Abstract
The purpose of the study was to examine the factors affecting Endodontic Therapy Failure (ETF). The study was descriptive cross-sectional conducted at College of Dental Science & Research Centre.
 
 Dental school in Pune, India. In the present study, 90 patients were analyzed in the treatment ward. According to the results, the highest endodontic failure was observed in 41-50 years age group (41.11%) and the least was in 21-30 (24.44%). According to the tooth type, most endodontic failures were observed in maxillary molars (44.4%), mandibular molars (20%) and maxillary premolars (15.5%). Endodontic treatment by general dental practitioners (GDPs) showed the highest failure rate (78.8%). The factors contributing to the most common endodontic problems were under-filled canals (33.3%) and unfilled and missed canals (17.7%). The study concluded that ETF occurred when the treatment was not according to the accepted standards. The main causes of ETF are microbial infection in the root canal system and these patients' not attending the specialists.
Highlights
Endodontic therapy is a treatment sequence for the infected pulp of a tooth that eliminates infection and protects the infected tooth against the subsequent microbial invasion (Cohen & Hargreaves, 2006)
Endodontic Therapy Failure (ETF) occurs when the treatment is not performed according to the accepted standards (Seltzer, Bender, & Turkenkopf, 1963; Sundqvist, Figdor, Persson, & Sjögren, 1998)
The results in line with these studies showed that root canal filling quality is effective in endodontic treatment (Noor, Maxood, & Kaleem, 2008; Nie & Lin, 1999)
Summary
Endodontic therapy is a treatment sequence for the infected pulp of a tooth that eliminates infection and protects the infected tooth against the subsequent microbial invasion (Cohen & Hargreaves, 2006). Filling clean and contaminated canals is done using inert filler such as gutta-percha and typically zinc oxide eugenol (Marciano et al, 2011) Endodontics include both primary and secondary endodontic treatment as well as periradicular surgery, generally used for the teeth that can still survive (Setzer & Kim, 2014; Kishen, Peters, Zehnder, Diogenes, & Nair, 2016). The keys to success in endodontic treatment are complete sealing of the root canal space and complete extraction of the infected root tissues of the pulp and microorganisms. Many factors affect ETF, such as necrotic pulp of periradicular infection, periodontal disease, root fracture, broken instruments, mechanical perforations, root canal underfillings, and missed or unfilled canals (Siqueira, Rôças, & Ricucci, 2019)
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