{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T05:05:50Z","timestamp":1776229550628,"version":"3.50.1"},"reference-count":52,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,8,2]],"date-time":"2021-08-02T00:00:00Z","timestamp":1627862400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,8,2]],"date-time":"2021-08-02T00:00:00Z","timestamp":1627862400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100005317","name":"Kermanshah University of Medical Sciences","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005317","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Prog Orthod."],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Introduction<\/jats:title>\n                <jats:p>This study sought to assess the effect of miniscrew insertion angle (vertical and oblique) on its clinical survival under shearing forces in orthodontic patients undergoing canine retraction.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Materials and methods<\/jats:title>\n                <jats:p>In this split-mouth randomized controlled clinical trial, 50 miniscrews were placed bilaterally in 25 patients with 45\u00b0 and 90\u00b0 insertion angles relative to a line perpendicular to the occlusal plane distal to the maxillary first premolar extraction site. Allocation of insertion angles to the right\/left side was random using the Random Allocation Software. The patients, clinician, and statistician were blinded to the allocation of miniscrews to the side of jaw. The patients were followed-up monthly for 6 months. The primary outcome was the clinical survival of miniscrews, which was evaluated at each follow-up session. The secondary outcomes were the miniscrew stability based on the Periotest value (PTV) and the level of pain experienced by patients at 1, 12, and 24 h, and 7 days after miniscrew placement using a visual analog scale (VAS). Data were analyzed using paired t-test, repeated measures ANOVA, and McNemar\u2019s test.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The clinical survival rate of miniscrews placed at 90\u00b0 and 45\u00b0 angles was 76% and 88%, respectively. This difference was not statistically significant (<jats:italic>P<\/jats:italic> = 0.375). No significant difference was noted between the two groups regarding the PTV or the pain score either (<jats:italic>P<\/jats:italic> &gt; 0.05).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Clinically, the insertion angle of miniscrews (90\u00b0 versus 45\u00b0 relative to a line perpendicular to the occlusal plane) has no significant effect on the miniscrew survival rate or stability during orthodontic treatment.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Trial registration<\/jats:title>\n                <jats:p>This trial was registered at <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"http:\/\/www.irct.ir\">www.irct.ir<\/jats:ext-link> (<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/www.irct.ir\/trial\/42723\">IRCT20190901044659N1<\/jats:ext-link>).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Protocol<\/jats:title>\n                <jats:p>The protocol was published after trial commencement.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s40510-021-00370-8","type":"journal-article","created":{"date-parts":[[2021,8,1]],"date-time":"2021-08-01T23:03:25Z","timestamp":1627859005000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Effect of miniscrew insertion angle in the maxillary buccal plate on its clinical survival: a randomized clinical trial"],"prefix":"10.1186","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8167-7632","authenticated-orcid":false,"given":"Amin","family":"Golshah","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kimia","family":"Gorji","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nafiseh","family":"Nikkerdar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,8,2]]},"reference":[{"issue":"1","key":"370_CR1","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1016\/j.ajodo.2005.02.032","volume":"131","author":"S Kuroda","year":"2007","unstructured":"Kuroda S, Sugawara Y, Deguchi T, Kyung HM, Takano-Yamamoto T. 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