Navjot S Mann, Ashu Jhamb, Kamalpreet Kaur, Navneet K Mann, Manu Rana, Divya Batra
Professor and Head, Department of Conservative Dentistry and Endodontics, National Dental College and Hospital, Punjab, India.
Reader, Department of Conservative Dentistry and Endodontics, National Dental College and Hospital, Punjab, India.
J Conserv Dent. 2021 Mar-Apr;24(2):130-134. doi: 10.4103/jcd.jcd_52_21. Epub 2021 Oct 9.
To evaluate the effect of natural anticoagulants 6.5% proanthocyanidin (PA) and 25% bamboo salt on push-out bond strength (PBS) of AH Plus and BioRoot RCS to dentin.
30 single-rooted extracted human teeth were collected. After establishing the working length samples were prepared up to size F3. 5 ml of 3% NaOCl was used as irrigant during instrumentation followed by rinse with 5 ml of 17% ethylenediaminetetraacetic acid. Samples were randomly divided into groups based on the final irrigation solution: Group I - AH plus sealer group, Ia - Saline group, Ib - PA group, Ic - Bamboo salt (BS) group. Group II - BioRoot RCS group, IIa - Saline group, IIb - PA group, IIc - BS group. After obturation, samples were embedded in self-cure acrylic resin and 2 mm thick root slices were made at coronal middle and apical 3. These slices were subjected to PBS testing followed by stereomicroscopic examination for checking the mode of failure.
Kruskal-Wallis and Dunn's test.
3% NaOCl significantly decreased the bond strength of AH Plus as compared to BioRoot RCS to dentin ( < 0.05). Both PA and BS were capable of increasing the PBS of AH Plus and BioRoot RCS to NaOCl-treated dentin.
Final irrigation with antioxidants such as PA and BS eliminates the risk of reduced bond strength of sealer to root canal walls, which ensues following the use of NaOCl as an irrigant.
评估天然抗凝剂6.5%原花青素（PA）和25%竹盐对AH Plus和BioRoot RCS与牙本质之间推出粘结强度（PBS）的影响。
收集30颗单根拔除的人牙。确定工作长度后，将样本制备至F3规格。在根管预备过程中，使用5 ml 3%次氯酸钠（NaOCl）作为冲洗剂，随后用5 ml 17%乙二胺四乙酸冲洗。根据最终冲洗液将样本随机分组：第一组 - AH Plus封闭剂组，第一a组 - 生理盐水组，第一b组 - PA组，第一c组 - 竹盐（BS）组。第二组 - BioRoot RCS组，第二a组 - 生理盐水组，第二b组 - PA组，第二c组 - BS组。充填后，将样本嵌入自凝丙烯酸树脂中，并在冠中部和根尖3处制作2 mm厚的根切片。对这些切片进行PBS测试，随后进行体视显微镜检查以检查失败模式。
Kruskal-Wallis检验和Dunn检验。
与BioRoot RCS相比，3% NaOCl显著降低了AH Plus与牙本质之间的粘结强度（P < 0.05）。PA和BS均能提高AH Plus和BioRoot RCS与经NaOCl处理的牙本质之间的PBS。
用PA和BS等抗氧化剂进行最终冲洗可消除使用NaOCl作为冲洗剂后封闭剂与根管壁粘结强度降低的风险。
