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Iordache SM, Iordache AM, Gatin DI, Grigorescu CEA, Ilici RR, Luculescu CR, Gatin E. Performance Assessment of Three Similar Dental Restorative Composite Materials via Raman Spectroscopy Supported by Complementary Methods Such as Hardness and Density Measurements. Polymers (Basel) 2024; 16:466. [PMID: 38399844 PMCID: PMC10893299 DOI: 10.3390/polym16040466] [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: 12/20/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
(1) Background: A widespread problem in oral health is cavities produced by cariogenic bacteria that consume fermentable carbohydrates and lower pH to 5.5-6.5, thus extracting Ca2+ and phosphate ions (PO43-) from teeth. Dental restorative materials based on polymers are used to fill the gaps in damaged teeth, but their properties are different from those of dental enamel. Therefore, a question is raised about the similarity between dental composites and natural teeth in terms of density and hardness. (2) Methods: We have used Raman spectroscopy and density and microhardness measurements to compare physical characteristics of several restorative dental composites at different polymerization intervals. (3) Results: XRVHerculite®, Optishade®, and VertiseFlow® showed the very different characteristics of the physical properties following four polymerization intervals. Of the three composites, OptiShade showed the highest polymerization rate. (4) Conclusions: Only fully polymerized composites can be used in teeth restoring, because incomplete polymerization would result in cracks, pitting, and lead finally to failure.
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Affiliation(s)
- Stefan-Marian Iordache
- Optospintronics Department, National Institute for Research and Development in Optoelectronics—INOE 2000, 077125 Magurele, Romania; (S.-M.I.); (A.-M.I.); (C.E.A.G.)
| | - Ana-Maria Iordache
- Optospintronics Department, National Institute for Research and Development in Optoelectronics—INOE 2000, 077125 Magurele, Romania; (S.-M.I.); (A.-M.I.); (C.E.A.G.)
| | - Dina Ilinca Gatin
- Faculty of Dentistry, University of Medicine and Pharmacy “Carol Davila”, 020021 Bucharest, Romania; (D.I.G.); (R.R.I.)
| | - Cristiana Eugenia Ana Grigorescu
- Optospintronics Department, National Institute for Research and Development in Optoelectronics—INOE 2000, 077125 Magurele, Romania; (S.-M.I.); (A.-M.I.); (C.E.A.G.)
| | - Roxana Romanita Ilici
- Faculty of Dentistry, University of Medicine and Pharmacy “Carol Davila”, 020021 Bucharest, Romania; (D.I.G.); (R.R.I.)
| | | | - Eduard Gatin
- Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, 020021 Bucharest, Romania
- Faculty of Physics, University of Bucharest, 077125 Magurele, Romania
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Gatin E, Iordache SM, Gatin DI, Nagy P, Iordache AM, Luculescu C. Periodontal Disease Monitoring by Raman Spectroscopy of Phosphates: New Insights into Pyrophosphate Activity. Diagnostics (Basel) 2023; 14:66. [PMID: 38201375 PMCID: PMC10802175 DOI: 10.3390/diagnostics14010066] [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: 11/06/2023] [Revised: 12/16/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
(1) Background: The intent of this survey was to investigate the quality of the alveolar bone by revealing the different phases for calcified tissues independent of the medical history of the patient in relation to periodontal disease by means of Raman spectroscopy and then to correlate the results by suggesting a possible mechanism for the medical impairment; (2) Methods: The investigation was mainly based on Raman spectroscopy that was performed in vivo during surgery for the selected group of patients. The targeted peaks for the Raman spectra were according to the reference compounds (e.g., calcium phosphates, other phosphates); (3) Results: The variation in the intensity of the spectrum correlated to the specific bone constituents' concentrations highlights the bone quality, while some compounds (such as pyrophosphate, PPi) are strongly related to the patient's medical status, and they provide information regarding a physiological process that occurred in the calcified tissues. Moreover, bone sample fluorescence is related to the collagen (Col) content, enabling a complete evaluation of bone quality, revealing the importance of collagen matrix acting as a load-bearing element for Calcium phosphate (CaP) deposition during the complex bone mineralization process; (4) Conclusions: We highlight that Raman spectroscopy can be considered a viable investigative method for in vivo and rapid bone quality valuation through oral health monitoring.
