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  • Title: An evaluation of changes in mandibular anterior alignment from 10 to 20 years postretention.
    Author: Little RM, Riedel RA, Artun J.
    Journal: Am J Orthod Dentofacial Orthop; 1988 May; 93(5):423-8. PubMed ID: 3163221.
    Abstract:
    Pretreatment, end of treatment, 10-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 10- to 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.
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