Using Little's Irregularity Index in orthodontics: outdated and inaccurate?
AffiliationOrthodontics Unit, Division of Public and Child Dental Health, Dublin Dental University Hospital, School of Dental Science, Trinity College Dublin, Dublin 2, Ireland.
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CitationUsing Little's Irregularity Index in orthodontics: outdated and inaccurate? 2012, 40 (12):1127-33 J Dent
JournalJournal of dentistry
AbstractLittle's Irregularity Index (LII) was devised to objectively score mandibular incisor alignment for epidemiological studies but has been extended to assess the relative performance of orthodontic brackets, retainer or treatment modalities. Our aim was to examine the repeatability and precision of LII measurements of four independent examiners on the maxillary arch of orthodontic patients. The hypothesis was that the reproducibility of individual contact point displacement measurements, used to calculate the LII score, are inappropriate.
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