alexa Evaluation Of Mechanical Properties And Cell Response Of Glass Infiltrated Zirconia After Sandblasting | 61099
ISSN: 2161-1122

Dentistry
Open Access

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19th American Dental Congress
December 08-10, 2016 Phoenix, USA

Nguyen Thi Phuong Thao
Chonnam National University, South Korea
ScientificTracks Abstracts: Dentistry
DOI: 10.4172/2161-1122.C1.008
Abstract
Zirconia surface modification techniques, especially, the glass infiltrated zirconia method is one of the most effective methods of producing a composite with more desirable properties than the individual components. The aim of this in vitro study was to evaluate the mechanical properties and initial cell response of glass infiltrated zirconia ceramics before and after sandblasting. One hundred zirconia specimens were divided into the following 4 groups, according to the surface treatments: untreated zirconia (control), sandblasted zirconia (S), glass infiltrated zirconia (G), and sandblasted glass infiltrated zirconia (GS). Surface roughness, biaxial flexural strength, hardness, osteoblast cells attachment and proliferation were evaluated. One-way analysis of variance (ANOVA) and Tukey’s HSD pair-wise multiple comparisons were performed on all the tests. The GS group showed a slight decrease in hardness, but revealed the improvement of flexural strength (686.2 MPa). After sandblasting, the GS group had the highest surface roughness (Ra=1.24 μm) compared to the other groups, and supported an enhanced osteoblast cells response over the untreated zirconia. FESEM images of the glass infiltrated zirconia surface microstructure showed a smooth surface before sandblasting. After sandblasting, the new surface exhibited roughness with the formation of shallow irregularities. The results of this study indicated the beneficial influence of graded structures in the design of zirconia implants. The glass infiltrating process could be used as a promising method to enhance the mechanical properties with better surface roughness of zirconia implants for osteoblast cells response. Limitations of this study are related to the experimental conditions which may differ from the actual clinical situation.
Biography

Nguyen Thi Phuong Thao was graduated from Viet Bac High School in Langson, Viet Nam in September 2008 and from Guangxi Medical University, College of Stomatology at Nanning, China with a Bachelor of Science in Dentistry in September 2014. In 2014, she has received a Research Scholarship granted by the National Research Foundation of Korea and remained at Chonam National University to complete her Master of Science degree in Dentistry in August 2016.

Email: [email protected]

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