{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T10:38:52Z","timestamp":1780483132249,"version":"3.54.1"},"reference-count":74,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives:<\/jats:title>\n                    <jats:p>To investigate root resorption after 6\u00a0months of active orthodontic treatment and its relation to possible risk factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>Ninety-seven patients (10\u201318\u00a0years) with a Class I malocclusion and crowding treated with fixed appliance and premolar extractions were examined with cone beam computed tomography before and after 6\u00a0months of active treatment. The exposure covered all teeth from first molar to first molar in both jaws. The Malmgren index was used to evaluate the degree of root resorption. Irregular root contour (score 1) was seen in most teeth already before active treatment, and therefore resorptions were registered only as score 2 (&lt;2\u00a0mm, minor resorption) or higher.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Minor root resorption was noted in 10% of the patients and severe root resorption, &gt;2\u00a0mm (score 3) was found in four patients. Root resorption was more frequently seen in the upper jaw, especially the incisors. There was no statistically significant correlation of root resorption with any of the selected risk factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>After 6\u00a0months of treatment, clinically significant resorption was diagnosed in 4% of the patients, ie, in 96% of the patients the radiographic examination did not reveal any significant information. The selected risk factors did not have any impact on the amount of resorption after 6\u00a0months of active treatment.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2319\/112810-691.1","type":"journal-article","created":{"date-parts":[[2011,8,9]],"date-time":"2011-08-09T09:59:54Z","timestamp":1312883994000},"page":"196-201","source":"Crossref","is-referenced-by-count":36,"title":["Root resorption diagnosed with cone beam computed tomography after 6\u00a0months of orthodontic treatment with fixed appliance and the relation to risk factors"],"prefix":"10.2319","volume":"82","author":[{"given":"Dimitrios","family":"Makedonas","sequence":"first","affiliation":[{"name":"Research Scientist, Department of Orthodontics, Institute of Odontology, Sahlgrenska Academy at University of Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henrik","family":"Lund","sequence":"additional","affiliation":[{"name":"Research Fellow, Department of Oral and Maxillofacial Radiology, Institute of Odontology, Sahlgrenska Academy at University of Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kerstin","family":"Gr\u00f6ndahl","sequence":"additional","affiliation":[{"name":"Professor, Department of Oral and Maxillofacial Radiology, Institute of Odontology, Sahlgrenska Academy at University of Gothenburg and Institute for Postgraduate Dental Education, J\u00f6nk\u00f6ping, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ken","family":"Hansen","sequence":"additional","affiliation":[{"name":"Associate Professor, Department of Orthodontics, University Clinics of Odontology, Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-82-2-196-b01","series-title":"Am J Orthod Dentofacial Orthop","first-page":"62","article-title":"Root resorption after orthodontic treatment: Part 1. 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Root resorption associated with orthodontic tooth movement: a systematic review.Am J Orthod Dentofacial Orthop2010. 137:462\u2013476."},{"key":"i0003-3219-82-2-196-b03","series-title":"Items of Interest","first-page":"332","article-title":"The physiological and pathological resorption of tooth roots.","volume":"36","author":"Ottolengui, R.","year":"1914","unstructured":"Ottolengui, R.\n          \n          The physiological and pathological resorption of tooth roots.\n          Items of Interest\n          1914. 36:332\u2013362. ."},{"key":"i0003-3219-82-2-196-b04","series-title":"Am J Orthod","first-page":"489","article-title":"Treatment results with light wires studied by panoramic radiography.","volume":"81","author":"Mayoral, G.","year":"1982","unstructured":"Mayoral, G.\n          \n          Treatment results with light wires studied by panoramic radiography.\n          Am J Orthod\n          1982. 81:489\u2013497."},{"key":"i0003-3219-82-2-196-b05","series-title":"Angle Orthod","first-page":"235","article-title":"Root resorption in bicuspid intrusion. A scanning electron microscope study.","volume":"52","author":"Harry, M. R.","year":"1982","unstructured":"Harry, M. R. and M. R.Sims. Root resorption in bicuspid intrusion. A scanning electron microscope study.Angle Orthod1982. 52:235\u2013258."},{"key":"i0003-3219-82-2-196-b06","series-title":"Am J Orthod Dentofacial Orthop","first-page":"35","article-title":"Patient characteristics and treatment variables associated with apical root resorption during orthodontic treatment.","volume":"99","author":"Linge, L.","year":"1991","unstructured":"Linge, L. and B. O.Linge. 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A scanning electron microscope study.","volume":"52","author":"Harry, M. R.","year":"1982","unstructured":"Harry, M. R. and M. R.Sims. Root resorption in bicuspid intrusion. A scanning electron microscope study.Angle Orthod1982. 52:235\u2013258."},{"key":"i0003-3219-82-2-196-b06","series-title":"Am J Orthod Dentofacial Orthop","first-page":"35","article-title":"Patient characteristics and treatment variables associated with apical root resorption during orthodontic treatment.","volume":"99","author":"Linge, L.","year":"1991","unstructured":"Linge, L. and B. O.Linge. 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Anomalous dental morphology and root resorption during orthodontic treatment: a pilot study.Aust Orthod J1998. 15:162\u2013167."},{"key":"i0003-3219-82-2-196-b12","series-title":"Eur J Orthod","first-page":"57","article-title":"Early radiographic diagnosis of apical root resorption during orthodontic treatment: a study of maxillary incisors.","volume":"20","author":"Levander, E.","year":"1998","unstructured":"Levander, E., R.Bajka, and O.Malmgren. Early radiographic diagnosis of apical root resorption during orthodontic treatment: a study of maxillary incisors.Eur J Orthod1998. 20:57\u201363."},{"key":"i0003-3219-82-2-196-b13","series-title":"Eur J Orthod","first-page":"173","article-title":"Apical root resorption in upper anterior teeth.","volume":"5","author":"Linge, B. O.","year":"1983","unstructured":"Linge, B. O. and L.Linge. 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