{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T19:11:45Z","timestamp":1778094705201,"version":"3.51.4"},"reference-count":24,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2024,7,23]],"date-time":"2024-07-23T00:00:00Z","timestamp":1721692800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess the relative position of mini\u2010implants to retain a mandibular overdenture, according to the surgical protocol, technical and anatomical factors.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Mandibular cone\u2010beam computed tomography (CBCT) scans were analyzed for 73 patients who received four one\u2010piece titanium\u2010zirconium mini\u2010implants. Drilling was performed using a 1.6\u2009mm needle drill and a 2.2\u2009mm Pilot Drill, according to the bone density with a surgical stent. Post\u2010insertion CBCT images in DICOM format were analyzed using the E\u2010Vol\u2010DX software with BAR filters. Divergence angle between implants and between implants and the overdenture path of insertion was measured using CliniView 10.2.6 software.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Divergence between implants ranged from 0\u00b0 to 22.3\u00b0 (mean\u2009=\u20094.2; SD\u2009=\u20093.7) in the lateral and from 0\u00b0 to 26.2\u00b0 (mean\u2009=\u20095.3; SD\u2009=\u20094.1) in the frontal projections (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). Only 1 (0.2%) and 3 (0.7%) of the measurements were higher than 20\u00b0 in the lateral and frontal views, respectively. The mean angulations between the implant and the path of insertion for the overdenture were 9.3\u00b0 (SD\u2009=\u20097.5) and 4.0\u00b0 (SD\u2009=\u20092.9) for the lateral and frontal views, respectively (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001). Regression analyses showed a significant association between the divergence of implants and the frontal view projection (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001), greater distance between the paired implants (<jats:italic>p<\/jats:italic>\u2009=\u2009.017), the flapped surgical protocol (<jats:italic>p<\/jats:italic>\u2009=\u2009.002), higher final insertion torque (<jats:italic>p<\/jats:italic>\u2009=\u2009.011), and deeper preparation with the needle drill (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The mini\u2010implants were placed with low divergence angles and satisfactory parallelism. Factors including shorter distances between the implants, higher density bone, and a flapless surgical approach all contributed positively to improved parallelism of the mini\u2010implants.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14335","type":"journal-article","created":{"date-parts":[[2024,7,23]],"date-time":"2024-07-23T09:54:29Z","timestamp":1721728469000},"page":"1475-1484","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A cross\u2010sectional <scp>CBCT<\/scp> assessment of the relative position of one\u2010piece titanium\u2010zirconium mini\u2010implants placed for mandibular overdentures using non\u2010guided surgery"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6812-4849","authenticated-orcid":false,"given":"Cl\u00e1udio Rodrigues","family":"Leles","sequence":"first","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"},{"name":"Division of Gerodontology, Department of Reconstructive Dentistry School of Dental Medicine of the University of Bern  Bern Switzerland"},{"name":"Clinic of General\u2010, Special Care\u2010 and Geriatric Dentistry, Center of Dental Medicine University of Zurich  Zurich Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leu\u00e7on","family":"de Oliveira\u00a0Moura\u2010Neto","sequence":"additional","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2152-9654","authenticated-orcid":false,"given":"J\u00e9sio Rodrigues","family":"Silva","sequence":"additional","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lays Noleto","family":"Nascimento","sequence":"additional","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1912-4217","authenticated-orcid":false,"given":"Thalita Fernandes Fleury","family":"Curado","sequence":"additional","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0198-5828","authenticated-orcid":false,"given":"Nadia Lago","family":"Costa","sequence":"additional","affiliation":[{"name":"School of Dentistry Federal University of Goias  Goiania Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9700-5534","authenticated-orcid":false,"given":"Martin","family":"Schimmel","sequence":"additional","affiliation":[{"name":"Division of Gerodontology, Department of Reconstructive Dentistry School of Dental Medicine of the University of Bern  Bern Switzerland"},{"name":"Division of Gerodontology and Removable Prosthodontics University Clinics of Dental Medicine, University of Geneva  Geneva Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8478-1673","authenticated-orcid":false,"given":"Gerald","family":"McKenna","sequence":"additional","affiliation":[{"name":"Clinic of General\u2010, Special Care\u2010 and Geriatric Dentistry, Center of Dental Medicine University of Zurich  Zurich Switzerland"},{"name":"Centre for Public Health Queen's University Belfast  Belfast UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,23]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022\u20103913(09)60134\u20107"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/prd.12411"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/clr.13382"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/ID.0000000000000620"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/clr.14102"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022\u20103913(13)60053\u20100"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/2380084417741446"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2022.06.007"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/clr.13444"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.prosdent.2020.06.015"},{"issue":"2","key":"e_1_2_11_12_1","first-page":"191","article-title":"Complications and maintenance requirements for fixed prostheses and overdentures in the edentulous mandible: A 5\u2010year report","volume":"9","author":"Hemmings K. 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