Effect of orthodontic treatment with 4 premolar extractions compared with nonextraction treatment on the vertical dimension of the face: A systematic review

Georgios Kouvelis,Konstantinos Dritsas,Ioannis Doulis,Dimitrios Kloukos,Nikolaos Gkantidis

American Journal of Orthodontics and Dentofacial Orthopedics（2018）

引用 33|浏览4

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摘要

•Fourteen retrospective controlled studies were included in this systematic review.•Risk of bias ranged from moderate to critical.•There is no specific effect of premolar extractions on the vertical dimension.

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