{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:41:13Z","timestamp":1760139673130,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,4,22]],"date-time":"2022-04-22T00:00:00Z","timestamp":1650585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100005648","name":"American Association of Orthodontists","doi-asserted-by":"publisher","award":["Full-Time Faculty Fellowship Award"],"award-info":[{"award-number":["Full-Time Faculty Fellowship Award"]}],"id":[{"id":"10.13039\/100005648","id-type":"DOI","asserted-by":"publisher"}]},{"name":"American Association of Orthodontists Foundation","award":["Orthodontic Faculty Development Fellowship Award"],"award-info":[{"award-number":["Orthodontic Faculty Development Fellowship Award"]}]},{"name":"University of Pennsylvania School of Dental Medicine","award":["Joseph and Josephine Rabinowitz Award for Excellence in Research"],"award-info":[{"award-number":["Joseph and Josephine Rabinowitz Award for Excellence in Research"]}]},{"name":"Department of Orthodontics, University of Pennsylvania School of Dental Medicine","award":["J. Henry O'Hern Jr. Pilot Grant"],"award-info":[{"award-number":["J. Henry O'Hern Jr. Pilot Grant"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Molar distalization has been a validated method to correct dental sagittal relationships and create space to relieve mild to moderate crowding. In the current case report, an adult female patient had a mild skeletal Class III relationship and dental Class III molar relationship. Four premolars and one lower incisor were extracted during the previous two rounds of orthodontic treatments, and the maxillary anterior teeth were left with severe proclination and root resorption. Limited by the available teeth, extraction was not an option for her. Thus, molar distalization with TADs was the best option used in the treatment to address her chief complaint. In addition, a proper bite opening was performed to eliminate occlusion trauma. Utilizing the mid-palatal TADs, the maxillary central incisors were retracted 7.9 mm and retroclined 33 degrees, and the molar distalization was achieved as much as 8 mm. The cross-section slices of CBCT images confirmed the proper retraction of maxillary incisors and well-positioned roots in the alveolar bone. Moreover, the root resorption was not worsened from the treatment. Clinically, the maxillary anterior teeth were preserved esthetically and functionally. This case report illustrates that with proper diagnosis and treatment mechanics, significant tooth movement can be achieved even on extremely proclined maxillary incisors with severe root resorption.<\/jats:p>","DOI":"10.3390\/diagnostics12051055","type":"journal-article","created":{"date-parts":[[2022,4,23]],"date-time":"2022-04-23T08:14:06Z","timestamp":1650701646000},"page":"1055","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["En-Mass Retraction of Maxillary Anterior Teeth with Severe Proclination and Root Resorption\u2014A Case Report"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6331-6983","authenticated-orcid":false,"given":"Chenshuang","family":"Li","sequence":"first","affiliation":[{"name":"Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenlu","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, School of Dentistry, University of California, Los Angeles, CA 90095, USA"},{"name":"Sunny Dental Clinic, Shanghai 310000, China"},{"name":"Sunny Dental Institute for Clinical Research and Application, Beijing 100022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shih-Chin","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, School of Dentistry, University of California, Los Angeles, CA 90095, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krisena","family":"Borenstein","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, School of Dentistry, University of California, Los Angeles, CA 90095, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nipul","family":"Tanna","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chun-Hsi","family":"Chung","sequence":"additional","affiliation":[{"name":"Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Won","family":"Moon","sequence":"additional","affiliation":[{"name":"The Forsyth Institute, Cambridge, MA 02142, USA"},{"name":"Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon-si 16499, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Li, C., and Chung, C.-H. 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