Survival of endodontically treated teeth in public dental service in Northern Finland: a practise-based register study
DOI:
https://doi.org/10.2340/aos.v83.40491Keywords:
Endodontic, root canal therapy, survival rate, tooth extractionAbstract
Objective: The aim of this study was to explore the factors associated with the survival of root canal treated teeth in a practise-based study setting in a 5-year period.
Material and methods: This retrospective study used data from the electronic patient registration system of the public dental services of the City of Oulu, Finland. The inclusion criteria for this study were patients aged ≥ 20 years who had root canal treatment (RCT) that was initiated in 2014. One RCT per patient was included in the study. A total of 713 patients met the inclusion criteria. The outcome variable for this study was the extraction of the RCT tooth during the 5-year period. Explanatory variables included age, diagnosis, tooth type (incisive, canine, premolar, molar), RCT technique (manual, motorized), time from RCT initiation to final restoration and type of final restoration (composite, glass ionomer, fixed dental prosthesis). To evaluate the association between the outcome variable and explanatory variables, Cox regression analyses were performed.
Results: The overall survival rate was 91%. The middle-aged (40–59-years-old) and the oldest (60 and older) patients had a two-fold risk of extraction compared to younger (20–40-years-old) patients. Similarly, a short length of time from RCT initiation to final restoration (0–14 days) resulted in a nearly three times higher risk of extraction compared to a longer period (≥ 90 days).
Conclusions: The 5-year survival rate of RCTs seems high. Extractions were more common among patients over 40 years of age and if the RCT was completed shortly after its initiation.
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Acta Odontologica Scandinavica publishes original research papers as well as critical reviews relevant to the diagnosis, epidemiology, health service, prevention, aetiology, pathogenesis, pathology, physiology, microbiology, development and treatment of diseases affecting tissues of the oral cavity and associated structures including papers on cause and effect or explanatory/associative relationships for experimental or observational studies.
