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Fathy SM, Abdelhafez A, Darwesh FA, Elkhooly TA. Evaluation of incipient enamel-carious-like lesion treated with hydroxyapatite-chitosan nanocomposite hydrogel. J World Fed Orthod 2024:S2212-4438(24)00030-4. [PMID: 38762443 DOI: 10.1016/j.ejwf.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND Non-invasive restoration of tooth enamel is a topic of high relevance in dental material science. Multiple approaches have been proposed to reach optimum reconstruction results. The current study was performed to evaluate the cross-sectional microhardness besides mineral quality and content in artificially induced carious enamel after treatment with hydroxyapatite-chitosan (HAp-CS) nanocomposite gel. METHODS Artificially carious lesions were induced by immersion of teeth in acidic carboxymethyl cellulose gel (pH 4.95-5) for 24- and 72-hours periods. Two different compositions of HAp-CS nanocomposite hydrogel were prepared with two different ratios 50/50 (%) and 70/30 (%), respectively. Additionally, sodium fluoride gel (1000 ppm concentration) was prepared and used as reference. Gels were applied to carious lesions twice/day for 3 min/each. After 45 days of application, surface morphology, energy dispersive x-ray spectroscopy, micro-Raman analysis in addition to cross-sectional microhardness were evaluated. Statistical analysis was performed using two-way ANOVA and Tukey's post hoc statistical tests. RESULTS Surface morphological evaluation of treated surfaces showed obliteration of surface irregularities. Groups demineralized for 24 hours and treated with 70/30 (HAp-CS) showed highest significant cross-sectional-microhardness (P ≤ 0.05). Evaluated subsurface cross-sectional microhardness showed better mineral quality for groups demineralized for 24 hours and treated with HAp-CS nanocomposite gels. CONCLUSIONS Nanocomposite gel with 70/30 (HAp-CS) could efficiently improve cross-sectional microhardness and both minerals composition and quality for lesions demineralized for 24 hours. More severely induced lesions, as demineralized for 72 hours, need more powerful agent compositions and/or prolonged application protocols for improvement.
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Affiliation(s)
- Salma M Fathy
- Dental Biomaterials Department, Faculty of Oral and Dental Medicine, Zagazig University, Zagazig, Egypt; Dental Biomaterials Department, Faculty of Dentistry, Badr University in Cairo, Cairo, Egypt.
| | - Alsayed Abdelhafez
- Dental Biomaterials Department, Faculty of Oral and Dental Medicine, Zagazig University, Zagazig, Egypt
| | - Fawzy A Darwesh
- Oral Biology Department, Faculty of Oral and Dental Medicine, Zagazig University, Zagazig, Egypt
| | - Tarek A Elkhooly
- Refractories, Ceramics, and Building Materials Department, National Research Centre, Dokki, Cairo, Egypt; Nanomedicine Research Unit, Faculty of Medicine, Delta University for Science and Technology, Gamasa, Egypt
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Liu H, Jiang H, Liu X, Wang X. Physicochemical understanding of biomineralization by molecular vibrational spectroscopy: From mechanism to nature. EXPLORATION (BEIJING, CHINA) 2023; 3:20230033. [PMID: 38264681 PMCID: PMC10742219 DOI: 10.1002/exp.20230033] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/25/2023] [Indexed: 01/25/2024]
Abstract
The process and mechanism of biomineralization and relevant physicochemical properties of mineral crystals are remarkably sophisticated multidisciplinary fields that include biology, chemistry, physics, and materials science. The components of the organic matter, structural construction of minerals, and related mechanical interaction, etc., could help to reveal the unique nature of the special mineralization process. Herein, the paper provides an overview of the biomineralization process from the perspective of molecular vibrational spectroscopy, including the physicochemical properties of biomineralized tissues, from physiological to applied mineralization. These physicochemical characteristics closely to the hierarchical mineralization process include biological crystal defects, chemical bonding, atomic doping, structural changes, and content changes in organic matter, along with the interface between biocrystals and organic matter as well as the specific mechanical effects for hardness and toughness. Based on those observations, the special physiological properties of mineralization for enamel and bone, as well as the possible mechanism of pathological mineralization and calcification such as atherosclerosis, tumor micro mineralization, and urolithiasis are also reviewed and discussed. Indeed, the clearly defined physicochemical properties of mineral crystals could pave the way for studies on the mechanisms and applications.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Hui Jiang
