{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T14:32:20Z","timestamp":1787927540490,"version":"build-2784847793"},"reference-count":66,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,11]]},"abstract":"ABSTRACT<\/jats:title>\n \n Objectives:<\/jats:title>\n To determine upper incisor root resorption, volume loss, and the relationship between root volume loss and tooth movement after 1 year of orthodontic treatment in patients with marginal bone loss.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods:<\/jats:title>\n \n A total of 30 women (46.3 \u00b1 5.4 years old) with moderate upper incisor bone loss who required intrusion during orthodontic treatment were recruited. Pre- and post-treatment cone beam computed tomography images were reconstructed. Upper incisors at pre- and post-treatment were superimposed; labio- and palato-apical, middle, and coronal third root volumes were assessed. Tooth movement and alveolar bone height were measured from lateral cephalometric radiographs and cone beam computed tomography. Changes in root volume\/alveolar bone height were compared using paired-sample\n t<\/jats:italic>\n -tests, percentage root volume loss for each tooth\/segment was evaluated by one-way analysis of variance, and the relationship between percentage root loss and degree of tooth movement was assessed by linear regression.\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n Mean root volume significantly decreased on the labio- and palato-apical aspects of 12 and labio-apical aspects of 21 and 22 (\n P<\/jats:italic>\n \u2264 .024). Palato-apical segment volume loss was greater on lateral than central incisors (\n P<\/jats:italic>\n \u2264 .016). Two-dimensional root length and cementoenamel junction-bone crest distance did not change between T0 and T1, with no significant relationship between tooth movement amount and percentage root volume loss.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n Delivery of 40 g intrusive force to the four upper incisors using a T-loop and the leveling phase lead to more apical root volume loss on lateral than central incisors. There was no relationship between extent of tooth movement and upper incisor root volume loss.<\/jats:p>\n <\/jats:sec>","DOI":"10.2319\/121717-868.1","type":"journal-article","created":{"date-parts":[[2018,6,18]],"date-time":"2018-06-18T09:37:27Z","timestamp":1529314647000},"page":"710-718","source":"Crossref","is-referenced-by-count":28,"title":["Volumetric evaluation of root resorption on the upper incisors using cone beam computed tomography after 1 year of orthodontic treatment in adult patients with marginal bone loss"],"prefix":"10.2319","volume":"88","author":[{"given":"Pornputthi","family":"Puttaravuttiporn","sequence":"first","affiliation":[{"name":"Graduate Student, Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mutita","family":"Wongsuwanlert","sequence":"additional","affiliation":[{"name":"Assistant Professor, Periodontic Section, Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chairat","family":"Charoemratrote","sequence":"additional","affiliation":[{"name":"Associate Professor, Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chidchanok","family":"Leethanakul","sequence":"additional","affiliation":[{"name":"Associate Professor, Orthodontic Section, Department of Preventive Dentistry, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-88-6-710-b01","series-title":"Semin Orthod","first-page":"246","article-title":"Orthodontics and external apical root resorption","volume":"13","author":"Abass \n SK,","year":"2007","unstructured":"Abass \n SK, \n \n \n Hartsfield \n JK. \n \n \n Orthodontics and external apical root resorption. 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Angle Orthod. 1991;61:125\u2013132."},{"key":"i0003-3219-88-6-710-b10","series-title":"Am J Orthod Dentofacial Orthop","first-page":"639","article-title":"Physical properties of root cementum: part 8. Volumetric analysis of root resorption craters after application of controlled intrusive light and heavy orthodontic forces: a microcomputed tomography scan study","volume":"130","author":"Harris \n DA,","year":"2006","unstructured":"Harris \n DA, \n \n \n Jones \n AS, \n \n \n Darendeliler \n MA. \n \n \n Physical properties of root cementum: part 8. Volumetric analysis of root resorption craters after application of controlled intrusive light and heavy orthodontic forces: a microcomputed tomography scan study. Am J Orthod Dentofacial Orthop. 2006;130:639\u2013647."},{"key":"i0003-3219-88-6-710-b11","series-title":"Am J Orthod Dentofacial Orthop","first-page":"138","article-title":"Root resorption after orthodontic treatment: part 2. 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Am J Orthod Dentofacial Orthop. 1986;90:321\u2013326."},{"key":"i0003-3219-88-6-710-b13","series-title":"Am J Orthod Dentofacial Orthop","first-page":"390","article-title":"A study of the relationship between incisor intrusion and root shortening","volume":"96","author":"McFadden \n WM,","year":"1989","unstructured":"McFadden \n WM, \n \n \n Engstrom \n C, \n \n \n Engstrom \n H, \n \n \n Anholm \n JM. \n \n \n A study of the relationship between incisor intrusion and root shortening. Am J Orthod Dentofacial Orthop. 1989;96:390\u2013396."},{"key":"i0003-3219-88-6-710-b14","series-title":"Am J Orthod Dentofacial Orthop","first-page":"543","article-title":"An evaluation of root resorption incident to orthodontic intrusion","volume":"109","author":"Costopoulos \n G,","year":"1996","unstructured":"Costopoulos \n G, \n \n \n Nanda \n R. \n \n \n An evaluation of root resorption incident to orthodontic intrusion. 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Int J Dent Hyg. 2016;16:202\u2013209."},{"key":"i0003-3219-88-6-710-b33","series-title":"Am J Orthod Dentofacial Orthop","first-page":"462","article-title":"Root resorption associated with orthodontic tooth movement: a systematic review","volume":"137","author":"Weltman \n B,","year":"2010","unstructured":"Weltman \n B, \n \n \n Vig \n KW, \n \n \n Fields \n HW, \n \n \n Shanker \n S, \n \n \n Kaizar \n EE. \n \n \n Root resorption associated with orthodontic tooth movement: a systematic review. Am J Orthod Dentofacial Orthop. 2010;137:462\u2013476."},{"key":"i0003-3219-88-6-710-b01","series-title":"Semin Orthod","first-page":"246","article-title":"Orthodontics and external apical root resorption","volume":"13","author":"Abass \n SK,","year":"2007","unstructured":"Abass \n SK, \n \n \n Hartsfield \n JK. \n \n \n Orthodontics and external apical root resorption. 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Angle Orthod. 2012;83:196\u2013203."},{"key":"i0003-3219-88-6-710-b04","series-title":"Am J Orthod Dentofacial Orthop","first-page":"311","article-title":"Apical root resorption in orthodontically treated adults","volume":"110","author":"Baumrind \n S,","year":"1996","unstructured":"Baumrind \n S, \n \n \n Korn \n EL, \n \n \n Boyd \n RL. \n \n \n Apical root resorption in orthodontically treated adults. Am J Orthod Dentofacial Orthop. 1996;110:311\u2013320."},{"key":"i0003-3219-88-6-710-b05","series-title":"Eur J Dent","first-page":"445","article-title":"Apical root resorption caused by orthodontic forces: A brief review and a long-term observation","volume":"6","author":"Topkara \n A,","year":"2012","unstructured":"Topkara \n A, \n \n \n Karaman \n AI, \n \n \n Kau \n CH. \n \n \n Apical root resorption caused by orthodontic forces: A brief review and a long-term observation. 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