Treatment of children with ectopic eruption of the maxillary first permanent molar by cervical traction

American Journal of Orthodontics - Tập 86 - Trang 483-492 - 1984
Ju¨ri Kurol1, Krister Bjerklin1
1From the Department of Orthodontics, The Institute for Postgraduate Dental Education Jo¨nko¨ping, Sweden

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