Aim: The present study evaluated the effect of different final irrigation protocols on the apical sealing ability of bioceramic and epoxy resin-based sealers. Materials and methods: Thirty single-rooted mandibular premolars were instrumented using ProTaper Next rotary files. Teeth were randomly divided into three groups according to the final irrigation regimen; Group I: 5 ml 0.2% CNPs/3 min, Group II: 2.5 ml 0.2% CNPs/1.5 min followed by 2.5 ml 17% EDTA/1.5 min, and Group III: 5 ml 17% EDTA/3min. All groups were subdivided into two subgroups based on the obturation material; Subgroup A: gutta-percha/Sure-Seal Root BC Sealer and Subgroup B: gutta-percha/AH Plus. The apical sealing ability was assessed using modified silver staining technique. Samples were sectioned longitudinally and examined using SEM. Results: Sure-Seal Root BC sealer showed significantly lower nanoleakage compared to AH Plus. No significant difference was recorded in the nanoleakage of Sure-Seal Root BC sealer among the three groups, while AH Plus showed a significantly higher nanoleakage in the EDTA group. Conclusions: The apical sealing ability of bioceramic sealers is better than that of epoxy resin-based sealers. The type of the final irrigating solution seems to affect the post-obturation seal of both AH Plus and Sure-Seal Root BC sealer.
Introduction: The purpose of the study was to compare the effectiveness of pulp revascularization and MTA apexification in the treatment of necrotic anterior teeth with periapical abscess. Methods: twenty-two patients, each with necrotic immature permanent anterior teeth were randomly divided into 2 groups (Group A apexification and group B regeneration) 11 patient per each group. A triantibiotic paste (metronidazole, ciprofloxacin and doxycycline) was used to disinfect the canal for 21 days. MTA plug was used for apexification for group A. Blood clot regeneration was used for the group B. The patients were recalled periodically for follow up. Results: The regeneration group showed better results in, increase in root length, increase in dentin thickness in mm, and in percentage, while MTA apexification group showed better results in decrease in apical diameter in millimeter. Conclusions: Both regeneration and MTA apexification are reliable procedures for treating necrotic immature anterior teeth with open apices.
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.