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Investigation of the effect of indirect pulp capping materials on dentin mineral density
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Keywords

Calcium hydroxide
Calcium compounds
Silicates
Spectrometry, X-ray emission
Glass ionomer cement
X-ray microtomography

How to Cite

1.
Misilli T, Uslu G, Orhan K, Bayrakdar İbrahim Şevki, Erdönmez D, Özyürek T. Investigation of the effect of indirect pulp capping materials on dentin mineral density. Braz. J. Oral Sci. [Internet]. 2023 Jul. 10 [cited 2024 Jun. 27];22(00):e231303. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8671303

Funding data

Abstract

Aim: To evaluate the potential of inducing mineral density changes of indirect pulp capping materials applied to demineralized dentin. Methods: A total of 50 cavities were prepared, 5 in each tooth, in extracted ten molars without caries, impacted or semi-embedded. The cavities were scanned by microcomputed tomography (μ-CT) after creating artificial caries by microcosm method (pre-treatment). Each cavity was subjected to one of 5 different experimental conditions: control (dental wax), conventional glass ionomer cement (Fuji IX GP Extra), resin-modified calcium silicate (TheraCal LC), resin-modified calcium hydroxide (Ultra-Blend Plus), MTA (MM-MTA) and the samples were kept under intrapulpal pressure using simulated body fluid for 45 days. Then, the second μ-CT scan was performed (post-treatment), and the change in dentin mineral density was calculated. Afterward, elemental mapping was performed on the dentinal surfaces adjacent to the pulp capping agents of 5 randomly selected samples using energy dispersive X-ray spectroscopy (EDS) apparatus attached to a scanning electron microscope (SEM). The Ca/P ratio by weight was calculated. Friedman test and Wilcoxon Signed Ranks test were used to analyze the data. Results: There was a significant increase in mineral density values of demineralized dentin after treatment for all material groups (p<0.05). Resin-modified calcium silicate had similar efficacy to MTA and conventional glass ionomer cement, but was superior to resin-modified calcium hydroxide in increasing the mineral density values of demineralized dentin. Conclusions: Demineralized dentin tissue that is still repairable can be effectively preserved using materials with remineralization capability.

https://doi.org/10.20396/bjos.v22i00.8671303
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Copyright (c) 2022 Tuğba Misilli, Gülşah Uslu, Kaan Orhan; İbrahim Şevki Bayrakdar; Demet Erdönmez, Taha Özyürek

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