Biotechnology and Innovation in Health Program, Anhanguera University of São Paulo (UNIAN-SP).
Metropolitan University of Santos (UNIMES).
Dent Mater J. 2020 Jun 5;39(3):490-499. doi: 10.4012/dmj.2019-111. Epub 2020 Feb 29.
This study evaluated the influence of an aqueous propolis-based solution (PROP) on gap formation and bond strength of posts bonded to root canal dentin using resin cements. Endodontically-treated bovine incisors received different irrigation protocols: 1) 2.5% sodium hypochlorite (NaOCl)/17% EDTA/NaOCl; 2) saline solution (NaCl)/EDTA/0.12% chlorhexidine (CHX); 3) NaOCl/PROP/NaOCl; 4) NaCl/PROP/CHX; 5) NaCl/PROP/NaCl. Posts were then bonded with cements: RelyX ARC; Panavia F2.0; or RelyX U200 (n=10). The specimens were cross-sectioned. Gaps were assessed and performed the push-out bond strength test. Surface roughness of dentin fragments was also evaluated. Statistical analysis was performed (5%). RelyX U200 exhibited greater gap-free interfaces. Bond strength varied as a function of cements and irrigation protocols. PROP irrigation had no negative effect on the bond strength (p>0.05). Roughness increased significantly after NaOCl/EDTA/NaOCl, but remained unaltered after PROP irrigation protocols. Propolis-based irrigation protocols do not interfere in the bonding performance of posts cemented to root canal dentin.
本研究评估了一种基于水的蜂胶溶液（PROP）对使用树脂水门汀粘结到根管牙本质的桩间隙形成和粘结强度的影响。经牙髓治疗的牛切牙接受了不同的冲洗方案：1）2.5%次氯酸钠（NaOCl）/17% EDTA/NaOCl；2）生理盐水（NaCl）/EDTA/0.12%洗必泰（CHX）；3）NaOCl/PROP/NaOCl；4）NaCl/PROP/CHX；5）NaCl/PROP/NaCl。然后用以下水门汀粘结桩：RelyX ARC；Panavia F2.0；或 RelyX U200（n=10）。将标本进行横截，评估间隙并进行推出粘结强度测试。还评估了牙本质碎片的表面粗糙度。进行了统计分析（5%）。RelyX U200 表现出更大的无间隙界面。粘结强度随水门汀和冲洗方案的不同而变化。PROP 冲洗对粘结强度没有负面影响（p>0.05）。NaOCl/EDTA/NaOCl 后表面粗糙度显著增加，但 PROP 冲洗方案后保持不变。基于蜂胶的冲洗方案不会干扰粘结到根管牙本质的桩的粘结性能。
