Effects of Chairside Polishing and Brushing on Surface Roughness of Acrylic Denture Base Resins
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2009年第1期
论文作者：Seung-Kyun Kim Ju-Mi Park Min-Ho Lee Jae-Youn Jung
文章页码：100 - 105
摘 要：The effects of 3 chairside polishing kits and mechanical brushing on the surface roughness of 3 different acrylic denture base resins were compared. Acrylic denture base resins （auto-polymerizing, heat-polymerizing, injected heat-polymerizing resins） were examined after a tungsten carbide bur, and after chairside polishing using 3 polishing kits and pumice. The specimens were subjected to mechanical brushing using a wear tester to simulate 30 000 strokes of brushing. The surface roughness of the acrylic denture base resin specimens was measured using a contact pro-filometer. After the test, the random polished acrylic resins were evaluated by scanning electron mi-croscopy （SEM） and atomic force microscopy （AFM）. Acrylic denture base resins polished using the 3 types of polishing kits had a smoother surface than those finished with the tungsten carbide bur （p<0.05）. The surface of the resin polished by a TC cutter exceeded the Ra of 0.2 μm （p<0.05）. The auto-polymerizing resin showed a significantly higher surface roughness than the heat-polymerizing resin and injected heat-polymerizing resin （p>0.05）. In the case of polishing step wise, there was almost no change in surface roughness after brushing （p>0.05）.
Seung-Kyun Kim，Ju-Mi Park，Min-Ho Lee，Jae-Youn Jung
摘 要：The effects of 3 chairside polishing kits and mechanical brushing on the surface roughness of 3 different acrylic denture base resins were compared. Acrylic denture base resins （auto-polymerizing, heat-polymerizing, injected heat-polymerizing resins） were examined after a tungsten carbide bur, and after chairside polishing using 3 polishing kits and pumice. The specimens were subjected to mechanical brushing using a wear tester to simulate 30 000 strokes of brushing. The surface roughness of the acrylic denture base resin specimens was measured using a contact pro-filometer. After the test, the random polished acrylic resins were evaluated by scanning electron mi-croscopy （SEM） and atomic force microscopy （AFM）. Acrylic denture base resins polished using the 3 types of polishing kits had a smoother surface than those finished with the tungsten carbide bur （p<0.05）. The surface of the resin polished by a TC cutter exceeded the Ra of 0.2 μm （p<0.05）. The auto-polymerizing resin showed a significantly higher surface roughness than the heat-polymerizing resin and injected heat-polymerizing resin （p>0.05）. In the case of polishing step wise, there was almost no change in surface roughness after brushing （p>0.05）.
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