1Bussick TJ, McNamara JA. Dentoalvelar and skeletal changes associated with the pendulum appliance [J]. Am J Orthod Dentofacial Orthop, 2000, 117(3) :333-343.
2Hilgers JJ. The pendulum appliance for class Ⅱ non- comliance therapy[J]. J Clin Orthod, 1992, 26(11):706-714.
3Ghosh J, Nanda RS. Evaluation of an intraoral maxillary molar distalization technique[J]. Am J Orthod Dentofacial Orthop, 1996, 110(6):639-646.
4Byloff FK, Darendeliler MA. Distal molar movement using the pendulum appliance. Part 1:clinical and radiological evaluation[J]. Angle Orthod, 1997,67(4):249-260.
5Gianelly AA, Vaitas AS, Thomas WM, et al. Distalization of molars with repelling magnets[J]. J Clin Orthod, 1988,22(1):40-44.
6Reiver TJ. Modified Nance appliance for unilateral molar dis-talization [J]. J Clin Orthod, 1992,26(7):402-404.
7Bondemark L, Kurol J. Distalization of maxillary first and second molars simultaneously with repelling magnets[J]. Eur J Orthod, 1992, 64:272.