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In vitro study of nonthermal atmospheric pressure plasma in improving the durability of the dentin–adhesive interface with an etch-and-rinse system

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Plasma Science and Technology 2020年第12期22卷 89-96页

作者： Danyang WANG Na XIE Lin WANG Peng WANG Yanping ZUO Chengfang TANG Xinyang MA Wen XU Fei LIU Qinhong WANG Yang WANG Department of Prosthodontics School of Stomatology.Xi'an Medical UniversityXi'an 710021People's Republic of China Department of Oral Medicine School of StomatologyXi'an Medical UniversityXi'an 710021People's Republic of China Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research Department of ProsthodonticsCollege of StomatologyXi'an Jiaotong UniversityXi'an 710004People's Republic of China The Molecular Virology and Viral Immunology Laboratory Xi'an Medical UniversityXi'an 710021People's Republic of China Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research Department of Pediatric DentistryCollege of StomatologyXi'an Jiaotong UniversityXi'an 710004People's Republic of China

In this study, we employed a nonthermal atmospheric pressure plasma(NTAPP) jet to evaluate the effect of plasma treatment on the durability of resin–dentin bonding under a thermocycling challenge. Furthermore, we assessed the degradation resistance of plasma-treated collagen under a sodium hypochlorite(NaClO) challenge. We assessed the beneficial effect of NTAPP treatment on the acid-etched dentin–bonding interface by testing the micro-tensile bond strength and examining the morphology. We found that the immediate bonding strength of the dentin significantly increased after NTAPP treatment. Compared with the control group, NTAPP resulted in a more prominent effect on the bonding durability of the dentin–adhesive interface after treatment for 5 or 10 s. Simultaneously, the mechanical strength of dentin collagen under the NaClO challenge was improved. Our results indicate that, in optimal conditions, NTAPP could be a promising method to protect dentin collagen and to improve the bonding durability between dentin and etch-and-rinse adhesives.

关键词： nonthermal atmospheric pressure plasma dentin bonding durability collagen hybrid layer

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