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KMID : 0361919740040010041
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Korean Journal of Orthodontics
1974 Volume.4 No. 1 p.41 ~ p.48
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MODEL ANALYSIS IN ORTHODONTIC TREATMENT CHANCES OF THE MAXILLARY DENTAL ARCH
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Lee Won-Chul
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Abstract
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The author has selected 70 non-extraction and extraction cases. The linear measurements were made in the maxillary dental cast at pre-and post-treatment. The purpose of this study was to detect out the changes occured during orthodontic treatment. On the basis of findings of this study, the following results are made: 1. In extraction cases: 1) The maxillary intercanine width increased. 2) The maxillary dental arch width decreased. 3) The maxillary inter first molar width decreased. 4) The maxillary dental arch length decreased. 5) The maxillary dental arch length (I-3) increased. 2. In non-extraction cases, the maxillary intercanine width decreased in Angle’’s class III.
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