An evaluation of the effect of non-setting calcium hydroxide on human dentine: a pilot study.

Twati, WA, Wood, DJ, Liskiewicz, TW, Willmott, NS and Duggal, MS (2009) An evaluation of the effect of non-setting calcium hydroxide on human dentine: a pilot study. European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 10 (2). pp. 104-109. ISSN 1818-6300

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Official URL: https://link.springer.com/article/10.1007/BF033216...

Abstract

AIM: To evaluate the effect of non-setting calcium hydroxide (NSCH) on the hardness and elastic modulus of dentine from extracted permanent premolar human teeth. METHODS: 30 freshly extracted single rooted human premolar teeth were decoronated and the roots then sectioned longitudinally into equal halves. In the experimental group a thin layer of NSCH was applied whilst the control group had no medicament. After 1, 3 and 6 months, nanoindentation was used to assess dentine hardness and the modulus of elasticity. Scanning Electron Microscopy (SEM) was used to visualize the depth of penetration of NSCH into the dentinal tubules. RESULTS: SEM images showed that there were no structural changes in the dentine slabs that had NSCH application after 1, 3 or even 6 months. However, penetration of NSCH into the dentine tubules was seen at both 3 and 6 months with a significant reduction in the hardness of dentine observed at 3 (p<0.02) and 6 months (p<0.01). The modulus of elasticity was significantly lower (p<0.01) at 6 months. CONCLUSION: It appears that there is a significant reduction in the hardness of dentine with increasing periods of calcium hydroxide application. Prolonged application of NSCH could have a detrimental effect on dentine, making the dentine more prone to fracture.

Item Type:	Article
Peer-reviewed:	Yes
Date Deposited:	05 Jun 2020 09:11
Publisher:	Springer
Additional Information:	This is an Author Accepted Manuscript of a paper accepted for publication in European Archives of Paediatric Dentistry published by and copyright Springer.
Divisions:	Faculties > Science and Engineering Research Centres > Advanced Materials and Surface Engineering
Subject terms:	non-setting calcium hydroxide, dentine, Humans, Calcium Hydroxide, Root Canal Filling Materials, Microscopy, Electron, Scanning, Pilot Projects, Dentin Permeability, Hardness, Time Factors, Adolescent, Child, Elastic Modulus, Adolescent, Calcium Hydroxide, Child, Dentin, Dentin Permeability, Elastic Modulus, Hardness, Humans, Microscopy, Electron, Scanning, Pilot Projects, Root Canal Filling Materials, Time Factors, 1105 Dentistry
URI:	https://mmu-uat.leaf.cosector.com/id/eprint/625930
DOI:	https://doi.org/10.1007/BF03321610
ISSN	1818-6300

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