Journal of the Japanese Association of Regenerative Dentistry
Online ISSN : 1880-0815
Print ISSN : 1348-9615
ISSN-L : 1348-9615
Original Article
Time-Dependent Changes in Artificial Demineralized Root Canal Dentin Rehardened by Applying Nano-hydroxyapatite
Nobuyuki KIKUCHIMuneki SAKIYAMAHideki MAKIMURAFumio NAGAHAMA
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JOURNAL FREE ACCESS

2013 Volume 11 Issue 1 Pages 12-18

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Abstract

The authors previously reported that when nano-hydroxyapatite (nano-HA) was applied to artificial demineralized root canal dentin inside the root canal, the nano-HA particles naturally penetrated into the root canal dentin within approximately 24 hours, and the root canal dentin rehardened to largely the same degree of hardness as undecalcified dentin. However, the kinds of changes that take place in rehardened artificial demineralized root canal dentin over time remain unclear and no published reports have addressed this issue. Therefore, we investigated the time-dependent changes that take place in artificial demineralized root canal dentin that has been rehardened by applying nano-HA. The results indicated that over time, the hardness of the rehardened artificial demineralized root canal dentin tends to increase.The fact that there was no change in the hardness of the rehardened demineralized dentin over the long term when the dentin was rehardened to the hardness of undecalcified dentin using nano-HA suggests that it may be possible to conserve demineralized root canal dentin, which must normally be removed.

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© 2013 by Japanese Association of Regenerative Dentistry
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