Lewin, A.2016-03-032016-03-031970Lewin, A. 1970. The direction of tooth movement within the periodontal space. The omnidirectional transducer. Journal of the dental association of South Africa;25(9):308-14http://hdl.handle.net/10539/19564KIMenDentistryPeriodontiumTooth MobilityTransducersThe direction of tooth movement within the periodontal space. The omnidirectional transducerArticle