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Xiaohui Liu
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
| | - Xuemei Wang
- State Key Laboratory of Digital Medical EngineeringSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjingJiangsuChina
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3
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Sánchez-Tito M, Castañeda-Vía JA, Tay LY. Raman microscopy evaluation of the preventive effect of a modified orthodontic adhesive with silver nanoparticles on the formation of white spot lesions. J Clin Exp Dent 2023; 15:e706-e713. [PMID: 37799749 PMCID: PMC10550073 DOI: 10.4317/jced.60531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/29/2023] [Indexed: 10/07/2023] Open
Abstract
Background Silver nanoparticles (AgNPs) are an effective antibacterial agent, and their inclusion in orthodontic adhesives has been proposed to prevent white spot lesions (WSLs). The objective of this study was to evaluate by Raman microscopy the preventive effect of an orthodontic adhesive modified with AgNPs on the formation of WSLs. Material and Methods AgNPs were added in four concentrations (0.05%, 0.1%, 0.5%, and 1%) to an orthodontic adhesive. Metal brackets were bonded with the experimental adhesives, and the specimens were subjected to a microbial model for caries induction. The preventive effect on the formation of WSLs was evaluated by Raman microscopy, considering the intensity peak of the phosphate ion at 960 cm-1. The acquisition mode was linear scanning in the most representative lesion area, with a length of 136µm. Intensity values expressed the relative amount of phosphate ions remaining in the lesion. Microphotographs were analyzed in the Image J program to assess the depth of the lesions. Results Significant differences were observed between all groups (P <0.05). The addition of 1% AgNPs effectively maintained the relative amount of phosphate ions close to sound enamel values. Furthermore, as the concentration of AgNPs increased, the depth of the lesions decreased. Conclusions AgNPs were effective in decreasing the formation of WSLs. At a higher concentration of AgNPs, a more significant preventive effect on the formation of WSLs results in a relative amount of phosphate ion close to sound enamel values. Key words:White spot lesions, antibacterial, orthodontics, Raman microscopy, adhesive, Silver-nanoparticles.
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Affiliation(s)
- Marco Sánchez-Tito
- Faculty of Health Sciences, Universidad Privada de Tacna, Tacna, Peru
- PhD Program in Stomatology, Universidad Peruana Cayetano Heredia, Lima, Peru
| | | | - Lidia-Yileng Tay
- Faculty of Stomatology, Universidad Peruana Cayetano Heredia, Lima, Peru
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Pezzotti G, Ofuji S, Imamura H, Adachi T, Yamamoto T, Kanamura N, Ohgitani E, Marin E, Zhu W, Mazda O, Togo A, Kimura S, Iwata T, Shiba H, Ouhara K, Aoki T, Kawai T. In Situ Raman Analysis of Biofilm Exopolysaccharides Formed in Streptococcus mutans and Streptococcus sanguinis Commensal Cultures. Int J Mol Sci 2023; 24:ijms24076694. [PMID: 37047667 PMCID: PMC10095091 DOI: 10.3390/ijms24076694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
This study probed in vitro the mechanisms of competition/coexistence between Streptococcus sanguinis (known for being correlated with health in the oral cavity) and Streptococcus mutans (responsible for aciduric oral environment and formation of caries) by means of quantitative Raman spectroscopy and imaging. In situ Raman assessments of live bacterial culture/coculture focusing on biofilm exopolysaccharides supported the hypothesis that both species engaged in antagonistic interactions. Experiments of simultaneous colonization always resulted in coexistence, but they also revealed fundamental alterations of the biofilm with respect to their water-insoluble glucan structure. Raman spectra (collected at fixed time but different bacterial ratios) showed clear changes in chemical bonds in glucans, which pointed to an action by Streptococcus sanguinis to discontinue the impermeability of the biofilm constructed by Streptococcus mutans. The concurrent effects of glycosidic bond cleavage in water-insoluble α - 1,3-glucan and oxidation at various sites in glucans' molecular chains supported the hypothesis that secretion of oxygen radicals was the main "chemical weapon" used by Streptococcus sanguinis in coculture.
