title: Coronectomy versus surgical removal of the lower third molars with a high risk of injury to the inferior alveolar nerve. A bibliographical review.
abstract: BACKGROUND
  Coronectomy is the surgical removal of the crown of the tooth deliberately leaving part of its roots. This is done with the hope of eliminating the pathology caused, and since the roots are still intact, the integrity of the inferior alveolar nerve is preserved.
  
  
  OBJECTIVE
  The aim is to carry out a systematic review in order to be able to provide results and conclusions with the greatest scientific evidence possible.
  
  
  METHODS
  A literature review is carried out through the following search engines: Pubmed MEDLINE, Scielo, Cochrane library and EMI. The level of evidence criteria from the Agency for Healthcare Research and Quality was applied, and the clinical trials' level of quality was analyzed by means of the JADAD criteria.
  
  
  RESULTS
  The following articles were obtained which represents a total of 17: 1 systematic review, 2 randomized clinical trials and 2 non-randomized clinical trials, 3 cohort studies, 2 retrospective studies, 3 case studies and 4 literature reviews.
  
  
  CONCLUSIONS
  Coronectomy is an adequate preventative technique in protecting the inferior alveolar nerve, which is an alternative to the conventional extraction of third molars, which unlike the former technique, presents a high risk of injury to the inferior alveolar nerve. However, there is a need for new clinical studies, with a greater number of samples and with a longer follow-up period in order to detect potential adverse effects of the retained roots.
authors: Bellvitge University Campus, Departament of Odontoestomatology, School of Dentistry, Pabellón de Gobierno, C/Feixa LLarga s/n, 08907 L'Hospitalet de Llobregat, Barcelona, Spain, Jl.lopez@ub.edu.
authors: Javier
authors: J
authors: Moreno-Vicente
authors: Rocío
authors: R
authors: Schiavone-Mussano
authors: Enrique
authors: E
authors: Clemente-Salas
authors: Antoni
authors: A
authors: Marí-Roig
authors: Enric
authors: E
authors: Jané-Salas
authors: José
authors: J
authors: López-López
mesh_terms: D006801:Humans; D008964:Molar, Third / Q000601:surgery*; D012307:Risk Factors; D019228:Tooth Crown / Q000601:surgery*; D014081:Tooth Extraction / Q000009:adverse effects; D061221:Trigeminal Nerve Injuries / Q000209:etiology / Q000517:prevention & control