In vitro study of nonthermal atmospheric pressure plasma in improving the durability of the dentin-a

• 作 者: Danyang WANG Na XIE Lin WANG Peng WANG Yanping ZUO Chengfang TANG Xinyang MA Wen XU Fei LIU Qinhong WANG Yang WANG
• 机 构: Department of Prosthodontics, School of Stomatology, Xi’an Medical University, Xi’an 710021, People’
• 出 处: 等离子体科学和技术（英文版）
• 发表日期: 2020年12期
• 关键词: nonthermal atmospheric pressure plasma dentin bonding durability collagen hybrid

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 (NaC10) 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.