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Affiliation(s)
- Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
| | - Satomi Ofuji
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Hayata Imamura
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tetsuya Adachi
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Eriko Ohgitani
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Osam Mazda
- Department of Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, 465 Kajii-cho, Kyoto 602-8566, Japan
| | - Azusa Togo
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Satoshi Kimura
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Tadahisa Iwata
- Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Hideki Shiba
- Department of Biological Endodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Takashi Aoki
- Faculty of Fiber Science and Engineering, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan
| | - Toshihisa Kawai
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3301 College Ave, Fort Lauderdale, FL 33314, USA
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Wang C, Zhang R, Wei X, Wang L, Wu P, Yao Q. Deep learning and sub-band fluorescence imaging-based method for caries and calculus diagnosis embeddable on different smartphones. BIOMEDICAL OPTICS EXPRESS 2023; 14:866-882. [PMID: 36874478 PMCID: PMC9979668 DOI: 10.1364/boe.479818] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/28/2022] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
Popularizing community and home early caries screening is essential for caries prevention and treatment. However, a high-precision, low-cost, and portable automated screening tool is currently lacking. This study constructed an automated diagnosis model for dental caries and calculus using fluorescence sub-band imaging combined with deep learning. The proposed method is divided into two stages: the first stage collects imaging information of dental caries in different fluorescence spectral bands and obtains six-channel fluorescence images. The second stage employs a 2-D-3-D hybrid convolutional neural network combined with the attention mechanism for classification and diagnosis. The experiments demonstrate that the method has competitive performance compared to existing methods. In addition, the feasibility of transferring this approach to different smartphones is discussed. This highly accurate, low-cost, portable method has potential applications in community and at-home caries detection.
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Affiliation(s)
- Cheng Wang
- Department of Optical Science and Engineering, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Rongjun Zhang
- Department of Optical Science and Engineering, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Xiaoling Wei
- Department of Endodontics, Shanghai Stomatological Hospital, Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai 200001, China
| | - Le Wang
- Department of Optical Science and Engineering, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Peiyu Wu
- Department of Optical Science and Engineering, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Qi Yao
- Department of Optical Science and Engineering, Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
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Seredin P, Goloshchapov D, Buylov N, Kashkarov V, Emelyanova A, Eremeev K, Ippolitov Y. Compositional Analysis of the Dental Biomimetic Hybrid Nanomaterials Based on Bioinspired Nonstoichiometric Hydroxyapatite with Small Deviations in the Carbonate Incorporation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4453. [PMID: 36558306 PMCID: PMC9783965 DOI: 10.3390/nano12244453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
In our paper, we discuss the results of a comprehensive structural-spectroscopic and microscopic analysis of non-stoichiometric nanocrystalline hydroxyapatite (CHAp) with low carbonate anion content and biomimetic hybrid nanomaterials produced on its basis. It was shown that hydroxyapatite nanocrystals synthesized by chemical precipitation and biogenic calcium source mimic the properties of biogenic apatite and also have a morphological organization of "core-shell" type. The "core" of the CHAp nanocrystal is characterized by an overabundance of calcium Ca/P~1.9. Thus "a shell" with thickness of ~3-5 nm is formed from intermediate apatite-like phases where the most probable are octocalcium phosphate, dicalcium phosphate dihydrate and tricalcium phosphate. The multimode model of the Raman profile of samples CHAp and biomimetic composites for spectral region 900-1100 cm-1 proposed in our work has allowed to allocate precise contribution of B-type carbonate substitution, taking into account the presence on a surface of "core" HAp nanocrystal of various third-party intermediate apatite-like phases. The calibration function constructed on the basis of the described model makes it possible to reliably determine small concentrations of carbonate in the structure of hydroxyapatite with the application of Raman express method of diagnostics. The results of our work can inspire researchers to study the processes of induced biomineralization in mineralized tissues of the human body, using non-destructive methods of control with simultaneous analysis of chemical bonding, as well as determining the role of impurity atoms in the functions exhibited by biotissue.
