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http://dx.doi.org/10.4047/jkap.2014.52.3.211

Effects of SLA surface treated with NaOH on surface characteristics and response of osteoblast-like cell  

Park, Jin-Chul (Graduate School of Clinical Dental Medicine, Korea University)
Kim, Joo-Hyeun (Department of Prosthodontics, School of Dentistry, Pusan National University)
Kang, Eun-Sook (Department of Prosthodontics, In-Je University Haeundae Paik Hospital)
Ryu, Jae-Jun (Division of Prosthodontics, Department of Dentistry, Korea University Anam Hospital,Medical Center)
Huh, Jung-Bo (Department of Prosthodontics, School of Dentistry, Pusan National University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.52, no.3, 2014 , pp. 211-221 More about this Journal
Abstract
Purpose: The purpose of this study was to evaluate the surface characteristics and response of osteoblast-like cell at SLA surface treated with NaOH. Materials and methods: Three kinds of specimens were fabricated for the experiment groups. Control group was a machined surface, SLA group was a conventionally SLA treated surface, and SLA/NaOH gorup was SLA surface treated with NaOH. To evaluate the surface characteristics, the surface elemental composition (XPS), surface roughness and surface contact angle were evaluated in each group. And the cytotoxicity, cell adhesion, cell proliferation and ATP activity of osteoblast-like cells (MG-63 cells) were compared in each group for evaluatation of the cell responses. Statistical comparisons between groups were carried out via one-way ANOVA using the SPSS software (SPSS Inc., Chicago, USA), and then performed multiple comparisons. The differences were considered statistically significant at P<.05. Results: SLA surface treated with NaOH (SLA / NaOH group) was changed to hydrophilic surface. All groups did not show the cytotoxicity to the MG-63. In cell adhesion studies, SLA / NaOH group showed the higher degree of adhesion than anothers (P<.05), Up to 7 days of incubation, the proliferation was showed the increasing tendency in all groups but SLA / NaOH group showed the highest cell proliferation between the three groups (P<.05). At 7 days of incubation, there was no difference in ALP activities between the three groups, but at 14 days, SLA / NaOH group showed significant increase in ALP activities (P<.05). Conclusion: In this study, SLA surface treated with NaOH promoted cell adhesion, proliferation and differentiation. It means that SLA/NaOH group is possible to promote osseointegration of implants.
Keywords
SLA surface; NaOH; hydrophilic; MG-63 cell; Cell culture;
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