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Survival of Root-filled Teeth in the Swedish Adult Population

Journal article
Authors H. Fransson
V.S. Dawson
Fredrik Frisk
L. Bjørndal
P. Jonasson
Thomas Kvist
Published in Journal of Endodontics
Volume 42
Issue 2
Pages 216-220
ISSN 0099-2399
Publication year 2016
Published at Institute of Odontology
Institute of Odontology, Section 1
Pages 216-220
Language en
Keywords Endodontics , epidemiology , Kaplan-Meier estimate , public health , tooth extraction , treatment outcome
Subject categories Dentistry


© 2016 American Association of Endodontists. 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%.

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