F. Plazza, R. Dal-Fabbro, L. Cosme-Silva, P. T. Duarte, C. Loureiro, Vitória Z. Custódio, L. Cintra, M. Duarte, J. E. Gomes‐Filho
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Twenty single-rooted human mandibular premolars with simulated root canal cavities were filled with the debris and randomly divided into ten groups based on the final irrigation protocol: 1—positive control; 2—negative control; 3—conventional irrigation (CI) with 2.5% sodium hypochlorite (NaOCl); 4—CI with 17% ethylenediaminetetraacetic acid (EDTA) followed by NaOCl; 5—three cycles of PUI for 20 s (NaOCl-NaOCl-NaOCl); 6—three cycles of PUI for 20 s (NaOCl-EDTA-NaOCl); 7—one 60 s PUI cycle (NaOCl); 8—one PUI 180 s cycle (NaOCl); 9—two cycles of PUI for 60 s (EDTA-NaOCl); and 10—two cycles of PUI for 60 s (NaOCl-EDTA). The groups were analyzed by SEM. The Kruskal-Wallis test was used at a 5% level. PUI showed a higher reduction of debris, similar to the positive control group (p > 0.05) and higher than the CI and negative control groups (p < 0.05). Regarding the exposure tubules, the CI groups were similar to the negative control group in all cavities (p > 0.05). The PUI groups were similar to the positive control group (p > 0.05). However, only groups 6, 7, and 10 were statistically different from the CI and negative control (p < 0.05). The protocols using PUI, comprising groups with three cycles of 20 s (NaOCl-EDTA-NaOCl), two cycles of 60 s (EDTA-NaOCl), or one cycle of 60 s (NaOCl), were more effective at removing debris and increasing the exposure of dentinal tubules.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"60 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Effectiveness of Passive Ultrasonic Irrigation Protocols in Simulated Complex Root Canal Cavities\",\"authors\":\"F. Plazza, R. Dal-Fabbro, L. Cosme-Silva, P. T. Duarte, C. Loureiro, Vitória Z. Custódio, L. Cintra, M. Duarte, J. E. 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引用次数: 1
摘要
本研究旨在评估不同被动超声灌洗(PUI)方案对模拟复杂根管腔中牙本质小管碎片清除和暴露的有效性。将20颗具有模拟根管腔的单根人下颌前磨牙充填碎片,根据最终的冲洗方案随机分为10组:1组为阳性对照组;2 -控制;3、2.5%次氯酸钠(NaOCl)常规灌溉;4-CI加17%乙二胺四乙酸(EDTA),再加NaOCl;5 - 3次循环PUI 20 s (NaOCl-NaOCl-NaOCl);6 - 3周期PUI 20 s (NaOCl-EDTA-NaOCl);7 - 1个60 s PUI循环(NaOCl);8 - 1 PUI 180 s循环(NaOCl);9 - 2次PUI 60 s (EDTA-NaOCl);60 s的10 - 2周期PUI (NaOCl-EDTA)。用扫描电镜对各组进行分析。Kruskal-Wallis检验采用5%水平。PUI组的碎片减少率较高,与阳性对照组相似(p < 0.05),高于CI组和阴性对照组(p < 0.05)。在暴露小管方面,CI组各空腔与阴性对照组相似(p < 0.05)。PUI组与阳性对照组相似(p < 0.05)。但只有6、7、10组与CI及阴性对照有统计学差异(p < 0.05)。使用PUI的方案,包括3个20秒周期(NaOCl-EDTA-NaOCl)、2个60秒周期(EDTA-NaOCl)或1个60秒周期(NaOCl)组,在去除碎片和增加牙本质小管暴露方面更有效。
Effectiveness of Passive Ultrasonic Irrigation Protocols in Simulated Complex Root Canal Cavities
This study aimed to evaluate the effectiveness of different Passive Ultrasonic Irrigation (PUI) protocols on debris removal and exposure of dentinal tubules in simulated complex root canal cavities. Twenty single-rooted human mandibular premolars with simulated root canal cavities were filled with the debris and randomly divided into ten groups based on the final irrigation protocol: 1—positive control; 2—negative control; 3—conventional irrigation (CI) with 2.5% sodium hypochlorite (NaOCl); 4—CI with 17% ethylenediaminetetraacetic acid (EDTA) followed by NaOCl; 5—three cycles of PUI for 20 s (NaOCl-NaOCl-NaOCl); 6—three cycles of PUI for 20 s (NaOCl-EDTA-NaOCl); 7—one 60 s PUI cycle (NaOCl); 8—one PUI 180 s cycle (NaOCl); 9—two cycles of PUI for 60 s (EDTA-NaOCl); and 10—two cycles of PUI for 60 s (NaOCl-EDTA). The groups were analyzed by SEM. The Kruskal-Wallis test was used at a 5% level. PUI showed a higher reduction of debris, similar to the positive control group (p > 0.05) and higher than the CI and negative control groups (p < 0.05). Regarding the exposure tubules, the CI groups were similar to the negative control group in all cavities (p > 0.05). The PUI groups were similar to the positive control group (p > 0.05). However, only groups 6, 7, and 10 were statistically different from the CI and negative control (p < 0.05). The protocols using PUI, comprising groups with three cycles of 20 s (NaOCl-EDTA-NaOCl), two cycles of 60 s (EDTA-NaOCl), or one cycle of 60 s (NaOCl), were more effective at removing debris and increasing the exposure of dentinal tubules.