不同清洁措施对唾液污染或血液污染氧化锆粘结树脂水泥的效果。

Effectiveness of different cleaning measures on the bonding of resin cement to saliva-contaminated or blood-contaminated zirconia.

机构信息

The Dental College of Georgia, Augusta University, Augusta, GA, USA.

Department of Endodontology and Operative Dentistry, School and Hospital of Stomatology, Peking University, Beijing, China.

出版信息

J Dent. 2022 May;120:104084. doi: 10.1016/j.jdent.2022.104084. Epub 2022 Mar 3.

DOI:10.1016/j.jdent.2022.104084

PMID:35248674

Abstract

OBJECTIVE

To investigate the effectiveness of different cleaning measures on the bonding of resin cement to saliva- or blood-contaminated zirconia.

METHODS

One hundred and forty-one specimens (10 × 10 × 1.5 mm) were fabricated from KATANA zirconia blocks and contaminated with human saliva or sheep blood. Six cleaning measures were examined: water-rinse, HPO, 5.25% NaOCl, ZirClean, Ivoclean and KATANA Cleaner. Tensile bond strength was evaluated for 13 groups (N=10): six cleaning measures against two contaminations (12 experimental groups) and one uncontaminated control group. Scanning electron microscopy was used to observe the control and water-rinsed specimen surfaces. X-ray photoelectron spectroscopy (XPS) was conducted to identify carbon (C1s), nitrogen (N1s), phosphorous (P2p) and zirconium (Zr3d) peaks, from which the elemental ratios C/Zr, N/Zr and P/Zr were calculated.

RESULTS

Although water-rinsing removed most of the contaminants from the zirconia surface, bond strength of resin cement was significantly lower compared with the control. Phosphoric acid was ineffective and NaOCl was less reliable in restoring bond strength. The three commercial cleaners (ZirClean, Ivoclean, KATANA Cleaner) out-performed the other cleaning measures and restored the bond strength of resin cement to zirconia except for the use of Zirclean on blood-contaminated surfaces. N/Zr decreased for all cleaned specimens and P/Zr ratio increased for phosphoric acid and KATANA Cleaner groups. Differences in elemental ratios could indicate different cleaning mechanisms for the zirconia cleaners.

CONCLUSION

All three commercial zirconia cleaners are effective in decontaminating saliva-contaminated or blood-contaminated zirconia and increasing the bond strength of resin cement to contaminated zirconia.

CLINICAL SIGNIFICANCE

The use of water, phosphoric acid or concentrated sodium hypochorite for cleaning saliva- or blood-contaminated dental zirconia is not recommended. ZirClean works well on decontamination of saliva-contaminated zirconia. Ivoclean or KATANA Cleaner are useful for decontamination of both saliva- and blood-contaminated zirconia during the intraoral try-in stage to recover the original bond strength of cementation.

摘要

目的

研究不同清洁措施对唾液或血液污染氧化锆粘结树脂水泥的效果。

方法

从 KATANA 氧化锆块中制备 141 个标本（10×10×1.5mm），并污染人唾液或绵羊血液。检查了六种清洁措施：水冲洗、HPO、5.25% NaOCl、ZirClean、Ivoclean 和 KATANA 清洁剂。对 13 组（N=10）进行了拉伸粘结强度评估：六种清洁措施针对两种污染（12 个实验组）和一个无污染对照组。使用扫描电子显微镜观察对照和水冲洗标本表面。X 射线光电子能谱（XPS）用于识别碳（C1s）、氮（N1s）、磷（P2p）和锆（Zr3d）峰，从中计算出元素比 C/Zr、N/Zr 和 P/Zr。

结果

尽管水冲洗可从氧化锆表面去除大部分污染物，但与对照组相比，树脂水泥的粘结强度明显降低。磷酸无效，次氯酸钠在恢复粘结强度方面效果较差。三种商业清洁剂（ZirClean、Ivoclean、KATANA 清洁剂）的性能优于其他清洁措施，除了在血液污染表面使用 Zirclean 外，还恢复了树脂水泥对氧化锆的粘结强度。所有清洗后的标本 N/Zr 均降低，磷酸和 KATANA 清洁剂组 P/Zr 比值升高。元素比的差异可能表明氧化锆清洁剂的清洁机制不同。