Abstract
The aim of the present study was to determine radiographically the different reasons and problems of endodontic treatment failure. The periapical radiographs of 100 patients with one hundred teeth (130 root canals) were examined to identify the problems and failures of endodontic treatment. The various reasons of failure that is under filling, poor filling, over filling and presence of procedural errors were recorded for each root filled canal. Chi square test was used to determine statistical significance between different parameters. Under fillings were found in 46.9% of the root canals. The percentage of poor fillings and over fillings were 28.5% and 13% respectively. Separated instruments and strip perforations were present in 4% and 3% of the teeth, while the presence of furcal perforation and coronal leakage was observed in one case each (1%).Endodontic problems and failures were most commonly observed in molars compare to anterior and premolar teeth. Mesiobuccal, mesiolingual and distobuccal root canals were the most frequently canals with endodontic problems and failures. The relationship between mesiobuccal, mesiolingual and distal canals in mandibular molars and mesiobuccal, distobuccal and palatal canals in maxillary molars in terms of endodontic failures were statistically significant by chi square analysis (P≤0.05). The most common cause of endodontic treatment failure was under filling followed by poor filling and over filling and first molar was the most frequently involved tooth with endodontic problems and failures.
Highlights
The studies reported low quality of root canal fillings carried out by general dental practitioners.[21]This may be due to not following the principles and standard techniques of endodontic treatment that were taught at dental schools.[22]. A study in England reported that general dental practitioners need more post graduate courses and continueeducation to improve their clinical skills in endodontics.The success rate of teeth treated by endodontists was significantly higher than those treated by general dental practitioners
This study showed that high skilled dentists are less likely to perform procedural errors that may compromise prognosis
Adequate density of root canal filling is an important factor for long term success of endodontic treatment.Poor fillings can lead to endodontic treatment failure due to microleakage along the root canal walls. [28]Poor root fillings occurred in 28.5% in the present study
Summary
The aim of the present study was to determine radiographically the different reasons and problems of endodontic treatment failure. Methods: The periapical radiographs of 100 patients with one hundred teeth (130 root canals) were examined to identify the problems and failures of endodontic treatment. The various reasons of failure that is under filling, poor filling, over filling and presence of procedural errors were recorded for each root filled canal. Mesiobuccal, mesiolingual and distobuccal root canals were the most frequently canals with endodontic problems and failures. The relationship between mesiobuccal, mesiolingual and distal canals in mandibular molars and mesiobuccal, distobuccal and palatal canals in maxillary molars in terms of endodontic failures were statistically significant by chi square analysis (P≤0.05).
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