{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,15]],"date-time":"2025-11-15T17:11:17Z","timestamp":1763226677301,"version":"3.40.5"},"reference-count":39,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2019,3,20]],"date-time":"2019-03-20T00:00:00Z","timestamp":1553040000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Anatomy"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:p>Most of the studies of the mandible's anatomical variations have presented the authors' speculations, and only a limited number has provided evidence that demonstrated the actual complications injury to the variant structures caused. To our knowledge, no study has evaluated the risks associated with these variant anatomical structures' injury. We reviewed articles that described clinical cases of the injury to, and anatomical studies of, three anatomical variants of the mandible\u2014the accessory mental, lingual, and retromolar foramina\u2014with which dentists are relatively familiar and that are mentioned often in the context of implant and third molar surgeries, to describe risk assessment methods with which to evaluate potential complications preoperatively. Only a limited number of the clinical reports of injury to the mandible's accessory foramina were available. The potential severe complication of injury of the accessory mental foramen (AMF) is sensory disturbance of the lower lip. Risk of neurosensory disturbance of lower lip can be assessed by AMF\/MF ratio and positional relations to the MF. Potential severe complication of injury of the lingual foramen is bleeding and hemorrhage in the oral cavity's floor. Risk of bleeding can be assessed by diameter and positional relation between the mental spine\/mylohyoid line. A risk assessment of the retromolar foramen could not be made because of inadequate data. We hope the risk assessments suggested will encourage dentists to predict intraoperative\/postoperative complications caused by damaging the mandible's accessory foramina. Clin. Anat. 32:672\u2013677, 2019. \u00a9 2019 Wiley Periodicals, Inc.<\/jats:p>","DOI":"10.1002\/ca.23366","type":"journal-article","created":{"date-parts":[[2019,3,8]],"date-time":"2019-03-08T14:40:30Z","timestamp":1552056030000},"page":"672-677","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Review of Risk Assessment of Major Anatomical Variations in Clinical Dentistry"],"prefix":"10.1002","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8502-7952","authenticated-orcid":false,"given":"Joe","family":"Iwanaga","sequence":"first","affiliation":[{"name":"Seattle Science Foundation  Seattle Washington"},{"name":"Dental and Oral Medical Center Kurume University School of Medicine  Fukuoka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shogo","family":"Kikuta","sequence":"additional","affiliation":[{"name":"Seattle Science Foundation  Seattle Washington"},{"name":"Dental and Oral Medical Center Kurume University School of Medicine  Fukuoka Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsuyoshi","family":"Tanaka","sequence":"additional","affiliation":[{"name":"Department of Periodontology University of Florida  Gainesville Florida"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuhiko","family":"Kamura","sequence":"additional","affiliation":[{"name":"Sigma Dental Specialists  Murphy Texas"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1317-1047","authenticated-orcid":false,"given":"R. 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