SCIENTIFIC ARTICLESA New Solution for the Removal of the Smear Layer
Section snippets
MATERIALS AND METHODS
Forty-eight extracted maxillary and mandibular single-rooted noncarious human teeth were used for this study. Teeth with previous coronal restorations or root canal treatment were excluded. The teeth were randomly divided into 4 groups of 12 teeth each according to the type of irrigants used during and after instrumentation (Table 1).
After preparing a conventional access preparation for each tooth, a K-type file (size 10 or 15) was used to determine the working length by penetrating the apical
RESULTS
Removal of smear layer from the surfaces of root canals revealed the presence of more abundant and larger dentinal tubules in the coronal third of root canals compared with those seen in the middle and apical thirds of the root canal system. The dentinal tubules in the apical third of the canals were smaller and fewer than those observed in the rest of the root canals (Fig. 1). In addition, removal of the smear layer showed the presence of many lateral canals in the apical thirds of the root
DISCUSSION
The main purpose of this investigation was to evaluate the effectiveness of an irrigant solution with ingredients capable of disinfecting the dentin, removing the smear layer, opening the dentinal tubules and allowing the antibacterial agents to penetrate the entire root canal system. Various antibiotics such as penicillin, bacitracin, and streptomycin have been used in the past to disinfect the root canals (11). However, because of the ineffectiveness of these antibiotics against the flora of
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Biological and chemical properties of 2-in-1 calcium-chelating and antibacterial root canal irrigants
2023, Journal of DentistryA Comparative Evaluation of Efficacy of Root Surface Biomodification using MTAD, MTAD+I‑PRF on Adhesion of Fibrin Clot to Dentin Sem Study
2024, Journal of Pharmacy and Bioallied SciencesEvaluating the Effectiveness of Different Irrigant Solutions in Removing the Smear Layer and Opening the Dentinal Canals: A Scanning Electron Microscopic Study
2024, Journal of International Oral Health
The authors thank Dr. Hossain Mohammadi for providing hundreds of extracted teeth for this project.