错牙合
牙列
臼齿
口腔正畸科
牙科
医学
拱门
空格(标点符号)
恒牙
下颌弓
计算机科学
工程类
操作系统
土木工程
作者
Thomas Simon,Ifechide Nwabueze,Hassan Oueis,James Stenger
出处
期刊:The Journal of the Michigan Dental Association
日期:2012-01-01
卷期号:94 (1): 38-40
被引量:7
摘要
Loss of space in the primary dentition is considered one of the main causes of malocclusion in the permanent dentition. The purpose of this paper is to review ond summarize the indications and use of space maintainers in primary and mixed dentitions as preventive measures of future malocclusion. Two main types of space maintainers are used to maintain the space in primary ond mixed dentitions: fixed and removable appliances. Band and loop is the appliance of choice when a primary maxillary or mandibular first molar is prematurely lost. With the premature loss of a second primary molar, Nance or transpalatal (TPA) appliances can be used on the maxillary arch and the lower lingual holding arch (LLHA) for the mandibular arch.
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