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Physical properties of resin-reinforced glass ionomer cement modified with micro and nano-hydroxyapatite

 Lee, Jong-Jin  ;  Lee, Yong-Keun  ;  Choi, Byung-Jai  ;  Lee, Jae-Ho  ;  Choi, Hyung-Jun  ;  Son, Heung-Kyu  ;  Hwang, Ji-Won  ;  Kim, Seong-Oh 
 Journal of Nanoscience and Nanotechnology, Vol.10(8) : 5270-5276, 2010 
Journal Title
 Journal of Nanoscience and Nanotechnology 
Issue Date
Hydroxyapatite is a biologically compatible material and a major component of dental enamel and bone tissue. Because of its biocompatibility and structural similarity to human teeth and the skeletal system, a number of dental studies have evaluated its application as a bone substitute or dental restorative material. This study was to evaluate the differences in bonding strength and resistance to demineralization between micro-hydroxyapatite and nano-hydroxyapatite added to self-cured resin-reinforced/modified glass ionomer cement. RelyX was used as the base glass ionomer cement material and for the control group. 10% micro-hydroxyapatite added glass ionomer cement was named experimental group 1, and 10% nano-hydroxyapatite added glass ionomer cement was named experimental group 2. Physical tests for ISO9917-1:2007 in each group was acceptable, except the setting time of nano-hydroxyapatite added glass ionomer cement, which exceeded maximum setting time. Bonding strength was greatest in nano-hydroxyapatite glass ionomer cement, and cohesive failure was common in all specimens. When fractured surface was observed under SEM, spherical particles were observed in experimental groups containing hydroxyapatite particles, and they were more prevalent in nano-HA added glass ionomer cement group than in micro-hydroxyapatite added group. Both experimental groups exhibited greater resistance to demineralization compared to the control group, and there was no significant difference between the experimental groups. Under SEM, nano-hydroxyapatite added glass ionomer cement exhibited increased resistance to demineralization compared to micro-hydroxyapatite added glass ionomer cement
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2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Pediatric Dentistry (소아치과학교실) > 1. Journal Papers
Yonsei Authors
김성오(Kim, Seong Oh) ORCID logo https://orcid.org/0000-0002-8620-1377
손흥규(Son, Heung Kyu)
이용근(Lee, Yong Keun)
이제호(Lee, Jae Ho) ORCID logo https://orcid.org/0000-0002-1556-3485
최병재(Choi, Byung Jai)
최형준(Choi, Hyung Jun) ORCID logo https://orcid.org/0000-0002-3315-6912
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