Studies on Dental Enamel

A special issue of Dentistry Journal (ISSN 2304-6767).

Deadline for manuscript submissions: 10 October 2024 | Viewed by 3551

Special Issue Editor


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Guest Editor
NOVA School of Science and Technology, NOVA University Lisbon, 2829-516 Caparica, Portugal
Interests: spectroscopic applications for biomedical studies

Special Issue Information

Dear Colleagues,

Dental enamel is one of the most important tissues in the human body. Although highly mineralized, it is susceptible to degradation, making it the scientific community’s role to obtain a full understanding of how this tissue behaves when it encounters external and internal agents.

The purpose of this Special Issue is to gather multidisciplinary contributions on novel studies pertaining to the characterization and assessment of dental enamel in both in vivo and in vitro studies. Literature reviews, new clinical application techniques and clinical cases pertaining to diagnosis, tissue evaluation and preventive treatments are also welcome.

 This Special Issue provides a great opportunity for scholars to exchange and discuss their research.

Dr. Sofia Pessanha
Guest Editor

Manuscript Submission Information

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Keywords

  • enamel
  • hydroxyapatite
  • lesions
  • de/re-mineralization
  • diagnostic
  • preventive dentistry

Published Papers (2 papers)

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Research

11 pages, 1161 KiB  
Article
Enamel Remineralisation with a Novel Sodium Fluoride-Infused Bristle Toothbrush
by Xiaotian Liu, Chun Lok Bryan Lau, Hao Ding, Jukka Pekka Matinlinna and James K. H. Tsoi
Dent. J. 2024, 12(5), 142; https://doi.org/10.3390/dj12050142 - 15 May 2024
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Abstract
This study aims to investigate whether toothbrushes with fluoride-infused bristles have any (re)mineralisation effects on bovine enamel. Bovine incisors (N = 160) were extracted, and the buccal side of the crown was cut into dimensions of ~5 mm × 5 mm with a [...] Read more.
This study aims to investigate whether toothbrushes with fluoride-infused bristles have any (re)mineralisation effects on bovine enamel. Bovine incisors (N = 160) were extracted, and the buccal side of the crown was cut into dimensions of ~5 mm × 5 mm with a low-speed saw. These specimens were randomly allocated into four groups: half (80 teeth) were stored in demineralising solution (DM), and the other half were stored in deionised water (DW) for 96 h. Then, they were brushed with a force of 2.0 ± 0.1 N for five min with a manual toothbrush with either fluoride-infused (TF) or regular (TR) bristles. Microhardness (Vickers), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM) were used to investigate the surfaces of the bovine enamel specimens before and after brushing. Two-way ANOVA was used to analyse the hardness data, and the pairwise comparison method was used to analyse the Ca/P ratio, for each group at α = 0.05. The results show that brushing with either of these toothbrushes increased the Vickers microhardness on DM and DW enamel (p < 0.001), whereas hydroxyapatite was revealed in all groups by XRD. The DM samples showed a significant increase (p < 0.05) in the Ca/P ratios after brushing with TR and TF. Conversely, under DW conditions, these ratios decreased significantly after brushing. In terms of the F atomic%, TF increased significantly. SEM revealed mineral deposition in the DM groups after toothbrushing. To conclude, toothbrushing effectively induces the microhardness of sound and demineralised enamel, while fluoride-infused bristles might be able to retain fluoride on the enamel surface. Full article
(This article belongs to the Special Issue Studies on Dental Enamel)
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9 pages, 2006 KiB  
Article
Evaluation of the Efficacy of CPP-ACP Remineralizing Mousse in MIH White and Yellow Opacities—In Vitro Vickers Microhardness Analysis
by Inês Cardoso-Martins, Sofia Arantes-Oliveira, Ana Coelho, Sofia Pessanha and Paula F. Marques
Dent. J. 2022, 10(10), 186; https://doi.org/10.3390/dj10100186 - 2 Oct 2022
Cited by 3 | Viewed by 2676
Abstract
Remineralization of tooth enamel can be partially achieved by the application of a casein phosphopeptides and amorphous phosphate (CPP-ACP) complex. However, evidence to support its effectiveness in Molar-incisor-hypomineralization (MIH)-affected teeth is scarce. The study’s aim is to evaluate the efficacy of CPP-ACP mousse [...] Read more.
Remineralization of tooth enamel can be partially achieved by the application of a casein phosphopeptides and amorphous phosphate (CPP-ACP) complex. However, evidence to support its effectiveness in Molar-incisor-hypomineralization (MIH)-affected teeth is scarce. The study’s aim is to evaluate the efficacy of CPP-ACP mousse in remineralizing MIH-affected enamel using a Vickers microhardness test. Two groups of enamel opacities of hypomineralized permanent teeth, white (group A) and yellow (group B) lesions (n = 14), went through a 28-day treatment protocol with GC Tooth Mousse. Before and after treatment, microhardness was measured in three different areas of each tooth (hypomineralized, transition, and outside the hypomineralized area). Data were analyzed using parametric and non-parametric tests with a significance of p < 0.05. The mean microhardness values increased in the hypomineralized and transition areas in both groups after the treatment protocol (in group A, 105.38 ± 11.70 to 158.26 ± 37.34; 123.04 ± 22.84 to 156.33 ± 35.70; in group B, 108.63 ± 14.66 to 143.06 ± 22.81; 132.55 ± 20.66 to 146.00 ± 12.88) and the differences pre/post-treatment were statistically significant within each group (p < 0.001 for both groups). Between groups, there was a statistically significant difference in the same areas (hypomineralized: p = 0.003; transition: p = 0.008) with a higher improvement in enamel hardness in group A. Topical application of CPP-ACP showed an increase in the physical strength of the hypomineralized and transition areas of MIH-affected enamel, likely due to an increase in mineral content. Full article
(This article belongs to the Special Issue Studies on Dental Enamel)
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