{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T11:22:50Z","timestamp":1776252170542,"version":"3.50.1"},"reference-count":26,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T00:00:00Z","timestamp":1713139200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T00:00:00Z","timestamp":1713139200000},"content-version":"vor","delay-in-days":0,"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><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>To assess the impact of endoscope-assisted fractured roots or fragments extraction within the mandibular canal, along with quantitative sensory testing (QST) alterations in the inferior alveolar nerve (IAN).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Six patients with lower lip numbness following mandibular third molar extraction were selected. All patients had broken roots or fragments within the mandibular canal that were extracted under real-time endoscopic assistance. Follow-up assessments were conducted on postoperative days 1, 7, and 35, including a standardized QST of the lower lip skin.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The average surgical duration was 32.5\u00a0min, with the IAN exposed in all cases. Two of the patient exhibited complete recovery of lower lip numbness, three experienced symptom improvement, and one patient remained unaffected 35 days after the surgery. Preoperative QST results showed that the mechanical detection and pain thresholds on the affected side were significantly higher than those on the healthy side, but improved significantly by postoperative day 7 in five patients, and returned to baseline in two patients on day 35. There were no significant differences in the remaining QST parameters.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>All endoscopic surgical procedures were successfully completed without any additional postoperative complications. There were no cases of deterioration of IAN injury, and lower lip numbness recovered in the majority of cases. Endoscopy allowed direct visualization and examination of the affected nerve, facilitating a comprehensive analysis of the IAN.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12903-024-04216-7","type":"journal-article","created":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T12:01:51Z","timestamp":1713182511000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Endoscopically-assisted extraction of broken roots or fragments within the mandibular canal: a retrospective case series study"],"prefix":"10.1186","volume":"24","author":[{"given":"Junqi","family":"Jiang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenan","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Enbo","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denghui","family":"Duan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangliang","family":"Xu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,4,15]]},"reference":[{"issue":"1","key":"4216_CR1","first-page":"e55","volume":"11","author":"D Di Nardo","year":"2019","unstructured":"Di Nardo D, Mazzucchi G, Lollobrigida M, Passariello C, Guarnieri R, Galli M, De Biase A, Testarelli L. Immediate or delayed retrieval of the displaced third molar: a review. J Clin Exp Dent. 2019;11(1):e55\u201361.","journal-title":"J Clin Exp Dent"},{"issue":"6","key":"4216_CR2","doi-asserted-by":"publisher","first-page":"101442","DOI":"10.1016\/j.jormas.2023.101442","volume":"124","author":"T Kato","year":"2023","unstructured":"Kato T, Watanabe T, Nakao K. An experience of displaced third molar roots removed using computer-assisted navigation system. J Stomatol Oral Maxillofac Surg. 2023;124(6):101442.","journal-title":"J Stomatol Oral Maxillofac