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Affiliation(s)
- Pavel Seredin
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
- Scientific and Educational Center, Nanomaterials and Nanotechnologies, Ural Federal University, Lenin Ave 51, 620002 Yekaterinburg, Russia
| | - Dmitry Goloshchapov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Nikita Buylov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Vladimir Kashkarov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Anna Emelyanova
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Konstantin Eremeev
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Yuri Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, Studentcheskaya Ul. 11, 394006 Voronezh, Russia
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Machine learning-based automatic identification and diagnosis of dental caries and calculus using hyperspectral fluorescence imaging. Photodiagnosis Photodyn Ther 2022; 41:103217. [PMID: 36462702 DOI: 10.1016/j.pdpdt.2022.103217] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/07/2022] [Accepted: 11/29/2022] [Indexed: 12/05/2022]
Abstract
PURPOSE Precise diagnosis and identification of early dental caries facilitates timely intervention and reverses the progression of the disease. Developing an objective, accurate and rapid caries and calculus automatic identification method advances clinical application and facilitates the promotion and screening of oral health in the community and family. METHODS In this study, based on 122 dental surfaces labeled by professional dentists, hyperspectral fluorescence imaging combined with machine learning algorithms was employed to construct a model for simultaneously diagnosing dental caries and calculus. Model trained by fusion features based on spectra, textures, and colors with the integrated learning algorithm has better performance and stronger generalization capabilities. RESULTS The experimental results showed that the diagnostic model's accuracy, sensitivity, and specificity for identifying four different caries stages and calculus were 98.6%, 98.4%, and 99.6%, respectively. CONCLUSIONS The proposed method can evaluate the whole tooth surface at the pixel level and provides discrimination enhancement and a quantitative parameter, which is expected to be a new approach for early caries diagnosis.
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Hamdi K, Hamama HH, Motawea A, Fawzy A, Mahmoud SH. Remineralization of early enamel lesions with a novel prepared tricalcium silicate paste. Sci Rep 2022; 12:9926. [PMID: 35705597 PMCID: PMC9200717 DOI: 10.1038/s41598-022-13608-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/17/2022] [Indexed: 11/29/2022] Open
Abstract
To evaluate the remineralization potential of prepared tricalcium silicate (TCS) paste compared to silver diamine fluoride-potassium iodide (SDF-KI) and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) on artificial enamel lesions. Thirty permanent sound molars were collected for the study. After cleaning, root cutting, and applying acid-resistant nail varnish, leaving a 4 × 4 mm buccal window, the teeth were subjected to demineralization process. The teeth were divided into three treatment groups (n = 10). In each group, the teeth were sectioned buccolingually to obtain two halves (30 self-control and 30 experimental halves). The self-control halves were subjected to cross-sectional microhardness (CSMH), energy-dispersive X-ray spectroscopy at 50, 100, and 150 µm from the external enamel surface, and micromorphological analysis at the superficial enamel surface. The experimental halves were subjected to the same tests after 30 days of remineralization. Three-way analysis of variance (ANOVA) outcomes showed no significant difference in CSMH after treatment among the three different groups at the different levels (p > 0.05). Meanwhile, three-way ANOVA outcomes showed a significant difference in calcium/ phosphate ratio after treatment among the three different groups at the different levels. (p < 0.05). The tricalcium silicate paste used in this study showed potential remineralization in subsurface enamel lesions.
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Affiliation(s)
- Kareem Hamdi
- Operative Department, Faculty of Dentistry, Zagazig University, Zagazig, Egypt
| | - Hamdi H Hamama
- Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Algomhoria St, Mansoura City, 35516, Egypt.
| | - Amira Motawea
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Amr Fawzy
- UWA Dental School, University of Western Australia, Perth, Australia
| | - Salah Hasab Mahmoud
- Operative Dentistry Department, Faculty of Dentistry, Mansoura University, Algomhoria St, Mansoura City, 35516, Egypt
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Seredin P, Goloshchapov D, Kashkarov V, Emelyanova A, Buylov N, Ippolitov Y, Prutskij T. Development of a Visualisation Approach for Analysing Incipient and Clinically Unrecorded Enamel Fissure Caries Using Laser-Induced Contrast Imaging, MicroRaman Spectroscopy and Biomimetic Composites: A Pilot Study. J Imaging 2022; 8:jimaging8050137. [PMID: 35621901 PMCID: PMC9142888 DOI: 10.3390/jimaging8050137] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 02/06/2023] Open
Abstract
This pilot study presents a practical approach to detecting and visualising the initial forms of caries that are not clinically registered. The use of a laser-induced contrast visualisation (LICV) technique was shown to provide detection of the originating caries based on the separation of emissions from sound tissue, areas with destroyed tissue and regions of bacterial invasion. Adding microRaman spectroscopy to the measuring system enables reliable detection of the transformation of the organic–mineral component in the dental tissue and the spread of bacterial microflora in the affected region. Further laboratory and clinical studies of the comprehensive use of LICV and microRaman spectroscopy enable data extension on the application of this approach for accurate determination of the boundaries in the changed dental tissue as a result of initial caries. The obtained data has the potential to develop an effective preventive medical diagnostic approach and as a result, further personalised medical treatment can be specified.
