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The effects of fractional CO2 laser, Nano-hydroxyapatite and MI paste on mechanical properties of bovine enamel after bleaching
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- Journal of Clinical and Experimental Dentistry
- Journal of Clinical and Experimental Dentistry. 2017. Vol. 9, no. 12
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The effects of fractional CO2 laser, Nano-hydroxyapatite and MI paste on mechanical properties of bovine enamel after bleaching
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| dc.contributor.author | Moosavi, Horieh | es |
| dc.contributor.author | Hakimi, Narjes | es |
| dc.date.accessioned | 2018-02-28T11:30:43Z | |
| dc.date.available | 2018-02-28T11:30:43Z | |
| dc.date.issued | 2017 | es |
| dc.identifier.citation | Moosavi, Horieh ; Hakimi, Narjes. The effects of fractional CO2 laser, Nano-hydroxyapatite and MI paste on mechanical properties of bovine enamel after bleaching. En: Journal of Clinical and Experimental Dentistry, 9 12 2017: 1390-1396 | es |
| dc.identifier.uri | http://hdl.handle.net/10550/65083 | |
| dc.description.abstract | This study investigated the effect of post bleaching treatments to the change of enamel elastic modulus and microhardness after dental bleaching in- vitro. Fifty bovine incisor slab were randomly assigned into five groups (n=10). The samples were bleached for three times; 20 minutes each time, by 40% hydrogen peroxide. Next it was applied fractional CO2 laser for two minutes, Nano- hydroxy apatite (N-HA) and MI-paste for 7 days and 2 minutes per day. The sound enamel and bleached teeth without post treatment remained as control groups. The elastic modulus and microhardness were measured at three times; 24 hours, 1 and 2 months. Data were statistically analyzed by two-way analysis of variance with 95% confidence level. Different methods of enamel treatment caused a significant increase in elastic modulus compared to bleached group (P<0.05). Modulus was significantly increased in 1 and 2 months (P<0/001: bleach, P= 0/015: laser, P= 0/008: NHA, P=0/010: MI paste) but there were no significantly difference between 1 and 2 months (P>0.05). There was any significance difference for hardness among treated and control groups, but hardness increased significantly by increasing storage time (P<0.05). The use of the protective tested agents can be useful in clinical practice to reduce negative changes of enamel surface after whitening procedures. | es |
| dc.title | The effects of fractional CO2 laser, Nano-hydroxyapatite and MI paste on mechanical properties of bovine enamel after bleaching | es |
| dc.type | journal article | es_ES |
| dc.subject.unesco | UNESCO::CIENCIAS MÉDICAS | es |
| dc.identifier.doi | 10.4317/jced.54044 | es |
| dc.type.hasVersion | VoR | es_ES |
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