{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T08:17:01Z","timestamp":1787818621617,"version":"build-2784847793"},"reference-count":24,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2024,4,22]],"date-time":"2024-04-22T00:00:00Z","timestamp":1713744000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100007129","name":"Natural Science Foundation of Shandong Province","doi-asserted-by":"publisher","award":["ZR2022MH215"],"award-info":[{"award-number":["ZR2022MH215"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthod Craniofacial Res"],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>This retrospective single\u2010centre study aimed to compare the efficacy of maxillary second molar intrusion with two different approaches, miniscrew\u2010assisted molar intrusion and traditional segmental archwire intrusion, and to compare orthodontically induced external apical root resorption (OIERR) during intrusion between two groups via cone beam computed tomography (CBCT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>A total of 40 adult patients (33.6\u2009\u00b1\u200910.3\u2009years old) with supraerupted maxillary second molars due to the loss of antagonistic teeth were recruited, with 20 patients in each group. A segmental archwire with adjacent teeth as an anchorage was used in the control group, and 60\u2013100\u2009g of intrusive force was applied by using miniscrews in the experimental group to intrude the overerupted molars. Full\u2010volume CBCT was performed before and after intrusion, and the amount of intrusion and extent of OIERR of the overerupted molars were compared between the two groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Supraerupted maxillary second molars could be successfully intruded in an average of 5\u2009months. There was more intrusive movement of the buccal and palatal cusps in the mininscrew group than that in the segmental archwire group (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). The intrusive amount of palatal cusp was 3.67\u2009\u00b1\u20091.13\u2009mm in the miniscrew group and 2.38\u2009\u00b1\u20090.74\u2009mm in the segmental archwire group. More palatal OIERR was observed in the miniscrew group (30.3\u2009\u00b1\u200911.6\u2009mm<jats:sup>3<\/jats:sup>) than in the segmental archwire group (21.0\u2009\u00b1\u20098.66\u2009mm<jats:sup>3<\/jats:sup>) (<jats:italic>P<\/jats:italic>\u2009=\u2009.0063). There was no significant difference in OIERR between the two groups for mesial and distal buccal roots (<jats:italic>P<\/jats:italic>\u2009&gt;\u2009.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Miniscrews help effectively with supraerupted maxillary second molar intrusion, especially for palatal cusps. There was more OIERR in the palatal root when using miniscrews compared to the segmental archwire approach.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ocr.12793","type":"journal-article","created":{"date-parts":[[2024,4,22]],"date-time":"2024-04-22T09:54:12Z","timestamp":1713779652000},"page":"733-739","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Efficacy of maxillary molar intrusion and quantification of related external apical root resorption \u2013 A comparison of two approaches"],"prefix":"10.1111","volume":"27","author":[{"given":"Jialin","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Orthodontics The Affiliated Hospital of Qingdao University  Qingdao China"},{"name":"School of Stomatology Qingdao University  Qingdao China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tian","family":"Wei","sequence":"additional","affiliation":[{"name":"Department of Orthodontics The Affiliated Hospital of Qingdao University  Qingdao China"},{"name":"School of Stomatology Qingdao University  Qingdao China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Orthodontics The Affiliated Hospital of Qingdao University  Qingdao China"},{"name":"School of Stomatology Qingdao University  Qingdao China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9571-0958","authenticated-orcid":false,"given":"Chunmiao","family":"Jiang","sequence":"additional","affiliation":[{"name":"Department of Orthodontics The Affiliated Hospital of Qingdao University  Qingdao China"},{"name":"School of Stomatology Qingdao University  Qingdao China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,4,22]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2009.06.032"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0889-5406(03)00047-7"},{"issue":"5","key":"e_1_2_11_4_1","first-page":"754","article-title":"Maxillary molar intrusion with fixed appliances and mini\u2010implant anchorage studied in three dimensions","volume":"75","author":"Yao CC","year":"2005","journal-title":"Angle Orthod"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.2319\/060912-480.1"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.11607\/ijp.4224"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1590\/2177-6709.21.3.056-066.oar"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.4103\/1305-7456.195169"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40510-016-0155-8"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.4103\/ijdr.IJDR_724_18"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.4103\/ccd.ccd_444_18"},{"issue":"2","key":"e_1_2_11_12_1","first-page":"233","article-title":"True intrusion of maxillary first molars with zygomatic and palatal miniscrew anchorage: a case report","volume":"32","author":"Tripathi T","year":"2016","journal-title":"Aust Orthod J"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1590\/2177-6709.23.6.056-063.oar"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.2319\/010723-14.1"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40510-016-0122-4"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0060962"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.17096\/jiufd.24271"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2006.08.017"},{"key":"e_1_2_11_19_1","doi-asserted-by":"publisher","DOI":"10.1034\/j.1600-0544.2001.040308.x"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.1051\/orthodfr\/2015034"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12903-018-0551-1"},{"key":"e_1_2_11_22_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00784-013-0963-x"},{"issue":"10","key":"e_1_2_11_23_1","first-page":"1743","article-title":"The study on the depression of maxillary molar teeth related to maxillary sinus with CBCT","volume":"28","author":"Lou X","year":"2019","journal-title":"Henan Med Res"},{"issue":"2","key":"e_1_2_11_24_1","first-page":"129","article-title":"Maxillary molar intrusion with micro\u2010implant anchorage (MIA)","volume":"21","author":"Park HS","year":"2005","journal-title":"Aust Orthod J"},{"key":"e_1_2_11_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2015.12.014"}],"container-title":["Orthodontics &amp; 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