Comparison of Extraction and Non-extraction Orthodontic Treatment using the Objective Grading System
Statement of Problem: The extraction versus non-extraction debate is almost as old as the advent of orthodontic practice and up to now, this dilemma remains. Recently, the American Board of Orthodontics (ABO) has developed a method by the name of Objective Grading System (OGS) in order to evaluate t...
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| Main Authors: | , , |
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| Format: | Book |
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Tehran University of Medical Sciences,
2005-09-01T00:00:00Z.
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