7REITAN K.Principles of retention and avoidance of posttreatment relapse[J].Am J Orthod,2004,55(7):776-790.
8LANG G,ALFTER G,GOZ G,et al.Retention and stability--taking various treatment parameters into account[J].J Orofac Orthop,2002,63(1):26-41.
9Erden RG, Scutt AM, Miao D, et al. Short - term treatment of rats with high dose 1,25 - dihydroxyvitamin D3 stimulates bone formation and increase the number of osteoclast precursor cells in bone marrow [ J ]. Endocrinology, 1997, 138:4629 - 4635
10Lidor C, Dekel S, Meyer MS, et al. Biochemical and biomechanical properties of avian callus after local administration of dihydroxylated vitamin D metabolites [J]. J Bone Joint Surg Br, 1990, 72 : 137 - 140