RESUMO
Background: To assess the frequency of flare-ups and recognize the risk factors comprising age, initial diagnosis, number of root canals, tooth type, gender, the type of irrigation regimen, the number of visits and treatment modality, in patients who expected root canal treatment from May 2015 to May 2017
Materials and Methods: Records of 454 teeth belonging to 302 patients treated by endodontics expert throughout 2-year period were kept. Tooth, patient, and treatment characteristics were assessed and the relations between these characteristics and flare-ups were studied. Statistical analysis was carried out by using Chi-square test, regression analyses, and exact test
Results:The incidence of flare-ups was 16 [3.5 %] out of 454 teeth that had endodontic treatment. Pulpal necrosis without periapical pathosis was the most mutual symptom for flare-up [5.9 %] [P < 0.01]. Teeth undergoing multiple visits had a higher risk of developing flare-ups compared to those with single appointments [OR: 3.27, CI: 1.21-6.91, p<0.01]. There were similarly no statistically significant differences in the frequency of flare-ups as regards to age, tooth type, gender, treatment modality, number of root canals, and the irrigation solutions that utilized amid the treatment
Conclusions:The frequency of flare-up is insignificant when teeth are treated in one visit. Absence of a periapical lesion in necrotic teeth is a significant factor for flare-ups
RESUMO
Background: The purpose of this study was to assess. The influence of diverse irrigation protocols on resin sealer bond strength to dentin
Materials and Methods: A sum of 36 single-established andibular premolar teeth were utilized. Root channel forming strategies were applied with ProTaper rotary instruments [Dentsply Maillefer] up to measure F4. The prepared models were then arbitrarily collected into 3 groups [n =12]. For each group, an ultrasonic tip [measure 15, 0.02 taper] which was additionally covered with an epoxy resin based sealer and put 2 mm shorter than the working length. The sealer was then actuated for 10 s. A push-out test was utilized to gauge the bond strength between the root canal dentine and the sealer. Kruskal-Wallis test was used to assess the push-out bond strength of epoxy based sealer [P=0.05]. The failure mode information were statistically examined utilizing Pearson's chi square test [P=0.05]
Results: Kruskal-Wallis test showed that there were statistically insignificant difference between the push out bond strength values of 3 mm [p=0.149] and 6 mm [P=0.052] , for group one and two, while there was a statistically significant difference with the push out bond strength value of 9 mm [P=0.029]. Pearson's chi square test showed statistically significant differences for the failure types among the groups
Conclusion: Several epoxy resin based sealers actuated ultrasonically demonstrated comparative bond strength in oval formed root canals. Apical areas for all groups have higher push out bond strength standards than middle and coronal segments