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Affiliation(s)
- Pavel Seredin
- Solid State Physics and Nanostructures Department, Voronezh State University, University Sq.1, 394018 Voronezh, Russia; (D.G.); (V.K.); (A.E.); (N.B.)
- Scientific and Educational Center, Nanomaterials and Nanotechnologies, Ural Federal University, Mir Av., 620002 Yekaterinburg, Russia
- Correspondence:
| | - Dmitry Goloshchapov
- Solid State Physics and Nanostructures Department, Voronezh State University, University Sq.1, 394018 Voronezh, Russia; (D.G.); (V.K.); (A.E.); (N.B.)
| | - Vladimir Kashkarov
- Solid State Physics and Nanostructures Department, Voronezh State University, University Sq.1, 394018 Voronezh, Russia; (D.G.); (V.K.); (A.E.); (N.B.)
| | - Anna Emelyanova
- Solid State Physics and Nanostructures Department, Voronezh State University, University Sq.1, 394018 Voronezh, Russia; (D.G.); (V.K.); (A.E.); (N.B.)
| | - Nikita Buylov
- Solid State Physics and Nanostructures Department, Voronezh State University, University Sq.1, 394018 Voronezh, Russia; (D.G.); (V.K.); (A.E.); (N.B.)
| | - Yuri Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, Studentcheskaya St. 11, 394006 Voronezh, Russia;
| | - Tatiana Prutskij
- Sciences Institute, Autonomous University of Puebla (BUAP), Puebla 72570, Mexico;
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Komasa S, Okazaki J. Special Issue: Advances in Dental Bio-Nanomaterials. MATERIALS 2022; 15:ma15062098. [PMID: 35329550 PMCID: PMC8954889 DOI: 10.3390/ma15062098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 02/23/2022] [Accepted: 03/08/2022] [Indexed: 02/01/2023]
Abstract
Recent advances in dental materials involving the development of various biomaterials have been reported. Accordingly, clinicians must incorporate the new dental materials in their practice to respond to the increasing needs of patients. Nanotechnology is defined as a science that deals with nanoscale materials. The use of nanomaterials is gaining popularity in the dental industry for processing and manipulating nanoscale substances in modern dentistry. In this special issue, we invited the submission of several research papers on the development of dental materials. In this general discussion, we briefly explain the relevant research reports with an aim that developments in this field will contribute toward the development of dental care in the future.
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Fluorescence spectrometry based chromaticity mapping, characterization, and quantitative assessment of dental caries. Photodiagnosis Photodyn Ther 2022; 37:102711. [PMID: 34986426 DOI: 10.1016/j.pdpdt.2021.102711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Dental caries detection, especially the accurate detection of early caries, facilitates prompt interventions. It is reasonably common to use fluorescence imaging for classification and evaluation of caries, but lacks a quantitative, precise and easy-to-use characterization for practical applications. In this study a quantitative approach for caries stage detection by correlating caries spectral and chromatic features was examined. METHODS A 405 nm LED light source was used as the excitation source. A hyperspectral imaging camera is employed to collect 336 spectral data of different caries stages. Four critical intervals for different stages of caries were extracted by fluorescence spectral features. The mapping relationship between caries spectral and chromatic features was established by Fast Formula Fitting (FFF) and Neural Network Fitting (NNF) methods. RESULTS The 470-780 nm spectral power distribution was proved to be the best matching color waveband guiding the selection of filters in future instrument development. The correlation coefficients for the two fitting methods were 0.990 and 0.999, respectively. Both methods achieved caries stage prediction at the pixel level with high accuracy using color information. The visualization region in the chromaticity diagram was created. CONCLUSIONS This quantitative method enables accurate prediction of caries on the entire tooth surface and facilitates the development of portable and low-cost caries detection instruments.
