title: Effects of non-thermal atmospheric pressure pulsed plasma on the adhesion and durability of resin composite to dentin.
abstract: This study investigated the effect of low-power, non-thermal atmospheric pressure plasma (NT-APP) treatments, in pulsed and conventional modes, on the adhesion of resin composite to dentin and on the durability of the bond between resin composite and dentin. A pencil-type NT-APP jet was applied in pulsed and conventional modes to acid-etched dentin. The microtensile bond strength (MTBS) of resin composite to dentin was evaluated at 24 h and after thermocycling in one control group (no plasma) and in two experimental groups (pulsed plasma and conventional plasma groups) using the Scotchbond Multi-Purpose Plus Adhesive System. Data were analyzed using two-factor repeated-measures anova and Weibull statistics. Fractured surfaces and the bonded interfaces were evaluated using a field-emission scanning electron microscope. Although there were no significant differences between the plasma treatment groups, the plasma treatment improved the MTBS compared with the control group. After thermocycling, the MTBS did not decrease in the control or conventional plasma group but increased in the pulsed plasma group. Thermocycling increased the Weibull moduli of plasma-treated groups. In conclusion, plasma treatment using NT-APP improved the adhesion of resin composite to dentin. Using a pulsed energy source, the energy delivered to the dentin was effectively reduced without any reduction in bond strength or durability.
authors.affiliation: Department of Dental Biomaterials Science, Seoul National University School of Dentistry & Dental Research Institute, Seoul, Korea.
authors.forename: Geum-Jun
authors.initials: GJ
authors.lastname: Han
authors.forename: Jae-Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Sung-No
authors.initials: SN
authors.lastname: Chung
authors.forename: Bae-Hyeock
authors.initials: BH
authors.lastname: Chun
authors.forename: Chang-Keun
authors.initials: CK
authors.lastname: Kim
authors.forename: Deog-Gyu
authors.initials: DG
authors.lastname: Seo
authors.forename: Ho-Hyun
authors.initials: HH
authors.lastname: Son
authors.forename: Byeong-Hoon
authors.initials: BH
authors.lastname: Cho
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D001274:Atmospheric Pressure; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry*; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D055119:Elastic Modulus; D006371:Helium / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D058626:Plasma Gases / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength; D013997:Time Factors
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D058626:Plasma Gases; D019279:Resin Cements; C425844:Scotchbond Multi-Purpose Plus; D006371:Helium
keywords: adhesion; dentin; durability; microtensile bond strength; non-thermal atmospheric pressure pulsed plasma