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Affiliation(s)
- Eduard Gatin
- Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, Blv. Eroii Sanitari 8, Sector 5, 050474 Bucharest, Romania
- Faculty of Physics, DMSPA Department, University of Bucharest, Atomistilor Str. 405, 077125 Magurele, Romania
| | - Stefan Marian Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, Atomistilor Str. 409, 077125 Magurele, Romania; (S.M.I.); (A.-M.I.)
| | - Dina Ilinca Gatin
- Faculty of Dentistry, University of Medicine “Carol Davila”, Calea Plevnei 17-23, Sector 5, 0110221 Bucharest, Romania;
| | - Pal Nagy
- Faculty of Dentistry, Periodontology Department, Semmelweiss University, 1085 Budapest, Hungary;
| | - Ana-Maria Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, Atomistilor Str. 409, 077125 Magurele, Romania; (S.M.I.); (A.-M.I.)
| | - Catalin Luculescu
- CETAL Department, National Institute for Laser, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania
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Gatin E, Nagy P, Iordache SM, Iordache AM, Luculescu CR, Grygorovskyy V. Preliminary Assessment of In Vivo Raman Spectroscopy Technique for Bone Quality Evaluation of Augmented Maxillary Sinus Floor. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4789. [PMID: 36981696 PMCID: PMC10049299 DOI: 10.3390/ijerph20064789] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
(1) Background: In oral surgery, bone regeneration is achieved through various types of bone grafts or bone substitutes and its success is usually analyzed by micro-computed tomography and histomorphometry. The aim of this study was to evaluate the usefulness of Raman spectroscopy as an alternative to other techniques for bone quality evaluation during a standard oral surgery procedure. (2) Methods: The preliminary evaluation of bone augmentation during maxillary sinus floor elevation oral surgery was performed by Raman spectroscopy for several (five) patients during and after the surgery and the results were compared with postoperative data from histomorphometry, EDX and SEM analysis. (3) Results: After analyzing all the results for the bone samples according to the four methods (Raman, EDX, SEM and Histology) that were used in our study, the obtained result of the investigation provided a good augmentation process for three of the patients and partly successful augmentation process for two of the patients. The primary evaluation using Raman spectroscopy (in vivo and ex vivo investigation) was confirmed by histological results, thus having a first step for validation of Raman as a new method of imaging for dentistry. (4) Conclusions: Our results show that Raman spectroscopy could provide fast and reliable insight on bone condition during augmentation of the maxillary sinus floor. We emphasize the advantages and drawbacks of the proposed techniques as its accuracy could increase by performing larger size clinical trials. Using the Raman mapping, the method can serve as an alternative to histology.
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Affiliation(s)
- Eduard Gatin
- Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, Blv. Eroii Sanitari 8, Sector 5, 050474 Bucharest, Romania
- Faculty of Physics, DMSFAPA Department, University of Bucharest, 405 Atomistilor Str., 077125 Magurele, Romania
| | - Pal Nagy
- Faculty of Dentistry, Periodontology Department, Semmelweiss University, 1085 Budapest, Hungary
| | - Stefan Marian Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
| | - Ana-Maria Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
| | - Catalin Romeo Luculescu
- CETAL Department, National Institute for Laser, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania
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Ni D, Späth M, Klämpfl F, Hohmann M. Properties and Applications of Random Lasers as Emerging Light Sources and Optical Sensors: A Review. SENSORS (BASEL, SWITZERLAND) 2022; 23:247. [PMID: 36616846 PMCID: PMC9824070 DOI: 10.3390/s23010247] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
In a random laser (RL), optical feedback arises from multiple scattering instead of conventional mirrors. RLs generate a laser-like emission, and meanwhile take advantage of a simpler and more flexible laser configuration. The applicability of RLs as light sources and optical sensors has been proved. These applications have been extended to the biological field, with tissues as natural scattering materials. Herein, the current state of the RL properties and applications was reviewed.
