Re-eruption of an intruded immature permanent incisor with necrotic pulp: a case report

J Can Dent Assoc. 2008 Jul-Aug;74(6):545-9.


Intrusive luxation is a serious dental injury that causes damage to the pulp and supporting structures of a tooth because of its dislocation into the alveolar process. This paper presents the case of the re-eruption of a severely intruded immature permanent incisor with a crown-root fracture. A 9-year-old boy was referred to the clinic 1 day after a fall. Clinical and radiographic examinations revealed intrusive luxation of the immature left permanent incisor and a crown-root fracture without pulp exposure. Palatal gingivectomy was done 2 weeks later to facilitate re-eruption. Root canal therapy with intracanal calcium hydroxide paste was initiated during the first month owing to severe spontaneous pain. Six months later, the tooth re-erupted to a normal position, after which root canal obturation and a final esthetic restoration were done. The present case demonstrates the possibility of obtaining re-eruption of intruded immature permanent teeth with interim medication (calcium hydroxide) in the root canal.

Publication types

  • Case Reports

MeSH terms

  • Calcium Hydroxide / therapeutic use
  • Child
  • Dental Pulp Necrosis / etiology*
  • Dental Pulp Necrosis / therapy
  • Follow-Up Studies
  • Gingivectomy
  • Humans
  • Incisor / injuries*
  • Male
  • Post and Core Technique
  • Root Canal Filling Materials / therapeutic use
  • Root Canal Obturation
  • Root Canal Therapy
  • Tooth Apex / drug effects
  • Tooth Avulsion / etiology*
  • Tooth Avulsion / physiopathology
  • Tooth Crown / injuries
  • Tooth Eruption / physiology*
  • Tooth Fractures / etiology
  • Tooth Root / injuries


  • Root Canal Filling Materials
  • Calcium Hydroxide