Severe root resorption resulting from orthodontic treatment: Prevalence and risk factors

Author:

Maués Caroline Pelagio Raick1,Nascimento Rizomar Ramos do,Vilella Oswaldo de Vasconcellos2

Affiliation:

1. Fluminense Federal University

2. UFF

Abstract

OBJECTIVE: To assess the prevalence of severe external root resorption and its potential risk factors resulting from orthodontic treatment. METHODS: A randomly selected sample was used. It comprised conventional periapical radiographs taken in the same radiology center for maxillary and mandibular incisors before and after active orthodontic treatment of 129 patients, males and females, treated by means of the Standard Edgewise technique. Two examiners measured and defined root resorption according to the index proposed by Levander et al. The degree of external apical root resorption was registered defining resorption in four degrees of severity. To assess intra and inter-rater reproducibility, kappa coefficient was used. Chi-square test was used to assess the relationship between the amount of root resorption and patient's sex, dental arch (maxillary or mandibular), treatment with or without extractions, treatment duration, root apex stage (open or closed), root shape, as well as overjet and overbite at treatment onset. RESULTS: Maxillary central incisors had the highest percentage of severe root resorption, followed by maxillary lateral incisors and mandibular lateral incisors. Out of 959 teeth, 28 (2.9%) presented severe root resorption. The following risk factors were observed: anterior maxillary teeth, overjet greater than or equal to 5 mm at treatment onset, treatment with extractions, prolonged therapy, and degree of apex formation at treatment onset. CONCLUSION: This study showed that care must be taken in orthodontic treatment involving extractions, great retraction of maxillary incisors, prolonged therapy, and/or completely formed apex at orthodontic treatment onset.

Publisher

FapUNIFESP (SciELO)

Subject

Oral Surgery,Orthodontics

Reference30 articles.

1. Identification of orthodontic patients at risk of severe apical root resorption;Artun J;Am J Orthod Dentofacial Orthop,2009

2. Physical properties of root cementum: Part 17. Root resorption after the application of 2.50 and 150 of buccal root torque for 4 weeks: a micro computed tomography study;Bartley N;Am J Orthod Dentofacial Orthop,2011

3. External apical root resorption in Class II malocclusion: a retrospective review of 1- versus 2-phase treatment;Brin I;Am J Orthod Dentofacial Orthop,2003

4. Physical properties of root cementum: Part 22;Montenegro VJ;Root resorption after the application of light and heavy extrusive orthodontic forces: a microcomputed tomography study Am J Orthod Dentofacial Orthop,2012

5. Predicting and preventing root resorption: Part I. Diagnostic factors;Sameshima GT;Am J Orthod Dentofacial Orthop,2001

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