title: Invasive cervical resorption: etiology, diagnosis, classification and treatment.
abstract: BACKGROUND
  Invasive cervical resorption (ICR) is not well understood by the professional, being misdiagnosed, leading to inappropriate treatment and unnecessary loss of tooth.
  
  
  BACKGROUND
  ICR is defined as a localized process of resorption, which begins in the cervical area of the tooth, just below the epithelial junction and above the ridge crest in the area of the connective tissue insertion. Possible predisposing factors include external trauma, orthodontic movement, surgical procedures, periodontal disease and its treatments, endogenous bleaching, pressure generated by wind instruments and herpes virus infection. Different approaches have been suggested for the treatment of ICR, depending on the extent of the lesion and its location. However, in some cases due to the severity of the injury, there is no alternative but to tooth extraction, followed by restoration of the edentulous area.
  
  
  OBJECTIVE
  Discuss etiology, diagnosis and classification of the ICR, as well as different treatment options. Also is presented a case in which extraction was carried out, installation of the implant and ceramic crown, subsequent to a treatment approach that resulted in failure in the short-term period.
  
  
  CONCLUSIONS
  Early diagnosis of the ICR is critical to proper treatment and favorable prognosis. Interdisciplinary treatment should be instituted as soon as possible, avoiding the loss of the affected tooth. In advanced cases, treatment involving the installation of osseointegrated implants should be considered the first choice of treatment.
  
  
  CONCLUSIONS
  Early diagnosis of the ICR is critical do prevent unnecessary tooth loss, once the prognosis for advanced cases is doubtful.
authors.affiliation: Department of Restorative Dentistry, Federal University of Minas Gerais, Avenida do Contorno, 7069/401 Santo Antonio-30110.043, Belo Horizonte, Minas Gerais, Brazil. jacdiscacciati@uol.com.br
authors.forename: José Augusto Cesar
authors.initials: JA
authors.lastname: Discacciati
authors.forename: Eduardo Lemos
authors.initials: EL
authors.lastname: de Souza
authors.forename: Sérgio Carvalho
authors.initials: SC
authors.lastname: Costa
authors.forename: Herbert Haueisen
authors.initials: HH
authors.lastname: Sander
authors.forename: Vinícius de Magalhães
authors.initials: Vde M
authors.lastname: Barros
authors.forename: Walison Arthuso
authors.initials: WA
authors.lastname: Vasconcellos
mesh_terms: D000328:Adult; D003442:Crowns; D003481:Cuspid / Q000473:pathology; D019250:Dental Implants, Single-Tooth; D016379:Denture, Partial, Fixed, Resin-Bonded; D042241:Early Diagnosis; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D016348:Osseointegration / Q000502:physiology; D010347:Patient Care Planning; D011379:Prognosis; D012391:Root Resorption / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D019237:Tooth Cervix / Q000473:pathology*; D019228:Tooth Crown / Q000473:pathology