An evaluation of changes in mandibular anterior alignment f!om
نویسنده
چکیده
Pretreatment, end of treatment, IO-year postretention, and 20-year postretention records of 31 four premolar extraction cases were assessed to evaluate stability and relapse of mandibular anterior alignment. Crowding continued to increase during the loto 20-year postretention phase but to a lesser degree than from the end of retention to 10 years postretention. Only 10% of the cases were judged to have clinically acceptable mandibular alignment at the last stage of diagnostic records. Cases responded in a diverse unpredictable manner with no apparent predictors of future success when considering pretreatment records or the treated results. (AM J ORTHOD DENTOFAC OATHOP 1988;93:423-8.)
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