Effect of orthodontic treatment with 4 premolar extractions compared with nonextraction treatment on the vertical dimension of the face: A systematic review
American Journal of Orthodontics and Dentofacial Orthopedics(2018)
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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