背景:表面张力和接触角特性,在确定冲洗溶液穿透牙本质表面和牙本质小管的有效性方面起着至关重要的作用,对于开发新的灌溉解决方案及其偏好非常重要。本研究的目的是比较牙髓中使用的不同灌溉溶液的表面张力和接触角特性,在牙本质表面和牙本质小管内。
方法:在本研究中,5.25%次氯酸钠(NaOCl)的接触角和表面张力,17%乙二胺四乙酸(EDTA),2%氯己定(CHX),5%硼酸(BA),0.02%次氯酸(HOCl),0.2%二氧化氯(ClO2),BiopureMTAD,QMix解决方案,和蒸馏水(对照组)进行测量。使用测角器装置(AttensionThetaLite张力计,BiolinScientific,美国),采用固着滴法在预先准备好的牙本质表面上测量接触角,和表面张力的吊滴法。
结果:接触角测量显示,MTAD的接触角值之间没有统计学上的显着差异,ClO2和CHX或NaOCl之间,QMix,BA,和HOCl(p>0.05)。然而,EDTA的接触角明显大于MTAD,ClO2,CHX,NaOCl,QMix,BA,和HOCl(p<0.05)。此外,牙质与蒸馏水的接触角大于所有其他测试溶液的接触角(p<0.05)。表面张力测量显示QMix和MTAD的表面张力值在统计学上相似(p>0.05)。CHX的表面张力低于蒸馏水和HOCl(p<0.05)。它的表面张力也低于ClO2,NaOCl,和BA(p<0.05)。此外,用EDTA处理的样品的表面张力大于所有其他测试溶液的表面张力(p<0.05)。
结论:液体的表面张力与不同表面的接触角之间的直接线性关系可能并不总是成立,和这些值应该独立考虑每个解决方案在不同的表面。考虑到根管牙本质冲洗液的接触角和表面张力特性,可以建议临床使用ClO2可以推荐超过NaOCl,同样,BA可以推荐超过EDTA。
BACKGROUND: Surface tension and contact angle properties, which play a crucial role in determining the effectiveness of irrigation solutions in penetrating dentin surfaces and dentin tubules, are highly important for the development of new irrigation solutions and their preferences. The aim of the current study was to compare the surface tension and contact angle properties of different irrigation solutions used in endodontics, both on the dentin surface and within dentin tubules.
METHODS: In this study, the contact angles and surface tensions of 5.25% sodium hypochlorite (NaOCl), 17% ethylenediaminetetraacetic acid (EDTA), 2% chlorhexidine (CHX), 5% boric acid (BA), 0.02% hypochlorous acid (HOCl), 0.2% chlorine dioxide (ClO2), Biopure MTAD, QMix solutions, and distilled water (control group) were measured. Measurements were conducted using a goniometer device (Attension Theta Lite Tensiometer, Biolin Scientific, USA), employing the sessile drop method for contact angle measurements on pre-prepared dentin surfaces, and the pendant drop method for surface tension.
RESULTS: Contact angle measurements revealed no statistically significant differences between the contact angle values of MTAD, ClO2, and CHX or between NaOCl, QMix, BA, and HOCl (p > 0.05). However, EDTA exhibited a significantly greater contact angle than did MTAD, ClO2, CHX, NaOCl, QMix, BA, and HOCl (p < 0.05). Furthermore, the contact angle of dentin with distilled water was greater than that with all other solutions tested (p < 0.05). Surface tension measurements revealed that the surface tension values of QMix and MTAD were statistically similar (p > 0.05). CHX exhibited lower surface tension than distilled water and HOCl (p < 0.05), and it also had lower surface tension than ClO2, NaOCl, and BA (p < 0.05). Additionally, the surface tension of the samples treated with EDTA was greater than that of all other solutions tested (p < 0.05).
CONCLUSIONS: The direct linear relationship between the surface tension of liquids and contact angles on different surfaces may not always hold true, and these values should be considered independently for each solution on various surfaces. Considering the contact angles and surface tension properties of irrigation solutions with root canal dentin, it can be suggested for clinical use that ClO2 could be recommended over NaOCl, and similarly, BA could be recommended over EDTA.