Journal Article

Mandibular incisor extraction: indications and long-term evaluation

Jose-Antonio Canut

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 18, issue 5, pages 485-489
Published in print October 1996 | ISSN: 0141-5387
e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/18.5.485
Mandibular incisor extraction: indications and long-term evaluation

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The extraction of a lower incisor constitutes a therapeutic alternative limited to certain occlusal situations, i.e. supernumerary incisors, tooth size anomalies (peg-shaped upper laterals), ectopic eruption and anterior crossbites. The effect of the extraction of a single incisor on the out of retention alignment of lower anterior teeth was studied in 26 treated cases. Initial (T1), final (T2) and 5–8 years out of retention (T3) dental casts were measured. Mean crowding at the start of treatment (T1=3.86 mm) relapsed out of retention (T3=1.49 mm), with a net mean improvement of 2.37 mm. Little's irregularity index at the start of treatment (T1=6.44) relapsed out of retention (T3=2.53), with a net mean improvement of T1−T3=3.91. Alignment stability seems to be better than that achieved in cases subjected to premolar extraction.

Journal Article.  0 words. 

Subjects: Restorative Dentistry and Orthodontics

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