External apical root resorption following orthodontic treatment.
Copyright policy )External apical root resorption following orthodontic treatment.
This study investigated the association of appliance type and tooth extraction with the incidence of external apical root resorption (EARR) of posterior teeth following orthodontic treatment. Pre- and posttreatment orthopantomograms were compared for 97 patients and a 4-grade ordinal scale used to measure EARR. The incidence of EARR was positively associated with tooth position (P < .001), appliance type (P = .038), and extractions (P = .001). This was observed in an overall analysis mutually adjusted for the effects of age at start of treatment, pretreatment overbite and overjet, use of headgear, tooth extraction, and type of appliance. The incidence of EARR was 2.30 times higher for Begg appliances compared with edgewise, and it was 3.72 times higher where extractions were performed.
- Queensland University of Technology Australia
- University of Queensland Australia
- University of Queensland Australia
Fixed orthodontic appliance, Posterior teeth, Adolescent, 730112 Oro-dental and disorders, oral surgery & medicine, Root Resorption, Confounding Factors, Epidemiologic, External apical root resorption, Molar, Orthodontics, Corrective, C1, Orthodontic Appliances, Dentistry, Sample Size, Radiography, Panoramic, Tooth Extraction, Odds Ratio, Humans, 320899 Dentistry not elsewhere classified, Bicuspid, Retrospective Studies
Fixed orthodontic appliance, Posterior teeth, Adolescent, 730112 Oro-dental and disorders, oral surgery & medicine, Root Resorption, Confounding Factors, Epidemiologic, External apical root resorption, Molar, Orthodontics, Corrective, C1, Orthodontic Appliances, Dentistry, Sample Size, Radiography, Panoramic, Tooth Extraction, Odds Ratio, Humans, 320899 Dentistry not elsewhere classified, Bicuspid, Retrospective Studies
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