The role of mesoscopic modelling in understanding the response of dental enamel to mid-infrared radiation

Verde, Ana Vila; Ramos, Marta M. D.; Stoneham, A. M.

doi:10.1088/0031-9155/52/10/005

Cited by 5 publications

(2 citation statements)

References 50 publications

(52 reference statements)

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“…Enamel that is interior to the outermost area of the tooth has a microstructure consisting of geometric prism structures, known as rods, and inter-prismatic structures, known as inter-rods. At the nanoscopic level, both the rods and inter-rods are highly organized structures of hydroxyapatite crystals [7]. These crystals are hexagonal in shape with a diameter of approximately 30 nm, and they are arranged with all their c-axes parallel [8].…”

Section: Discussionmentioning

confidence: 99%

Evaluating the effects of remineralizing agents on early carious lesions

Jettanacheawchankit,

Pongpradit,

Euapokai

et al. 2024

Preprint

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Background Initial carious lesions are reversible, and fluoride-containing reagents effectively promote tooth enamel remineralization in the initial carious lesions. Numerous remineralizing agents are promoted, some containing fluoride and others containing alternatives, due to fluoride toxicity concerns. The objective of this study is to investigate the effects of three remineralizing agents; fluoride varnish (5% NaF, Duraphat®), casein phosphopeptide-amorphous calcium phosphate paste (CPP-ACP, Tooth Mousse®), and casein phosphopeptide-amorphous calcium phosphate fluoride paste (CPP-ACPF, Tooth Mousse Plus®), on the initial carious lesions. Methods Forty sound human maxillary premolar teeth were randomized into four experimental groups (n = 10): distilled water, fluoride varnish, CPP-ACP, and CPP-ACPF. All forty teeth were cut in half mesiodistally. Vicker’s microhardness test was performed on the buccal half of each tooth, and the lingual half was examined with both a spectrophotometer for color dimension and an Atomic Force Microscope to evaluate roughness. The four experimental groups of teeth were first systematically demineralized, and then remineralized using one of the four remineralizing agents. During the experiments, each tooth’s microhardness, color, and roughness were examined a total of three times: 1) Before treatment, 2) After demineralization, and 3) After remineralization. At each stage, a scanning electron microscope was used to examine surface features and enable EDX chemical composition analysis. Results Demineralization carried out in preparation for testing of the agents caused enamel hardness to decrease significantly. Enamel roughness increased, although not significantly. After remineralization, each of the three remineralizing agents had significantly increased both hardness and lightness (L*), compared to the demineralized enamel. Each agent decreased enamel roughness, but again the roughness change was not significant. Comparing the three remineralizing agents, there were no significant differences between the agents in effectiveness. Conclusion Each of the three remineralizing agents significantly increased hardness and lightness (L*) in decalcified enamel, and the three agents were equally effective in doing so.

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Section: Discussionmentioning

confidence: 99%

Evaluating the effects of remineralizing agents on early carious lesions

Jettanacheawchankit,

Pongpradit,

Euapokai

et al. 2024

Preprint

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“…Tooth and bone both show relevant and complex mesostructures, and there are significant variations from one person to another, even as regards the mineral components. Yet modelling these mesostructures in teeth will be the basis for potential laser based approaches to minimal invasive dentistry, 30 in which the differences in properties of the organic and mineral components make it crucial to optimise the laser properties.…”

Section: Meso-organisation: Organised Structuresmentioning

confidence: 99%

Invited review: Mesoscopic modelling: Materials at the appropriate scale

Stoneham¹,

Harding²

2009

Materials Science and Technology

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There are successful and standard ways to model materials for macroscopic engineering purposes. Likewise, there are many effective ways for atomic scale modelling, though only for relatively few atoms. But many materials properties of major importance depend on what happens at the mesoscale, where microstructures of ceramics or of teeth or bones, the dislocation engineering of metal alloys, and the spaghetti structures of polymers all have a major influence on performance. We discuss the main issues involved, and how such systems can be modelled effectively.

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Water flow on erbium:yttrium–aluminum–garnet laser irradiation: effects on dental tissues

et al. 2008

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Since lasers were introduced in dentistry, there has been considerable advancement in technology. Several wavelengths have been investigated as substitutes for high-speed air turbine. Owing to its high absorbability in water and hydroxyapatite, the erbium:yttrium-aluminum-garnet (Er:YAG) laser has been of great interest among dental practitioners and scientists. In spite of its great potential for hard tissue ablation, Er:YAG laser effectiveness and safety is directly related to an adequate setting of the working patterns. It is assumed that the ablation rate is influenced by certain conditions, such as water content of the target tissue, and laser parameters. It has been shown that Er:YAG irradiation with water coolant attenuates temperature rise and, hence, minimizes the risk of thermally induced pulp injury. It also increases ablation efficiency and enhances adhesion to the lased dental tissue. The aim of this review was to obtain insights into the ablation process and to discuss the effects of water flow on dental tissue ablation using Er:YAG laser.

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The role of mesoscopic modelling in understanding the response of dental enamel to mid-infrared radiation

Cited by 5 publications

References 50 publications

Evaluating the effects of remineralizing agents on early carious lesions

Evaluating the effects of remineralizing agents on early carious lesions

Invited review: Mesoscopic modelling: Materials at the appropriate scale

Water flow on erbium:yttrium–aluminum–garnet laser irradiation: effects on dental tissues

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