ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Several studies have reported the on dental erosive potential of sports drinks with a lowpH. Therefore, there is a need for new components that can reduce the erosive potential of a sportsdrink. Hydroxyapatites (HA) are the major components of dental enamel and bone mineral asbiological apatites. In addition, HA contains a significant amount of calcium and phosphate, whichcan promote remineralization. Hence, some remineralization of the enamel surface can be expected ifnano-sized hydroxyapatite (nano-HA) is added to a sports drink. The aim of this study was to evaluatethe remineralization effects of sports drinks containing nano-HA in vitro. The crowns of extractedhuman molars were embedded in acrylic resin and then ground flat and polished. A commerciallyavailable sports drink (Powerade, Coca-Cola, South Korea) was purchased from a local supermarket.Nano-HA was added at a concentration of 0.05%, 0.25%, and 0.5%. Deionized water (DW) was usedas the negative control. The pH of each solution was measured by a pH-meter at room temperature.The enamel specimens were immersed in each solution for 15 and 30 minutes at 37℃. In order toevaluate remineralization effect, the VHN of the enamel surface was measured at every step bymicrohardness test (JTTOSHI INC, Japan). CLSM and SEM were utilized to identify the change ofenamel surface. The pH of test solutions and VHN of enamel surface increased in proportion to thenano-HA concentrations (P〈0.05). The nano-HA could reduce the erosive potential of a sports drinkin a concentration dependent manner. These effects were confirmed by the CLSM and SEM images,which showed the remineralization effect of nano-HA. However, more study will be needed toexamine the optimal concentration and remineralization mechanism of the nano-HA in sports drinks.In conclusion, the addition of nano-HA to a sports drink can promote enamel remineralization
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.275.pdf
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