International journal of orthodontics 2015
Closure of large midline diastema by a "HIV-Spring".
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概要
Midline diastema is a common orthodontic problem in mixed dentition caused by various factors like genetic, supernumery teeth, abnormal frenum attachment, habits and microdontia etc. Large diastemas need closure for the eruption of adjacent teeth. I present here a newly designed customized self active HIV-Spring (Hari Inverted 'V' Spring) for closing a large diastema with minimum orthodontic materials and less activation visits. The spring can be modfied for the three dimensional movement of central incisors.