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Effect of EDTA on apical leakage of resin based root canal sealer | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 22, Issue 4, 2010, Pages 10-13 | ||
| Authors | ||
| Ammar Aziz; Anas F. M. Al-Aubaydi | ||
| Abstract | ||
| ABSTRACTBackground: Cleaning root canal is not possible without using proper irrigation. The aim of this, in vitro, study was toinvestigate the application time of EDTA when it is used in combination with NaOCl as final irrigant on the apicalleakage when AH26 root canal sealer.Material and methods: Thirty two extracted human single-rooted premolar teeth were used. After instrumentation theteeth were randomly divided into four groups (n=8) according to final irrigation. In group I, irrigation was 5.25% NaOClfor 5 min, group II, irrigation was 5.25% NaOCl for 30 sec+ 17% EDTA for 30 sec+ 5.25% NaOCl for 30 sec, and sameirrigation procedure of group II were performed for both groups III and IV except increasing the time of irrigation of17% EDTA (1 min and 5 min respectively). The teeth in each group were obturated by lateral condensation with guttapercha and AH26 sealer. The crown cavities of all teeth were sealed with temporary filling. The teeth were stored inthe incubator100% humidity and 37º C for 48 hours. The teeth roots were covered with nail polish except 2-3millimeters from the roots apices then were placed in 2% methylene blue dye and kept in incubator for 48 hours.After that the teeth were sectioned longitudinally and the dye penetration was measured.Results: statistical significant difference was found between groups (p<0.001). Group I scored the highestmicroleakage followed by group II and III and group IV had lest microleakage.Conclusion: when AH26 epoxy resin based sealer is used in obturation of root canal system, it is better to usecombination of NaOCl and EDTA as final irrigation, and the irrigation time for EDTA preferred to be not less than 5 minto improve the apical seal.Keywords: EDTA, apical leakage, root canal sealer. (J Bagh Coll Dentistry 2010;22(4):10-13). | ||
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