4Vardimon AD, Lambertz W. Statistical evaluation of troque angles in reference to straight-wire appliance (SWA)theofies [J] Am J Orthod, 1986, 89 (1) : 56-66.
5小板肇.平直弓矫治技术[M].广州:世界图书出版公司广州公司,2003.56-92.
6Alexander RG. The vari-simplex discipline. Part 1 : Concept and appliance design[J]. J Clin Orthod, 1983, 17 (6):380-392.
7McLaughlin R P, Bennett J C, Trevisi H J. Systemized orthodontic treatment meachanics[M]. St louis: mosby, 2001.7-70.
8Ricketts RM. Bioprogressive therapy as an answer to orthodontic needs. Part 1[J]. Am J Orthod, 1976,70(3) :241-268.