The purpose of this in vitro study was to compare the efficacy of 24% ethylenediaminetetraacetic acid (EDTA) gel and 17% EDTA solution in cleaning dentine walls after root canal instrumentation. Thirty human canine teeth were divided into three groups of 10 teeth each. In Group 1, 1% sodium hypochlorite was used as the irrigating solution; in Group 2, 1% sodium hypochlorite was used with 17% EDTA solution; and in Group 3, 1% sodium hypochlorite was used with 24% EDTA gel. The presence of a smear layer was analysed after instrumentation using scanning electron microscopy. The Kruskal-Wallis test revealed a statistical difference (P < 0.05) between Groups 1 and 2, and also between Groups 1 and 3. No difference was observed between Groups 2 and 3 (P > 0.05). The results indicate that 1% sodium hypochlorite alone does not remove the smear layer and that there was no statistical difference between EDTA gel and EDTA solution in smear layer removal.
The purpose of this study was to demonstrate the importance of knowledge of the internal anatomy of root canals for the success of endodontic treatment. Lack of knowledge of anatomic variations and their characteristics in different teeth has been pointed out as one of the main causes of endodontic therapy failure. In this report, the authors describe the endodontic treatment of a mandibular first molar with five root canals, evaluate the rate of occurrence of this number of canals, and discuss the importance of their identification and treatment.
The aim of the present study was to evaluate the location of the mental foramen, using panoramic x-rays from children with ages among ten to 12 years. In a first moment, the radiographs were digitalized and measures were accomplished in the Image Tool 1.27 software, being verified the distance between the mandible border and the mental foramen inferior portion, the total height of the alveolar ridge, and also the distance between the medium portion of the mental foramen and a traced line of the nasal spine previously to a point located in the most inferior portion of the mentus. In children with ages among ten and 11 years, the percentage occurrence of the mental foramen location was in the inferior third of the alveolar ridge and, in the 12 years age group, it was in the medium third. Authors concluded that the position of the mental foramen modifies with the increase of the age, being important the analysis of the precisely location of the mental foramen in Pediatric Dentistry.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.