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A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel

This study aimed to evaluate two hydrogen peroxide (HP)-based at-home bleaching systems in order to analyze whether nano-hydroxyapatite (nHA) addition may represent a reliable and safe solution for tooth whitening without altering dental microstructure and hardness. Human third molars (N = 15) were...

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Autores principales: Monterubbianesi, Riccardo, Tosco, Vincenzo, Bellezze, Tiziano, Giuliani, Giampaolo, Özcan, Mutlu, Putignano, Angelo, Orsini, Giovanna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199990/
https://www.ncbi.nlm.nih.gov/pubmed/34199770
http://dx.doi.org/10.3390/ma14113072
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author Monterubbianesi, Riccardo
Tosco, Vincenzo
Bellezze, Tiziano
Giuliani, Giampaolo
Özcan, Mutlu
Putignano, Angelo
Orsini, Giovanna
author_facet Monterubbianesi, Riccardo
Tosco, Vincenzo
Bellezze, Tiziano
Giuliani, Giampaolo
Özcan, Mutlu
Putignano, Angelo
Orsini, Giovanna
author_sort Monterubbianesi, Riccardo
collection PubMed
description This study aimed to evaluate two hydrogen peroxide (HP)-based at-home bleaching systems in order to analyze whether nano-hydroxyapatite (nHA) addition may represent a reliable and safe solution for tooth whitening without altering dental microstructure and hardness. Human third molars (N = 15) were treated with two bleaching agents, one containing 6%HP (6HP) and the other 6% HP nHA-enriched (6HP-nHA) with average particle diameter ranging from 5–20 nm. Their effects on enamel were assessed using a spectrophotometer, Vickers microhardness (VMH) test and Scanning Electron Microscopy (SEM), comparing the treated groups with the non-treated control group (CTR). Color analysis revealed improvement in whiteness in both groups compared to CTR. VMH test results showed no differences among the groups. SEM analysis highlighted no evident changes in the enamel microstructure of tested groups compared to CTR. At high magnification, in 6HP group, a slight increase in irregularities of enamel surface morphology was observed, while 6HP-nHA group displayed removal of the aprismatic layer but preservation of the intact prismatic structure. These results suggest that the 6HP-nHA agent may be recommended to provide reliable whitening treatment, without damaging the enamel micromorphology and hardness.
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spelling pubmed-81999902021-06-14 A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel Monterubbianesi, Riccardo Tosco, Vincenzo Bellezze, Tiziano Giuliani, Giampaolo Özcan, Mutlu Putignano, Angelo Orsini, Giovanna Materials (Basel) Article This study aimed to evaluate two hydrogen peroxide (HP)-based at-home bleaching systems in order to analyze whether nano-hydroxyapatite (nHA) addition may represent a reliable and safe solution for tooth whitening without altering dental microstructure and hardness. Human third molars (N = 15) were treated with two bleaching agents, one containing 6%HP (6HP) and the other 6% HP nHA-enriched (6HP-nHA) with average particle diameter ranging from 5–20 nm. Their effects on enamel were assessed using a spectrophotometer, Vickers microhardness (VMH) test and Scanning Electron Microscopy (SEM), comparing the treated groups with the non-treated control group (CTR). Color analysis revealed improvement in whiteness in both groups compared to CTR. VMH test results showed no differences among the groups. SEM analysis highlighted no evident changes in the enamel microstructure of tested groups compared to CTR. At high magnification, in 6HP group, a slight increase in irregularities of enamel surface morphology was observed, while 6HP-nHA group displayed removal of the aprismatic layer but preservation of the intact prismatic structure. These results suggest that the 6HP-nHA agent may be recommended to provide reliable whitening treatment, without damaging the enamel micromorphology and hardness. MDPI 2021-06-04 /pmc/articles/PMC8199990/ /pubmed/34199770 http://dx.doi.org/10.3390/ma14113072 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Monterubbianesi, Riccardo
Tosco, Vincenzo
Bellezze, Tiziano
Giuliani, Giampaolo
Özcan, Mutlu
Putignano, Angelo
Orsini, Giovanna
A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title_full A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title_fullStr A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title_full_unstemmed A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title_short A Comparative Evaluation of Nanohydroxyapatite-Enriched Hydrogen Peroxide Home Bleaching System on Color, Hardness and Microstructure of Dental Enamel
title_sort comparative evaluation of nanohydroxyapatite-enriched hydrogen peroxide home bleaching system on color, hardness and microstructure of dental enamel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8199990/
https://www.ncbi.nlm.nih.gov/pubmed/34199770
http://dx.doi.org/10.3390/ma14113072
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