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Informed consent was obtained. First, the intraoral scans of implant patients were annotated and subsequently analyzed using the SSM. The RTA, computed by the SSM, was then projected into the preoperative planning dataset. The amount and direction of spatial deviation between RTA and CIA were then measured.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Thirty-five patients were implemented. The mean distance between the occlusal entry point of anterior and posterior implants and the RTA was 0.99\u00a0mm\u2009\u00b1\u20090.78\u00a0mm and 1.19\u00a0mm\u2009\u00b1\u20090.55, respectively. The mean angular deviation between the CIA of anterior and posterior implants and the RTA was 12.4\u00b0\u2009\u00b1\u20093.85\u00b0 and 5.27\u00b0\u2009\u00b1\u20092.97\u00b0 respectively. The deviations in anterior implant cases were systematic and could be corrected by computing a modified RTA (mRTA) with decreased deviations (0.99\u00a0mm\u2009\u00b1\u20090.84 and 4.62\u00b0\u2009\u00b1\u20091.95\u00b0). The safety distances of implants set along the (m)RTA to neighboring teeth were maintained in 30 of 35 cases.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The RTA estimated by the SSM revealed to be a viable implant axis for most of the posterior implant cases. As there are natural differences between the anatomical tooth axis and a desirable implant axis, modifications were necessary to correct the deviations which occurred in anterior implant cases. However, the presented approach is not applicable for clinical use and always requires manual optimization by the planning surgeon.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s11548-023-02996-x","type":"journal-article","created":{"date-parts":[[2023,7,31]],"date-time":"2023-07-31T14:02:14Z","timestamp":1690812134000},"page":"591-599","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Reconstruction of dental roots for implant planning purposes: a retrospective computational and radiographic assessment of single-implant cases"],"prefix":"10.1007","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4697-5287","authenticated-orcid":false,"given":"Leonard Simon","family":"Brandenburg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joachim","family":"Georgii","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rainer","family":"Schmelzeisen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benedikt Christopher","family":"Spies","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felix","family":"Burkhardt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marc Anton","family":"Fuessinger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ren\u00e9 Marcel","family":"Rothweiler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Gross","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stefan","family":"Schlager","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marc Christian","family":"Metzger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2023,7,31]]},"reference":[{"key":"2996_CR1","doi-asserted-by":"publisher","first-page":"561","DOI":"10.1016\/j.cden.2014.04.002","volume":"58","author":"MD Scherer","year":"2014","unstructured":"Scherer MD (2014) Presurgical implant-site assessment and restoratively driven digital planning. 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