Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Risk of ankylosis of 400 avulsed and replanted human teeth in relation to length of dry storage: A re-evaluation of a long-term clinical study

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

DOI

  1. What are the important outcomes in traumatic dental injuries? An international approach to the development of a core outcome set

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Ectopic eruption of the second premolar: an analysis of four different treatment approaches

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Phenotypic presentations of Hajdu-Cheney syndrome according to age - 5 distinct clinical presentations

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Autotransplantation of Teeth to the Anterior Region

    Publikation: Bidrag til bog/antologi/rapportBidrag til bog/antologiFormidling

  4. Avulsions

    Publikation: Bidrag til bog/antologi/rapportBidrag til bog/antologiFormidling

  5. Classification, Epidemiology and Etiology

    Publikation: Bidrag til bog/antologi/rapportBidrag til bog/antologiFormidling

Vis graf over relationer

BACKGROUND/AIMS: Ankylosis and subsequent tooth loss is a serious complication following tooth avulsion and replantation. The aim of the study was to evaluate the risk of ankylosis of human teeth replanted after various periods of dry storage prior to replantation. The material originates from a previously reported clinical study of 400 replanted teeth.

METHODS: Initial treatment, clinical and radiological examination and follow-up were conducted according to a standardized protocol. PDL was not removed. Follow-up periods ranged from 0.2 to 20 years (mean 5.1 years). The risk of ankylosis was analysed using the Cox regression model including stage of root development, length of dry time and age > 20 years.

RESULTS: The risk of ankylosis significantly increased with increasing length of dry time (hazard ratio: 1.22, P = .002) and was significantly higher for teeth with mature root development than for teeth with immature root development (hazard ratio: 2.1 P < .0001). The estimated risks of ankylosis after 900 days for teeth with immature root development were: dry time < 20 minutes: 33.9% (95% confidence interval (CI): 25.4-42.7), dry time 20-40 minutes: 49.6% (95% CI: 37.5-64.8), dry time 40-60 minutes: 54.4% (95% CI: 37.1-71.3) and dry time > 60 minutes: 60.0% (95% CI: 45.0-75.8). The risks for teeth with mature root development were: dry time < 20 minutes: 59.4% (95% CI: 51.6-66.5), dry time 20-40 minutes: 78.3% (95% CI: 69.5-86.2), dry time 40-60 minutes: 81.9% (95% CI: 67.2-92.4) and dry time > 60 minutes: 86.4% (95% CI: 79.7; 92.9).

CONCLUSION: The risk of ankylosis rose with increasing length of dry time. However, some teeth may heal without ankylosis even after 60 minutes of dry time. Immature teeth have a lower risk of developing ankylosis. Replantation should therefore always be considered for avulsed teeth.

OriginalsprogEngelsk
TidsskriftDental Traumatology Online
Vol/bind36
Udgave nummer2
Sider (fra-til)108-116
ISSN1600-9657
DOI
StatusUdgivet - apr. 2020

Bibliografisk note

© 2019 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

ID: 58635688