Li-doped bioglass® 45S5 for potential treatment of prevalent oral diseases

Li-doped bioglass® 45S5 for potential treatment of prevalent oral diseases

•In vitro demineralized teeth were remineralized by bioglass (BG) and Li-doped BG.•The remineralization process by bioglasses partially recovered the microhardness of the demineralized teeth.•Bioglasses produce an alkaline environment that affects bacteria such as S. mutans.•Lithium increased the an...

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Bibliographic Details
Published in:Journal of dentistry Vol. 105; p. 103575
Main Authors: Palza Cordero, Humberto, Castro Cid, René, Diaz Dosque, Mario, Cabello Ibacache, Rodrigo, Palma Fluxá, Patricia
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-02-2021
Elsevier Limited
Subjects:
Antibacterial activity
Antibacterial materials
Antiinfectives and antibacterials
Bacteria
Biocompatibility
Bioglass
Biological activity
Caries
Ceramics
Demineralization- remineralization
Demineralizing
Dental caries
Dental enamel
Dentistry
Electron microscopy
Enamel
Glucose
Gum disease
Hardness
Humans
Ions
Nitrates
Oral diseases
Pathogens
Periodontitis
Physiology
Remineralization
Sol-gel processes
Teeth
Tooth Remineralization
Toxicity
Demineralization- remineralization
Caries
Periodontitis
Antibacterial materials
Bioglass
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Summary:•In vitro demineralized teeth were remineralized by bioglass (BG) and Li-doped BG.•The remineralization process by bioglasses partially recovered the microhardness of the demineralized teeth.•Bioglasses produce an alkaline environment that affects bacteria such as S. mutans.•Lithium increased the antibacterial activity of bioglasses against A. actinomycetemcomitans bacteria. Despite the excellent properties of both pure bioglasses (BG) and BG doped with therapeutic ions (such as Li) in hard tissue applications, there is not enough information about their role in the remineralization and bacterial-growth in oral diseases. The aim of this contribution is to evaluate the effect of both pure BG and BG doped with 5-wt% of Li (BGLi) on both the remineralization of in vitro demineralized human-teeth and the antimicrobial behavior against strains from caries and periodontitis. Bioglass® 45S5 (BG) and BGLi were synthesized by the sol-gel method. The remineralization tests were carried out using in vitro demineralized enamel teeth and evaluated by Electron Microscopy (SEM) and Vickers micro-hardness (HV). The antimicrobial behavior of the particles was evaluated against S. mutans, A. actinomycetemcomitans, and P. gingivalis, representing pathogens from caries and periodontitis. Enamel lesion was partially remineralized when both bioglasses (BG and BGLi) were applied on its surface with micro-hardness recoveries around 45 %. They further inhibited the growth of S. mutans and P. gingivalis, at 50 and 200 mg/mL, respectively. BGLi presented a higher toxicity against A. actinomycetemcomitans than BG, with inhibition concentrations of 20 mg/mL and 100 mg/mL, respectively. Bioglasses could be used in the treatment of two of the most prevalent oral diseases: caries and periodontitis, promoting the remineralization of the teeth and killing the main pathogens. The presence of Li did not affect the bioactivity of the bioglass and improved the antibacterial effect over A. actinomycetemcomitans strain.
ISSN:0300-5712
1879-176X
DOI:10.1016/j.jdent.2020.103575