Choonara S A
Dept of Orthodontics, University of Pretoria.
SADJ. 2005 Apr;60(3):113, 115-7.
Crowding and a lack of space in the permanent dentition are amongst the most common orthodontic problems encountered in orthodontic patients. Often the aetiology of these problems is linked to premature loss of one or more deciduous teeth with corresponding loss of space. Many of these cases could have been prevented or their severity alleviated if the practitioner employed adequate planning and space maintenance during initial treatment in the mixed dentition. A review of some of the current orthodontic space maintenance appliances and their indications is presented along with a table to aid the practitioner in treatment planning.
恒牙列拥挤和空间不足是正畸患者中最常见的正畸问题。这些问题的病因通常与一颗或多颗乳牙过早脱落以及相应的间隙丧失有关。如果从业者在混合牙列的初始治疗期间采用适当的计划和间隙保持措施，许多此类情况本可预防或减轻其严重程度。本文介绍了一些当前的正畸间隙保持器及其适应证，并附有一个表格，以帮助从业者进行治疗计划。
