that in close to real clinical situations there is most suitable a sequence of a number of pulses of a steepened welding current. As a result, detachment force limit of 15-50 N is achievable which is sufficient for the fracture extraction in most cases.
Keywords:
extraction of fractured endodontic instruments from a tooth root canal
resistance micro-welding
References
- Александровский В.Л. Извлечение отломков стальных эндодонтических инструментов с помощью нового электронного прибора-экстрактора / В.Л.Александровский, А.Б.Цыганов // Клиническая эндодонтия. 2007. Т.1. № 1-2. С.92-95.
- Белоглазов И.Н. Технология производства Ni-Тi-электродов для извлечения обломков эндодонтических инструментов из корневого канала зуба / И.Н.Белоглазов, А.С.Мустафаев, А.Б.Цыганов, А.С.Чирцов // Цветные металлы. 2009. № 3. С.42-45.
- Пат. 2257868 РФ. Способ извлечения обломка инструмента из корневого канала зуба и экстрактор для его осуществления / В.Л.Александровский, А.Б.Цыганов. Опубл. 10.08.05. Бюл. № 22.
- Di Fiore P.M. Nickel-titanium rotary instrument fracture: a clinical practice assessment / P.M.Di Fiore, K.A.Genov, E.Komaroff, Y.Li, L.Lin // International. Endodontics Journal, 2006. Vol.39. Issue 9. P.700-708.
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