Journal Article

Long-term follow-up of maxillary incisors with sever apical root resorption

E Levander and O Malmgren

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 22, issue 1, pages 85-92
Published in print February 2000 | ISSN: 0141-5387
Published online February 2000 | e-ISSN: 1460-2210 | DOI: https://dx.doi.org/10.1093/ejo/22.1.85
Long-term follow-up of maxillary incisors with sever apical root resorption

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The purpose of the study was to analyse the mobility of teeth with severe orthodontically induced root resorption, at follow-up several years after active treatment, and to evaluate mobility in relation to root length and alveolar bone support. Seventy-three maxillary incisors were examined in 20 patients, 10-15 years after active treatment in 13 patients (age 24-32 years) and 5-10 years after active treatment in seven patients (age 20-25 years). All had worn fixed or removable retainers; seven still had bonded twistflex retainers. Total root length and intra-alveolar root length were measured on intra-oral radiographs. Tooth mobility was assessed clinically according to Miller's index (0-4) and the Periotest method. Crestal alveolar bone level, periodontal pocket depth, gingival, and plaque indices, occlusal contacts during occlusion and function, and dental wear were recorded.

There was a significant correlation (P<0.05) between tooth mobility, and total root length and intra-alveolar root length. No correlation was found between tooth mobility and retention with twistflex retainers. None of the variables for assessment of periodontal status, occlusion and function were related to total root length or tooth mobility. It is concluded that there is a risk of tooth mobility in a maxillary incisor that undergoes severe root resorption during orthodontic treatment, if the remaining total root length is ≤9 mm. The risk is less if the remaining root length is >9 mm. Follow-up of teeth with severe orthodontically induced root resorption is indicated.

Journal Article.  0 words. 

Subjects: Restorative Dentistry and Orthodontics

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