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Affiliation(s)
- Dongqin Ni
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Moritz Späth
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Florian Klämpfl
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Martin Hohmann
- Institute of Photonic Technologies (LPT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Konrad-Zuse-Straße 3/5, 91052 Erlangen, Germany
- Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
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Gatin E, Iordache SM, Matei E, Luculescu CR, Iordache AM, Grigorescu CEA, Ilici RR. Raman Spectroscopy as Spectral Tool for Assessing the Degree of Conversion after Curing of Two Resin-Based Materials Used in Restorative Dentistry. Diagnostics (Basel) 2022; 12:diagnostics12081993. [PMID: 36010343 PMCID: PMC9407164 DOI: 10.3390/diagnostics12081993] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: The treatment of dental cavities and restoration of tooth shape requires specialized materials with specific clinical properties, including being easy to model, light-cured, having a natural color, reduced shrinkage, a hardness similar to hydroxyapatite, and no leakage. The dimensional stability of resin composite materials is affected by polymerization shrinkage, degree of conversion (number of π carbon bonds converted into σ ones), thermal contraction and expansion, and interactions with an aqueous environment. (2) Methods: The materials used in our investigation were two composite resins with similar polymer matrices, but different filler (micro/nano filler). To evaluate the properties of samples, we employed the pycnometer technique (pycnometer from Paul Marienfeld Gmbh, Lauda-Königshofen, Germany), RAMAN spectroscopy technique (MiniRam Equipment from B&W Tek Inc., Plainsboro Township, NJ, USA; 785 nm laser source), SEM and EDX (FEI Inspect S.). (3) Results: The size of the filler plays an important role in the polymerization: for the pycnometric results, the larger particle filler (Sample 1) seems to undergo a rapid polymerization during the 45 s curing, while the nanoparticle filer (Sample 2) needs additional curing time to fully polymerize. This is related to a much larger porosity, as proved by SEM images. The lower degree of conversion, as obtained by Raman spectroscopy, in the same geometry means that the same volume is probed for both samples, but Sample 1 is more porous, which means less amount of polymer is probed for Sample 1. (4) Conclusions: For the two composites, we obtained a degree of conversion of 59% for Sample 1 and 93% for Sample 2, after 45 s of curing.
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Affiliation(s)
- Eduard Gatin
- Faculty of Medicine, University of Medicine ‘‘Carol Davila’’, Blv. Eroii Sanitari 8, Sector 5, 020021 Bucharest, Romania
- Faculty of Physics, University of Bucharest, Atomistilor 405, 077125 Magurele, Romania
| | - Stefan-Marian Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
- Correspondence: (S.-M.I.); (A.-M.I.)
| | - Elena Matei
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | | | - Ana-Maria Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
- Correspondence: (S.-M.I.); (A.-M.I.)
| | - Cristiana Eugenia Ana Grigorescu
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
| | - Roxana Romanita Ilici
- Faculty of Dental Medicine, University of Medicine “Carol Davila”, Plevnei Route No. 17-23, Sector 1, 020021 Bucharest, Romania
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Monroy GL, Fitzgerald ST, Locke A, Won J, Spillman DR, Ho A, Zaki FR, Choi H, Chaney EJ, Werkhaven JA, Mason KM, Mahadevan-Jansen A, Boppart SA. Multimodal Handheld Probe for Characterizing Otitis Media - Integrating Raman Spectroscopy and Optical Coherence Tomography. FRONTIERS IN PHOTONICS 2022; 3:929574. [PMID: 36479543 PMCID: PMC9720905 DOI: 10.3389/fphot.2022.929574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Otitis media (OM) is a common disease of the middle ear, affecting 80% of children before the age of three. The otoscope, a simple illuminated magnifier, is the standard clinical diagnostic tool to observe the middle ear. However, it has limited contrast to detect signs of infection, such as clearly identifying and characterizing middle ear fluid or biofilms that accumulate within the middle ear. Likewise, invasive sampling of every subject is not clinically indicated nor practical. Thus, collecting accurate noninvasive diagnostic factors is vital for clinicians to deliver a precise diagnosis and effective treatment regimen. To address this need, a combined benchtop Raman spectroscopy (RS) and optical coherence tomography (OCT) system was developed. Together, RS-OCT can non-invasively interrogate the structural and biochemical signatures of the middle ear under normal and infected conditions.In this paper, in vivo RS scans from pediatric clinical human subjects presenting with OM were evaluated in parallel with RS-OCT data of physiologically relevant in vitro ear models. Component-level characterization of a healthy tympanic membrane and malleus bone, as well as OM-related middle ear fluid, identified the optimal position within the ear for RS-OCT data collection. To address the design challenges in developing a system specific to clinical use, a prototype non-contact multimodal handheld probe was built and successfully tested in vitro. Design criteria have been developed to successfully address imaging constraints imposed by physiological characteristics of the ear and optical safety limits. Here, we present the pathway for translation of RS-OCT for non-invasive detection of OM.
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Affiliation(s)
- Guillermo L. Monroy
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Sean T. Fitzgerald
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
| | - Andrea Locke
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
| | - Jungeun Won
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Darold R. Spillman
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Alexander Ho
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Farzana R. Zaki
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Honggu Choi
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Eric J. Chaney
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
| | - Jay A. Werkhaven
- Dept. Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Kevin M. Mason
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute Nationwide Children’s Hospital, Columbus, OH, United States
| | - Anita Mahadevan-Jansen
- Vanderbilt Biophotonics Center, Nashville, TN, United States
- Dept. Biomedical Engineering, Vanderbilt University, Nashville, TN, United States
- Dept. Otolaryngology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Bioengineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Dept. Electrical and Computer Engineering, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Carle Illinois College of Medicine, University of Illinois Urbana-Champaign, Urbana, IL, United States
- Cancer Center at Illinois, University of Illinois Urbana-Champaign, Urbana, IL, United States
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Gatin EG, Nagy P, Iordache SM, Iordache AM, Luculescu CR. Raman Spectroscopy: In Vivo Application for Bone Evaluation in Oral Reconstructive (Regenerative) Surgery. Diagnostics (Basel) 2022; 12:diagnostics12030723. [PMID: 35328277 PMCID: PMC8947687 DOI: 10.3390/diagnostics12030723] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/06/2022] [Accepted: 03/10/2022] [Indexed: 12/28/2022] Open
Abstract
The aim of this study was to evaluate the quality of the bone, revealing the different phases for calcified tissues independent of the medical history of the patient in relation to periodontitis by means of in vivo Raman spectroscopy. Raman spectroscopy measurements were performed in vivo during surgery and then ex vivo for the harvested bone samples for the whole group of patients (ten patients). The specific peaks for the Raman spectrum were traced for reference compounds (e.g., calcium phosphates) and bone samples. The variation in the intensity of the spectrum in relation to the specific bone constituents’ concentrations reflects the bone quality and can be strongly related with patient medical status (before dental surgery and after a healing period). Moreover, bone sample fluorescence is related to collagen content, enabling a complete evaluation of bone quality including a “quasi-quantification” of the healing process similar to the bone augmentation procedure. A complete evaluation of the processed spectra offers quantitative/qualitative information on the condition of the bone tissue. We conclude that Raman spectroscopy can be considered a viable investigation method for an in vivo and quick bone quality assessment during oral and periodontal surgery.
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Affiliation(s)
- Eduard Gheorghe Gatin
- Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, 050474 Bucharest, Romania
- Faculty of Physics, University of Bucharest, 077125 Magurele, Romania
- Correspondence: (E.G.G.); (S.-M.I.); (A.-M.I.)
| | - Pal Nagy
- Faculty of Dentistry, Semmelweis University, 1085 Budapest, Hungary;
| | - Stefan-Marian Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
- Correspondence: (E.G.G.); (S.-M.I.); (A.-M.I.)
| | - Ana-Maria Iordache
- Optospintronics Department, National Institute for Research and Development for Optoelectronics—INOE 2000, 077125 Magurele, Romania
- Correspondence: (E.G.G.); (S.-M.I.); (A.-M.I.)