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Gutiérrez-Prieto SJ, Sequeda-Castañeda LG, Penedo-Jaramillo GM, Chacín-Nieto AV, Contreras-Cáceres DR, Moreno-Abello GC, Galvis-Rincón MP, Gamboa-Jaimes FO, Luengas-Caicedo PE. In vitro mineral apposition analysis of two Colombian plant extracts on Amelogenesis imperfecta teeth. Clin Exp Dent Res 2021; 8:336-349. [PMID: 34498426 PMCID: PMC8874054 DOI: 10.1002/cre2.485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/30/2021] [Accepted: 08/08/2021] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVE To determine if native Colombian Piper marginatum Jacq. and Ilex guayusa Loes plant extracts have a remineralizing effect on teeth with Amelogenesis imperfecta in comparison with the commercial products Clinpro-3M and Recaldent™. MATERIAL AND METHODS An in vitro study was carried out with 128 human teeth slices (64 healthy and 64 with Amelogenesis imperfecta) on which an initial Raman spectroscopy was performed followed by Raman spectroscopies at 0, 24, 48, and 72 h to determine possible remineralization by observing mineral increase or decrease as a result of P. marginatum Jacq. and I. guayusa Loes extract application in comparison to control substance (Clinpro and Recaldent™) application. Obtained data were analyzed using a bivariate method with a t unidirectional test. Significant differences among groups were determined by an ANOVA with Dunnett post hoc tests. RESULTS Native I. guayusa Loes and P. marginatum Jacq. Colombian plants extracts exhibited phosphate and orthophosphate mineral apposition, where P. marginatum Jacq. presented better results. CONCLUSIONS Native Colombian I. guayusa Loes and P. marginatum Jacq plant extract might in the future be useful for dental tissue remineralization, as they induced phosphate and orthophosphate mineral apposition, main components of tooth enamel. These types of natural compounds can become an alternative to fluorine, whose ingestion is harmful to the human body.
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Affiliation(s)
- Sandra J Gutiérrez-Prieto
- Department of Dental Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Luis G Sequeda-Castañeda
- Department of Chemistry, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia.,Department of Pharmacy, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gabriela M Penedo-Jaramillo
- Department of Dental Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Andrea V Chacín-Nieto
- Department of Dental Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Daniel R Contreras-Cáceres
- Department of Dental Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Gloria C Moreno-Abello
- Department of Dental Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - María P Galvis-Rincón
- Department of Periodontal Systems, Dentistry Research Centre, School of Dentistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Fredy O Gamboa-Jaimes
- Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Pilar E Luengas-Caicedo
- Department of Pharmacy, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá, Colombia
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Jin H, Zhang M, Huang L, Hao J, Zhou L. Diagnosis of intrahepatic cholangiocarcinoma by Raman spectroscopy provides high efficiency: A protocol for systematic review and meta-analysis. Medicine (Baltimore) 2021; 100:e23900. [PMID: 33429751 PMCID: PMC7793367 DOI: 10.1097/md.0000000000023900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 11/30/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND We aim to evaluate the efficiency of Raman spectroscopy (RS) in diagnosing suspected patients with intrahepatic cholangiocarcinoma (ICC), manifested by diagnostic sensitivity, specificity, and accuracy. METHODS We will research widely the articles concerning the use of RS in ICC through authenticated database including PubMed/Medline, EMBASE, Web of Science, Ovid, Web of Knowledge, Cochrane Library, and CNKI between January 2012 and November 2020, retrieving at least 1500 spectra with strict criteria. This study will be carried out in accordance to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. We are going to summarize the test performance using random effects models. RESULTS Based on the pooled sensitivity, specificity, and diagnostic accuracy, we intend to provide the relative diagnostic efficiency in ICC through RS. CONCLUSION Through this systematic review and meta-analysis, we intend to provide the pooled sensitivity, specificity and diagnostic accuracy of RS in the diagnosis of suspected ICC. Other parameters like positive likelihood ratios (LR), negative LR, diagnostic odds ratio (DOR), and area under curve (AUC) of the summary receiver operating characteristics (SROC) curve will also be calculated and related figures will be drawn to help illustrate the efficacy of RS in the diagnosis of ICC.
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Affiliation(s)
- Hongyu Jin
- Department of Liver Surgery & Liver Transplantation Center
| | - Man Zhang
- Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Key Laboratory of Obstetric & Gynecologic and Pediatric Disease and Birth Defects of Ministry of Education
| | | | | | - Lingyun Zhou
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
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