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Root resorption diagnosed with cone beam computed tomography after 6 months and at the end of orthodontic treatment with fixed appliances

Artikel i vetenskaplig tidskrift
Författare Dimitrios Makedonas
Henrik Lund
Ken Hansen
Publicerad i Angle orthodontist
Volym 83
Nummer/häfte 3
Sidor 389-393
ISSN 0003-3219
Publiceringsår 2013
Publicerad vid Institutionen för odontologi
Sidor 389-393
Språk en
Länkar dx.doi.org/10.2319/042012-332.1
Ämnesord Orthodontics, Fixed appliance, Cone beam computed tomography, Root resorption
Ämneskategorier Ortodonti, Radiologisk forskning

Sammanfattning

Objective: To investigate the prevalence of orthodontically induced root resorption after treatment and the correlation with resorption found after 6 months of treatment. Materials and Methods: One hundred fifty-six patients (11-18 years) treated with fixed appliances and extraction of four premolars were examined with cone beam computed tomography before treatment, after 6 months of treatment (n  =  97), and at the end of active treatment. The Malmgren Index was used to describe the degree of root resorption. Results: Severe root resorption (>2 mm, score 3) was found in 25.6% of the patients at the end of treatment. Extreme root resorption was found in one patient. Root resorption was seen more frequently in the maxillary incisor region. There was no correlation between the severity of root resorption after 6 months and the amount observed at the end of treatment. Furthermore, no correlation was seen between treatment duration and the severity of root resorption. Conclusions: Clinically significant resorption was diagnosed in 25.6% of the patients, but no correlations, either with the resorption seen after 6 months or with the length of treatment, were found. Radiographic examination after 3 to 6 months of orthodontic treatment is too early and will not reduce the number of patients who will have teeth with severe root resorption.

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