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|Title:||Post-irradiation hardness of resin-modified glass ionomer cements and a polyacid-modified composite resin|
|Source:||Yap, A.U.J. (1997). Post-irradiation hardness of resin-modified glass ionomer cements and a polyacid-modified composite resin. Journal of Materials Science: Materials in Medicine 8 (7) : 413-416. ScholarBank@NUS Repository. https://doi.org/10.1023/A:1018501520931|
|Abstract:||This study examined the post-irradiation hardness of resin-modified glass ionomer cements and a polyacid-modified composite resin using a digital microhardness tester. Change in hardness of these materials over a period of 6 months was compared to that of conventional glass ionomer cements and a composite resin. With the exception of the composite resin, all materials showed a significant increase in hardness over 24 h after their initial set. Dual-cure resin-modified glass ionomer cements showed decreased hardness with increased storage time in saline at 37°C. Results suggest that the addition of resins to glass ionomer cements does not improve initial hardness and does not negate the acid-base reaction of conventional cements. Resin addition may, however, lead to increased water sorption and decreased hardness.|
|Source Title:||Journal of Materials Science: Materials in Medicine|
|Appears in Collections:||Staff Publications|
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