J Korean Acad Oral Health.  2017 Sep;41(3):201-207. 10.11149/jkaoh.2017.41.3.201.

Survival of individual teeth after non-surgical endodontic treatment

Affiliations
  • 1Department of Social and Humanity in Dentistry, Wonkwang University School of Dentistry, Iksan, Korea. shinhosung@gmail.com

Abstract


OBJECTIVES
The present study aimed to estimate the survival rate of teeth after non-surgical root canal treatment and to investigate the effect of income on the tooth survival rate.
METHODS
The study included 1,414.668 endodontically treated teeth from 1,193.666 persons enrolled in the National Health Insurance Service in 2002. A survival analysis of the teeth was performed using the Kaplan-Meier method. The survival rates were calculated using a follow-up period of 11 years after the root canal treatment.
RESULTS
In the present study, the 11-year cumulative survival rate of teeth after non-surgical endodontic treatments was 86.90%. The survival rates of teeth tended to decrease for the posterior teeth; the maxillary teeth showed a lower survival rate than that of the mandibular teeth. The teeth with the highest survival rates were the mandibular left lateral incisor, maxillary right incisor, mandibular right lateral incisor, and maxillary left central incisor, in that order. The lowest survival rates were shown by the mandibular second molar, maxillary second molar, maxillary first molar, and mandibular first molar, in that order. The survival rate of the first molar (#16, #26, #36, #46) was higher in the low-income group than in the high-income group (P<0.001).
CONCLUSIONS
This study represents the outcome pattern of root canal treatment among South Korean individuals. These study findings can be used as comparative data for clinical decision making about endodontic treatment.

Keyword

Cumulative survival rate; Kaplan-Meier Survival method; Non-surgical endodontic treatments; Tooth extraction

MeSH Terms

Clinical Decision-Making
Dental Pulp Cavity
Follow-Up Studies
Humans
Incisor
Methods
Molar
National Health Programs
Survival Rate
Tooth Extraction
Tooth*

Figure

  • Fig. 1. Survival rate of endodontic treatment of first molars by income (2002-2013). *By Kaplan-Meier method.


Reference

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