Surg"},{"issue":"5","key":"4216_CR3","doi-asserted-by":"publisher","first-page":"542","DOI":"10.1016\/j.bjoms.2016.02.023","volume":"54","author":"Z Huang","year":"2016","unstructured":"Huang Z, Huang Z, Zhang D, Hu H, Liang Q, Chen W. Endoscopically-assisted operations in the treatment of odontogenic peripheral osteomyelitis of the posterior mandible. Br J Oral Maxillofac Surg. 2016;54(5):542\u20136.","journal-title":"Br J Oral Maxillofac Surg"},{"key":"4216_CR4","first-page":"609","volume":"30","author":"G Varvara","year":"2016","unstructured":"Varvara G, Murmura G, Cardelli P, De Angelis D, Caputi S, Sinjari B, Piattelli M. Mandibular third molar displaced in the sublingual space: clinical management and medicolegal considerations. J Biol Regul Homeost Agents. 2016;30:609\u201313.","journal-title":"J Biol Regul Homeost Agents"},{"issue":"4","key":"4216_CR5","doi-asserted-by":"publisher","first-page":"508","DOI":"10.4317\/medoral.20432","volume":"20","author":"J Moreno-Vicente","year":"2015","unstructured":"Moreno-Vicente J, Schiavone-Mussano R, Clemente-Salas E, Mar\u00ed-Roig A, Jan\u00e9-Salas E, L\u00f3pez-L\u00f3pez J. Coronectomy versus surgical removal of the lower third molars with a high risk of injury to the inferior alveolar nerve. A bibliographical review. Med Oral Patol Oral Cir Bucal. 2015;20(4):508\u201317.","journal-title":"Med Oral Patol Oral Cir Bucal"},{"key":"4216_CR6","doi-asserted-by":"crossref","unstructured":"Carvalho RWF, do, Egito Vasconcelos BC. Assessment of factors associated with surgical difculty during removal of impacted lower third molars. J Oral Maxillofac Surg. 2011;69(10):2714-21.","DOI":"10.1016\/j.joms.2011.02.097"},{"issue":"6","key":"4216_CR7","doi-asserted-by":"publisher","first-page":"2171","DOI":"10.1097\/SCS.0b013e3182a2d834","volume":"24","author":"W Engelke","year":"2013","unstructured":"Engelke W, Fuentes R, Beltr\u00e1n V. Endoscopically assisted removal of a lingually displaced third molar adjacent to the inferior alveolar nerve. J Craniofac Surg. 2013;24(6):2171\u20134.","journal-title":"J Craniofac Surg"},{"issue":"3","key":"4216_CR8","doi-asserted-by":"publisher","first-page":"213","DOI":"10.1016\/j.jcms.2013.05.003","volume":"42","author":"W Engelke","year":"2014","unstructured":"Engelke W, Beltr\u00e1n V, Cant\u00edn M, Choi EJ, Navarro P, Fuentes R. Removal of impacted mandibular third molars using an inward fragmentation technique (IFT)-method and first results. J Craniomaxillofac Surg. 2014;42(3):213\u20139.","journal-title":"J Craniomaxillofac Surg"},{"issue":"3","key":"4216_CR9","doi-asserted-by":"publisher","first-page":"400","DOI":"10.1016\/j.ijom.2014.11.018","volume":"44","author":"ZQ Huang","year":"2015","unstructured":"Huang ZQ, Huang ZX, Wang YY, Hu WJ, Fan S, Zhang DM, Chen WL. Removal of the residual roots of mandibular wisdom teeth in the lingual space of the mandible via endoscopy. Int J Oral Max Surg. 2015;44(3):400\u20133.","journal-title":"Int J Oral Max Surg"},{"issue":"4","key":"4216_CR10","doi-asserted-by":"publisher","first-page":"982","DOI":"10.1007\/s10266-023-00788-y","volume":"111","author":"JQ Jiang","year":"2023","unstructured":"Jiang JQ, Kang YF, Chen KN, Cui NH, Yan ZY, Guo CB, Wang EB, Xu XL. Endoscopic visualization of the inferior alveolar nerve associated with somatosensory changes after impacted mandibular third molar extraction. Odontology. 