Effectiveness of decoronation technique in the treatment of ankylosis: A systematic review

Dent Traumatol. 2016 Aug;32(4):255-63. doi: 10.1111/edt.12247. Epub 2015 Dec 10.


Background: Dentoalveolar ankylosis in growing patients is complex leading to continuing root replacement resorption, tooth infra-position, or may even affect the development of alveolar ridge and adjacent teeth. While extraction of ankylosed teeth might be associated with bone loss, decoronation of the offending tooth (removal of crown portion and instrumentation of pulp canal to stimulate bleeding) has been suggested as a more conservative approach of bone preservation until definitive implant placement is planned.

Objective: To primarily assess the efficacy of bone width and height preservation around ankylosed permanent teeth following decoronation.

Methods: Pubmed, Embase, Ovid Medline, Thomson's ISI Web of Science and Cochrane library were searched from the year 1984 up to May 2015. Two authors conducted the data extraction. To eliminate publication bias, Open Grey literature and Pro-quest Dissertation Abstracts and Thesis database was also consulted.

Results: Through our strict selection criteria, only 12 articles were considered for eligibility. No randomized controlled trials were identified. Only one retrospective cohort study, four case series and seven case reports, were analyzed.

Conclusions: Following decoronation, preservation of ridge height and ridge width were both noted. To maximize the benefits of decoronation, a timely and wellmonitored intervention is required. Treatment in patients, who have surpassed pubertal growth peaks, may not yield maximum effective treatment outcomes.

Keywords: decoronation; growth; tooth ankylosis.

Publication types

  • Review
  • Systematic Review

MeSH terms

  • Ankylosis
  • Humans
  • Incisor
  • Retrospective Studies
  • Tooth Ankylosis*
  • Tooth Crown*