9KL Theroux. A new vacuum-formed phase I retainer[J]. J Clin Orthod,2003,37(7) :384-387. 被引量:1
10L Hichens, H Rowland, A Williams,et al. Cost-effictiveness and patient satisfaction: Hawley and vacuum- formed retainers[J]. Eur J Orthod. 2007,29(4):372- 378. 被引量:1