2023;111(4):982\u201392.","journal-title":"Odontology"},{"issue":"1","key":"4216_CR11","doi-asserted-by":"publisher","first-page":"55","DOI":"10.1007\/s00276-015-1510-z","volume":"38","author":"A Weckx","year":"2015","unstructured":"Weckx A, Agbaje JO, Yi S, Jacobs R, Politis C. Visualization techniques of the inferior alveolar nerve (IAN): a narrative review. Surg Radiol Anat. 2015;38(1):55\u201363.","journal-title":"Surg Radiol Anat"},{"issue":"1","key":"4216_CR12","doi-asserted-by":"publisher","first-page":"77","DOI":"10.1016\/j.ejpain.2005.02.003","volume":"10","author":"R Rolke","year":"2006","unstructured":"Rolke R, Magerl W, Campbell KA, Schalber C, Caspari S, Birklein F, Treede RD. Quantitative sensory testing: a comprehensive protocol for clinical trials. Eur J Pain. 2006;10(1):77\u201388.","journal-title":"Eur J Pain"},{"issue":"9","key":"4216_CR13","doi-asserted-by":"publisher","first-page":"3017","DOI":"10.1007\/s00784-019-03169-4","volume":"24","author":"ZY Yan","year":"2020","unstructured":"Yan ZY, Yan XY, Guo CB, Xie QF, Yang GJ, Cui NH. Somatosensory changes in Chinese patients after coronectomy vs. total extraction of mandibular third molar: a prospective study. Clin Oral Invest. 2020;24(9):3017\u201328.","journal-title":"Clin Oral Invest"},{"issue":"1","key":"4216_CR14","doi-asserted-by":"publisher","first-page":"58","DOI":"10.1080\/00016357.2017.1383511","volume":"76","author":"Y Wang","year":"2018","unstructured":"Wang Y, Mo X, Zhang J, Fan Y, Wang K, Peter S. Quantitative sensory testing (QST) in the orofacial region of healthy Chinese: influence of site, gender and age. Acta Odontol Scand. 2018;76(1):58\u201363.","journal-title":"Acta Odontol Scand"},{"key":"4216_CR15","doi-asserted-by":"crossref","unstructured":"Carvalho RWF, do, Egito Vasconcelos BC. Assessment of factors associated with surgical difculty during removal of impacted lower third molars. J Oral Maxillofac Surg. 2011;69(10):2714\u20132721.","DOI":"10.1016\/j.joms.2011.02.097"},{"key":"4216_CR16","doi-asserted-by":"publisher","first-page":"e107","DOI":"10.1016\/j.joms.2011.09.039","volume":"70","author":"L Aznar-Arasa","year":"2012","unstructured":"Aznar-Arasa L, Figueiredo R, Gay-Escoda C. Iatrogenic displacement of lower third molar roots into the sublingual space: report of 6 cases. J Oral Maxillofac Surg. 2012;70:e107\u201315.","journal-title":"J Oral Maxillofac Surg"},{"issue":"1","key":"4216_CR17","doi-asserted-by":"publisher","first-page":"2","DOI":"10.1111\/ors.12013","volume":"6","author":"R Anand","year":"2013","unstructured":"Anand R, Patil PM. Accidental displacement of third molars; report of three cases, review of literature and treatment recommendations. Oral Surg. 2013;6(1):2\u20138.","journal-title":"Oral Surg"},{"issue":"6","key":"4216_CR18","doi-asserted-by":"publisher","first-page":"1186","DOI":"10.1016\/j.joms.2006.11.031","volume":"65","author":"IY Huang","year":"2007","unstructured":"Huang IY, Wu CW, Worthington P. The displaced lower third molar: a literature review and suggestions for management. J Oral Maxillofac Surg. 2007;65(6):1186\u201390.","journal-title":"J Oral Maxillofac Surg"},{"issue":"5","key":"4216_CR19","doi-asserted-by":"publisher","first-page":"1365","DOI":"10.1097\/SCS.0000000000003672","volume":"28","author":"B Bianchi","year":"2017","unstructured":"Bianchi B, Ferri A, Varazzani A, Bergonzani M, Sesenna E. Microsurgical decompression of inferior alveolar nerve after Endodontic Treatment complications. J Craniofac Surg. 2017;28(5):1365\u20138.","journal-title":"J Craniofac Surg"},{"key":"4216_CR20","doi-asserted-by":"crossref","unstructured":"A-V,Bastien,Adnot,et al.Secondary surgical decompression of the inferior alveolar nerve after overfilling of endodontic sealer into the mandibular canal: case report and literature review. J Stomatol Oral Maxillofac Surg. 2017;118(6):389\u201392.","DOI":"10.1016\/j.jormas.2017.09.001"},{"issue":"5","key":"4216_CR21","doi-asserted-by":"publisher","first-page":"674","DOI":"10.1111\/odi.12338","volume":"21","author":"YJ Liang","year":"2015","unstructured":"Liang YJ, He WJ, Zheng PB, Liao GQ. Inferior alveolar nerve function recovers after decompression of large mandibular cystic lesions. Oral Dis. 2015;21(5):674\u20138.","journal-title":"Oral Dis"},{"issue":"1","key":"4216_CR22","doi-asserted-by":"publisher","first-page":"56","DOI":"10.1177\/0003489420939594","volume":"130","author":"J Sun","year":"2021","unstructured":"Sun J, Cai X, Zou W, Zhang J. Outcome of Endoscopic Optic nerve decompression for traumatic Optic Neuropathy. Ann Otol Rhinol Laryngol. 2021;130(1):56\u20139.","journal-title":"Ann Otol Rhinol Laryngol"},{"issue":"1","key":"4216_CR23","doi-asserted-by":"publisher","first-page":"116","DOI":"10.1016\/j.ejpain.2007.04.002","volume":"12","author":"GI Juhl","year":"2008","unstructured":"Juhl GI, Jensen TS, Norholt SE, Svensson P. Central sensitization phenomena after third molar surgery: a quantitative sensory testing study. Eur J Pain. 2008;12(1):116\u201327.","journal-title":"Eur J Pain"},{"issue":"1","key":"4216_CR24","first-page":"59","volume":"20","author":"GI Juhl","year":"2006","unstructured":"Juhl GI, Svensson P, Norholt SE, Jensen TS. Long-lasting mechanical sensitization following third molar surgery. J Orofac Pain. 2006;20(1):59\u201373.","journal-title":"J Orofac Pain"},{"issue":"1","key":"4216_CR25","doi-asserted-by":"publisher","first-page":"19","DOI":"10.11607\/ofph.1680","volume":"31","author":"AL Porporatti","year":"2017","unstructured":"Porporatti AL, Bonjardim LR, Stuginski-Barbosa J, Bonfante EA, Costa YM, Rodrigues Conti PC. Pain from Dental Implant Placement, Inflammatory Pulpitis Pain, and Neuropathic Pain Present different somatosensory profiles. J Oral Facial Pain Headache. 2017;31(1):19\u201329.","journal-title":"J Oral Facial Pain Headache"},{"issue":"3","key":"4216_CR26","doi-asserted-by":"publisher","first-page":"211","DOI":"10.1016\/S0363-5023(78)80084-7","volume":"3","author":"S Levin","year":"1978","unstructured":"Levin S, Pearsall G, Ruderman RJ. Von Frey\u2019s method of measuring pressure sensibility in the hand: an engineering analysis of the Weinstein-Semmes pressure aesthesiometer. J Hand Surg Am. 1978;3(3):211\u20136.","journal-title":"J Hand Surg Am"}],"container-title":["BMC Oral Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-024-04216-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12903-024-04216-7\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12903-024-04216-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,4,15]],"date-time":"2024-04-15T12:02:18Z","timestamp":1713182538000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcoralhealth.biomedcentral.com\/articles\/10.1186\/s12903-024-04216-7"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,4,15]]},"references-count":26,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2024,12]]}},"alternative-id":["4216"],"URL":"https:\/\/doi.org\/10.1186\/s12903-024-04216-7","relation":{},"ISSN":["1472-6831"],"issn-type":[{"value":"1472-6831","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,4,15]]},"assertion":[{"value":"22 February 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 April 2024","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"15 April 2024","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The biomedical ethics committee of Peking University Hospital of Stomatology approved this study (PKUSSIRB-201949142). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all participants.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Informed consent was obtained from the participants for the publication of the identity revealing information.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"456"}}