| | - Catalin Romeo Luculescu
- National Institute for Laser, Plasma and Radiation Physics, CETAL, 077125 Magurele, Romania;
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Zhang Y, Ren L, Wang Q, Wen Z, Liu C, Ding Y. Raman Spectroscopy: A Potential Diagnostic Tool for Oral Diseases. Front Cell Infect Microbiol 2022; 12:775236. [PMID: 35186787 PMCID: PMC8855094 DOI: 10.3389/fcimb.2022.775236] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 01/17/2022] [Indexed: 12/24/2022] Open
Abstract
Oral diseases impose a major health burden worldwide and have a profound effect on general health. Dental caries, periodontal diseases, and oral cancers are the most common oral health conditions. Their occurrence and development are related to oral microbes, and effective measures for their prevention and the promotion of oral health are urgently needed. Raman spectroscopy detects molecular vibration information by collecting inelastic scattering light, allowing a “fingerprint” of a sample to be acquired. It provides the advantages of rapid, sensitive, accurate, and minimally invasive detection as well as minimal interference from water in the “fingerprint region.” Owing to these characteristics, Raman spectroscopy has been used in medical detection in various fields to assist diagnosis and evaluate prognosis, such as detecting and differentiating between bacteria or between neoplastic and normal brain tissues. Many oral diseases are related to oral microbial dysbiosis, and their lesions differ from normal tissues in essential components. The colonization of keystone pathogens, such as Porphyromonas gingivalis, resulting in microbial dysbiosis in subgingival plaque, is the main cause of periodontitis. Moreover, the components in gingival crevicular fluid, such as infiltrating inflammatory cells and tissue degradation products, are markedly different between individuals with and without periodontitis. Regarding dental caries, the compositions of decayed teeth are transformed, accompanied by an increase in acid-producing bacteria. In oral cancers, the compositions and structures of lesions and normal tissues are different. Thus, the changes in bacteria and the components of saliva and tissue can be used in examinations as special markers for these oral diseases, and Raman spectroscopy has been acknowledged as a promising measure for detecting these markers. This review summarizes and discusses key research and remaining problems in this area. Based on this, suggestions for further study are proposed.
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Affiliation(s)
- Yuwei Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liang Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qi Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhining Wen
- College of Chemistry, Sichuan University, Chengdu, China
| | - Chengcheng Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Chengcheng Liu, ; Yi Ding,
| | - Yi Ding
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Chengcheng Liu, ; Yi Ding,
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Raman Spectroscopy for Assessment of Hard Dental Tissues in Periodontitis Treatment. Diagnostics (Basel) 2021; 11:diagnostics11091595. [PMID: 34573937 PMCID: PMC8472412 DOI: 10.3390/diagnostics11091595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/24/2021] [Accepted: 08/27/2021] [Indexed: 11/22/2022] Open
Abstract
The objective of this work was to use Raman spectroscopy to assess hard dental tissues after professional oral hygiene treatment and curettage. Spectral changes were identified, and the discriminant model of the specific changes of intensity of the Raman lines (i.e., of dentin, cementum, and enamel), before and after the dental procedures, was developed. This model showed that 6 weeks after the procedures, the hard dental tissues did not have differences and, thus, provided similar conditions for bio-film and dental plaque formation, tissue repair, and new attachment to the surface of the root.
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Raman Spectroscopy of Changes in the Tissues of Teeth with Periodontitis. Diagnostics (Basel) 2020; 10:diagnostics10110876. [PMID: 33126522 PMCID: PMC7692199 DOI: 10.3390/diagnostics10110876] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/12/2020] [Accepted: 10/20/2020] [Indexed: 11/16/2022] Open
Abstract
The results of experimental studies of the tissues of teeth with periodontitis, using the Raman spectroscopy method, are presented in this work. Spectral changes in the tissues of teeth with periodontitis were identified, and the results can be used for the correction of treatment of this disease in dental practice. Criteria for the noninvasive diagnosis of periodontitis, based on changes in tooth enamel spectral properties, were developed.
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