Survival of Root-filled Teeth in the Swedish Adult Population

Helena Fransson; Victoria S Dawson; Fredrik Frisk; Lars Bjørndal; EndoReCo; Thomas Kvist

doi:10.1016/j.joen.2015.11.008

Survival of Root-filled Teeth in the Swedish Adult Population

J Endod. 2016 Feb;42(2):216-20. doi: 10.1016/j.joen.2015.11.008.

Authors

Helena Fransson¹, Victoria S Dawson², Fredrik Frisk³, Lars Bjørndal⁴; EndoReCo; Thomas Kvist⁵

Collaborators

EndoReCo:
Lars Bjørndal, Victoria S Dawson, Helena Fransson, Fredrik Frisk, Peter Jonasson, Thomas Kvist, Merete Markvart, Kerstin Petersson, Maria Pigg, Claes Reit, Eva Wolf

Affiliations

¹ Department of Endodontics, Faculty of Odontology, Malmö University, Malmö, Sweden. Electronic address: helena.fransson@mah.se.
² Department of Endodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
³ Department of Endodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Institute for Postgraduate Dental Education, Jönköping, Sweden.
⁴ Department of Cariology and Endodontics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
⁵ Department of Endodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

PMID: 26813417
DOI: 10.1016/j.joen.2015.11.008

Abstract

Introduction: The aim was to assess survival in the Swedish population of teeth treated by nonsurgical root canal treatment during 2009.

Methods: Data from the Swedish Social Insurance Agency were analyzed by Kaplan-Meier analysis to assess cumulative tooth survival during a period of 5-6 years of all teeth that were root-filled during 2009.

Results: In 2009, 248,299 teeth were reported as root-filled. The average age of the patients at the time of the root filling was 55 years (range, 20-102 years). The teeth most frequently root-filled were the maxillary and mandibular first molars. During the 5- to 6-year period 25,228 of the root-filled teeth (10.2%) were reported to have been extracted; thus 223,071 teeth (89.8%) survived. Tooth survival was highest in the youngest age group (93.2%). The highest survival (93.0%) was for the mandibular premolars, and the lowest (87.5%) was for the mandibular molars. Teeth restored with indirect restorations within 6 months of the root filling had higher survival rates (93.1%) than those restored with a direct filling (89.6%).

Conclusions: In the adult population of Sweden, teeth that are root-filled by general practitioners under the tax-funded Swedish Social Insurance Agency have a 5- to 6-year survival rate of approximately 90%.

Keywords: Endodontics; Kaplan-Meier estimate; epidemiology; public health; tooth extraction; treatment outcome.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adult
Aged
Aged, 80 and over
Dental Restoration, Permanent / methods
Dental Restoration, Permanent / statistics & numerical data
Female
Follow-Up Studies
Humans
Kaplan-Meier Estimate
Male
Middle Aged
Root Canal Filling Materials*
Root Canal Obturation / methods*
Root Canal Therapy / methods*
Root Canal Therapy / statistics & numerical data
Sweden
Tooth Extraction
Tooth, Nonvital / epidemiology*
Tooth, Nonvital / therapy*
Treatment Outcome

Substances

Root Canal Filling Materials