title: Coronectomy as a surgical approach to impacted mandibular third molars: a systematic review.
abstract: The aim of this systematic review was to evaluate the clinical effectiveness of the surgical technique of coronectomy for third molars extraction in close proximity with the inferior alveolar nerve.A literature survey carried out through PubMed, SCOPUS and the Cochrane Library from inceptions to the last access in January 31, 2014, was performed to intercept randomised clinical trials, controlled clinical trials, prospective cohort studies or retrospective studies (with or without control group) that examined the clinical outcomes after coronectomy. The following variable were evaluated: inferior alveolar nerve injury, lingual nerve injury, postoperative adverse effects, pulp disease, root migration and rate of reoperation. Ten articles qualified for the final analysis. The successful coronectomies varied from a minimum of 61.7% to a maximum of 100%. Coronectomy was associated with a low incidence of complications in terms of inferior alveolar nerve injury (0%-9.5%), lingual nerve injury (0%-2%), postoperative pain (1.1%-41.9%) and swelling (4.6%), dry socket infection (2%-12%), infection rate (1%-9.5%) and pulp disease (0.9%). Migration of the retained roots seems to be a frequent occurrence (2%-85.3%).Coronectomy appears to be a safe procedure at least in the short term, with a reduced incidence of postoperative complications. Therefore, a coronectomy can be indicated for teeth that are very close to the inferior alveolar nerve. If a second operation is needed for the remnant roots, they can be removed with a low risk of paresthesia, because the roots are generally receded from the mandubular nerve.
authors.affiliation: Unit of Oral Surgery, School of Dental Sciences, University of Trieste, Trieste, Italy. andrea.martin@hotmail.it.
authors.forename: Andrea
authors.initials: A
authors.lastname: Martin
authors.affiliation: Unit of Oral Surgery, School of Dental Sciences, University of Trieste, Trieste, Italy. g.perinetti@fmc.units.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Perinetti
authors.affiliation: Unit of Oral Surgery, School of Dental Sciences, University of Trieste, Trieste, Italy. f.costantinides@fmc.units.it.
authors.forename: Fulvia
authors.initials: F
authors.lastname: Costantinides
authors.affiliation: Unit of Oral Surgery, School of Dental Sciences, University of Trieste, Trieste, Italy. m.maglione@fmc.units.it.
authors.forename: Michele
authors.initials: M
authors.lastname: Maglione
mesh_terms: D054893:Cone-Beam Computed Tomography / Q000379:methods; D020209:Cranial Nerve Injuries / Q000209:etiology / Q000517:prevention & control*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery; D008340:Mandibular Nerve; D008964:Molar, Third / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D010149:Postoperative Pain / Q000503:physiopathology; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D012189:Retrospective Studies; D014081:Tooth Extraction / Q000009:adverse effects / Q000379:methods*; D014095:Tooth, Impacted / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome