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Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie

Published in:

01-01-2020 | Original Article

External apical root resorption after nonextraction orthodontic treatment with labial vs. lingual fixed appliances

Authors: Dr. Hande Pamukçu, Ömür Polat-Özsoy, Ayşe Gülşahi, Mehmet Özgür Özemre

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Issue 1/2020

Abstract

Objectives

The aim of this retrospective study is to compare external apical root resorption (EARR) after labial and lingual fixed orthodontic treatment, as detected with panoramic radiographs.

Materials and methods

Sixty subjects were divided into two groups according to the treatment type: lingual (30 patients) and labial (30 patients) fixed orthodontic treatment. Panoramic radiographs which were obtained at the beginning of treatment (T0) and at the end of the treatment (T1) were evaluated. The maxillary and mandibular central and lateral incisors, as well as canine crown and root lengths were measured for T0 and T1. Crown to root ratios were used to determine EARR. Data were evaluated using analysis of variance and χ² analysis.

Results

In all, 5 patients (16.7%) in the lingual group and 7 patients (23.3%) in the labial group had a minimum of one tooth with severe EARR, while 9 patients (30%) in the lingual group and 14 patients (46.7%) in the labial group had no EARR. A total of 26 teeth (7.2%) in the lingual group and 34 teeth (9.4%) in the labial group developed severe EARR; however, 184 teeth (51.1%) in the lingual group and 202 teeth (56.1%) in the labial group did not reveal any EARR. No statistically significant difference was found for the resorption rates between the treatment groups (p > 0.05). Although not statistically significant, there was a higher percentage of severe EARR in the mandible within the labial group.

Conclusions

Both lingual and labial orthodontic techniques showed statistically similar root resorption rates. EARR is a multifactorial issue and individual predispositions must also be taken into consideration.

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Title: External apical root resorption after nonextraction orthodontic treatment with labial vs. lingual fixed appliances
Authors: Dr. Hande Pamukçu
Ömür Polat-Özsoy
Ayşe Gülşahi
Mehmet Özgür Özemre
Publication date: 01-01-2020
Publisher: Springer Medizin
Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue 1/2020
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI: https://doi.org/10.1007/s00056-019-00201-w

At a glance: The STEP trials

Springer Medicine

External apical root resorption after nonextraction orthodontic treatment with labial vs. lingual fixed appliances

Abstract

Objectives

Materials and methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Objectives

Materials and methods

Results

Conclusions

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