{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T16:04:00Z","timestamp":1781625840250,"version":"3.54.5"},"reference-count":25,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T00:00:00Z","timestamp":1764806400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T00:00:00Z","timestamp":1769040000000},"content-version":"vor","delay-in-days":49,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Oral Health"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To evaluate the accuracy of clear aligners in premolar extraction cases by measuring the differences between predicted and achieved tooth movements.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>The sample consisted of 32 patients undergoing extraction treatment with clear aligners, with a mean age of 21.2 (+-7.6) years. Discrepancies between achieved and predicted tooth movements were determined using paired t-tests and independent t-tests. The discrepancies per tooth group were assessed per dental arch and were evaluated for clinical significance (&gt;\u20092 degrees; &gt;0.5\u00a0mm).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Linear discrepancies that demonstrated clinical significance (&gt;\u20090.5\u00a0mm) in the maxillary arch were the buccal-lingual and occlusal-gingival discrepancies for the central incisors (0.61\u00a0mm and 0.87\u00a0mm) and the buccal-lingual discrepancy of the first premolars (0.59\u00a0mm). The first and second molars in the mandibular arch showed buccal-lingual discrepancies of 0.51\u00a0mm and 0.65\u00a0mm, respectively. In comparison, the central (0.66\u00a0mm) and lateral incisors (0.57\u00a0mm) and first and second premolars (both 0.55\u00a0mm) showed clinically significant discrepancies in the occlusal-gingival direction. All angular discrepancies in the maxillary and mandibular dentition were statistically and clinically significant (&gt;\u20092 degrees).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Loss of torque and occlusal-gingival discrepancies of the upper and lower incisors were clinically significant. Unplanned tipping of teeth adjacent to the extraction site was also clinically significant. These factors should be considered and mitigated at the ClinCheck stage to aid efficiency.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12903-025-07321-3","type":"journal-article","created":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T05:12:14Z","timestamp":1764825134000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Retrospective clinical audit of extraction cases treated with clear aligner therapy"],"prefix":"10.1186","volume":"26","author":[{"given":"Greeshma","family":"Jayapalan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ismaeel","family":"Hansa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raghdah","family":"Alzuhairy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandra","family":"Tai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anand","family":"Marya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samar M.","family":"Adel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikhillesh","family":"Vaiid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,12,4]]},"reference":[{"issue":"3","key":"7321_CR1","doi-asserted-by":"publisher","first-page":"4","DOI":"10.1186\/s40510-020-00346-0","volume":"22","author":"M Alseraidi","year":"2021","unstructured":"Alseraidi M, Hansa I, Dhaval F, Ferguson DJ, Vaid NR. 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The study only involved a non-identifying retrospective audit of patient records treated with a combination of clear aligners and premolar extractions.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no conflict of interest, except for Dr. Sandra Tai. We would like to inform the journal that Dr. Sandra Tai is a paid consultant for Invisalign- the aligners studied in this research. The funders had no role in the design of the study, the collection, analysis, or interpretation of data, the writing of the manuscript, or the decision to publish the results. All the remaining authors declare no conflict of interest.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"144"}}