Kandaswamy Deivanayagam, Venkateshbabu Nagendrababu, Arathi Ganesh, Roohi Riaz, Anand Suresh
Department of Conservative Dentistry and Endodontics, Sri Ramachandra University, Chennai, Tamilnadu, India.
J Conserv Dent. 2011 Jan;14(1):40-2. doi: 10.4103/0972-0707.80737.
This study has been designed to evaluate the effect of strong (MTAD) or soft (1- hydroxyethylidene - 1, 1-bisphosphonate (HEBP) final irrigating solution on the shear bond strength of AH plus sealer to coronal dentin. 17% EDTA was used as the reference.
Forty freshly extracted human maxillary first premolars were prepared using different irrigation protocols (n=10). All the test groups had 1.3% NaOCl as initial rinse and followed by specific final rinse for each group: G1 - distilled water(control), G2 - 17% EDTA, G3- 18% HEBP and G4 - MTAD. Sections of polyethylene tubes that are 3mm long were filled with freshly mixed sealer and placed on the dentin surfaces. The bonding between the sealer and dentine surface was evaluated using shear bond testing. The values were statistically evaluated using one-way ANOVA followed by Tukey's test.
Significant difference was found among the irrigating regimes. EDTA showed highest bond strength followed by HEBP and MTAD.
本研究旨在评估强效冲洗液(MTAD)或温和冲洗液(1-羟基亚乙基-1,1-二膦酸(HEBP))作为最终冲洗液对AH plus封闭剂与牙冠部牙本质之间剪切粘结强度的影响。使用17%乙二胺四乙酸(EDTA)作为对照。
采用不同冲洗方案(n = 10)对40颗新鲜拔除的人上颌第一前磨牙进行预备。所有试验组均先用1.3%次氯酸钠(NaOCl)进行初始冲洗,然后每组进行特定的最终冲洗:G1组 - 蒸馏水(对照组),G2组 - 17% EDTA,G3组 - 18% HEBP,G4组 - MTAD。将3mm长的聚乙烯管段装满新鲜混合的封闭剂,放置在牙本质表面。使用剪切粘结试验评估封闭剂与牙本质表面之间的粘结情况。采用单因素方差分析(one-way ANOVA),随后进行Tukey检验对数据进行统计学评估。
不同冲洗方案之间存在显著差异。EDTA显示出最高的粘结强度,其次是HEBP和MTAD。