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- W2949836185 abstract "The aim of this study was to evaluate the effect of nanohydroxyapatite (nanoHAP) and silver nanoparticles (AgNPs) on the microhardness and surface roughness of composite resin. Fifty disc-shaped composite resin specimens (10 mm in diameter and 1.5 mm in height) were prepared in 5 groups (n = 10) as follows: group 1, composite resin (negative control); group 2, hand-spatulated composite resin (positive control); group 3, composite resin and nanoHAP (2 wt%); group 4, composite resin and AgNPs (1 wt%); group 5, composite resin, nanoHAP (2 wt%), and AgNPs (1 wt%). The microhardness and surface roughness of the specimens were measured using a Vickers microhardness tester and surface profilometer. Data analysis was performed using 1-way analysis of variance and a Tukey test (P < 0.05). The incorporation of 2 wt% nanoHAP or 2 wt% nanoHAP plus 1 wt% AgNPs did not affect the microhardness of the composite resin (P > 0.05). However, the incorporation of 1 wt% AgNPs alone had a statistically significant negative effect on the microhardness (P < 0.05). A significant increase in surface roughness was found for the composite resin containing 2 wt% nanoHAP (P < 0.05). However, the incorporation of 1 wt% AgNPs or 2 wt% nanoHAP plus 1 wt% AgNPs into the composite resin did not affect surface roughness (P > 0.05). The incorporation of nanoHAP and AgNPs (group 5) into the composite resin did not have a negative effect on the surface roughness and microhardness of the composite resin. The highest surface roughness was observed in specimens in group 3 (composite resin and nanoHAP) and the lowest microhardness was observed in group 4 (composite resin and AgNPs)." @default.
- W2949836185 created "2019-06-27" @default.
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- W2949836185 date "2019-10-29" @default.
- W2949836185 modified "2023-09-23" @default.
- W2949836185 title "The effect of nanohydroxyapatite and silver nanoparticles on the microhardness and surface roughness of composite resin." @default.
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