臼齿
错牙合
拥挤
口腔正畸科
牙科
医学
萃取(化学)
下颌第一磨牙
心理学
色谱法
神经科学
化学
作者
Erika Nicole Chua,A. Sumathi Felicita
出处
期刊:Australasian Orthodontic Journal
[Exeley, Inc.]
日期:2015-01-01
卷期号:31 (1): 69-77
被引量:2
标识
DOI:10.21307/aoj-2020-142
摘要
Abstract The most common cause of dental crowding is the presence of an arch-length – tooth-size discrepancy. Conventional methods of gaining space in orthodontics involve the extraction of teeth, often premolars. However, there are a number of clinical situations in which the extraction of permanent molars might be considered. This paper highlights the indications, advantages, disadvantages and timing of the extraction of the first, second and third permanent molars in the treatment of a crowded malocclusion.
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