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- W2355232897 abstract "Objective: The purpose of this investigation was to assess the vertical changes occurring in skeletal open bite patients treated orthodontically with mandibular first molar extractions. Method: The study was conducted using lateral cephalometric radiographs taken before and after treatment. Fourteen patients who had Ⅱ°or Ⅲ°skeletal open bite extending to the second premolar or first molar were treated orthodontically with mandibular first molar extractions. The differences between the pre and post-treatment periods were analyzed to evaluate the vertical changes occurring as a result of orthodontic treatment. Result:After active treatment,SN-MP angle decreased (3.83±1.12)° and SN-OP angle decreased (6.30±2.54)°(P0.05),there was no significant change in SN-PP angle. UI-PP(mm) and LI-MP(mm) increased (1.63±0.52)mm and (4.05±1.74)mm respectively(P0.05), but the change of UM-PP(mm)、LM-MP(mm)、Na-ANS(mm)、ANS-Me(mm)、S-Go(mm)、ANS-Me/Na-Me% or S-Go/Na-Me% was no significant. Conclusion: These results suggest that the extraction of the mandibular first molars led to a closing rotation of the mandible in subjects with a skeletal open bite and incisors were significantly elongated during treatment period." @default.
- W2355232897 created "2016-06-24" @default.
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- W2355232897 date "2008-01-01" @default.
- W2355232897 modified "2023-09-23" @default.
- W2355232897 title "Vertical changes in skeletal open bite subjects treated orthodontically following mandibular first molar extractions" @default.
- W2355232897 hasPublicationYear "2008" @default.
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