期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 18, 页码 9598-9607出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b03431
关键词
graphene; titanium alloy; pi-pi stacking; dental implant; osseointegration
资金
- POSCO
- Midcareer Researcher Program of the National Research Foundation - Korean government (MEST)
- Bio Technology Development Program of the National Research Foundation - Korean government (MEST) [2012R1A2 A2A06045773, 2012M3A9C6049791]
- Medical Technology Development Program of the National Research Foundation - Korean government (MEST) [2012R1A2 A2A06045773, 2012M3A9C6049791]
Titanitim (Ti) and its alloys with a high mechanical strength and a small diameter an be effectively exploited for minimally invasive dental implantation. Here, we report a. multipass: caliber-rolled Ti alloy of Til3Nh13Zr (MPCR-TNZ) with a high mechanical strength and strong fatigue characteristies. For further dental applications, MPCR-TNZ was surface-modified With reduced,graphene, oxide (RGO) and loaded with osteogenic dexamethasone (Dex) via pi-pi stacking on the graphitic domain of RGO, The Dex-loaded RGO-MPCR-TNZ (Dex/RGO-MFCR-TN) resulted in significantly enhanced gi-owth and differentiation of MC3T3-E1 cells into osteoblasts, which was confirthed by Alizarin red staining, alkaline phosphatase activity test, immunocytochemistry, and real-time PCR. Moreover, we could confirm the feasibility of Dex/RGO-MPCR-TNZ from the implantation test of a prototype of a dental implant to an artificial bone block for clinical dental applications.
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