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Lee ES, de Josselin de Jong E, Kim E, Kim BI. Real-time optical detection of endodontic infection using bacterial autofluorescence. J Dent 2023; 136:104600. [PMID: 37392816 DOI: 10.1016/j.jdent.2023.104600] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/21/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023] Open
Abstract
OBJECTIVES For successful root canal treatment (RCT), it is essential to objectively assess the presence and activity of bacteria in the root canal system. However, current methods rely on subjective observations of root canal exudates. This study aimed to confirm whether real-time optical detection using bacterial autofluorescence can evaluate endodontic infection status by assessing the red fluorescence (RF) detected from root canal exudates. METHODS During RCT, endodontic paper points were used to collect root canal exudates scored using conventional organoleptic tests to assess the severity of root canal infections. RF on the paper points was assessed using quantitative light-induced fluorescence (QLF) technology. RF intensity and area from the paper points were quantified, and their correlations with infection severity were assessed using their organoleptic scores. The oral microbiome composition of RF samples was compared with non-red fluorescent (non-RF) samples. RESULTS The RF detection rate was nil and >98% in the non-infectious and severe groups. The RF intensity and area significantly increased with infection severity (p<0.001) and showed strong correlations with organoleptic scores (r=0.72, 0.82, respectively). The diagnostic accuracy for detecting root canal infection using RF intensity was good to excellent (AUC = 0.81-0.95) and increased with infection severity. The microbial diversity of the RF samples was significantly lower than that of the non-RF samples. Gram-negative anaerobic bacteria such as Prevotella and Porphyromonas were more predominant in RF samples. CONCLUSIONS Optical detection using bacterial autofluorescence can objectively evaluate endodontic infection status in real-time by assessing the RF of endodontic root canal exudates. CLINICAL SIGNIFICANCE This real-time optical technology can be utilised to detect endodontic bacterial infection without conventional incubation, allowing clinicians to determine the endpoint of chemomechanical debridement and increase the positive outcomes of RCTs.
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Affiliation(s)
- Eun-Song Lee
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea
| | - Elbert de Josselin de Jong
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea; Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam, Amsterdam, The Netherlands; Inspektor Research Systems BV, Amsterdam, The Netherlands
| | - Euiseong Kim
- Microscope Center, Department of Conservative Dentistry and Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea; Department of Electrical & Electronic Engineering, Yonsei University College of Engineering, Seoul, Korea
| | - Baek-Il Kim
- Department of Preventive Dentistry & Public Oral Health, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea.
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Minhaco VMTR, Maquera Huacho PM, Mancim Imbriani MJ, Tonon CC, Chorilli M, Rastelli ANDS, Spolidorio DMP. Improving antimicrobial activity against endodontic biofilm after exposure to blue light-activated novel curcumin nanoparticle. Photodiagnosis Photodyn Ther 2023; 42:103322. [PMID: 36773754 DOI: 10.1016/j.pdpdt.2023.103322] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/29/2022] [Accepted: 02/03/2023] [Indexed: 02/12/2023]
Abstract
New therapies involving natural products and nanobiotechnology open additional perspectives to reduce endodontic infections. Curcumin is a natural polyphenol extracted from the dry rhizome of curcuma long Linn with therapeutic properties for application in nanobiotechnology and as a photosensitizer for photodynamic therapy. This study aimed to synthesize a novel polymeric nanoparticle of poly (lactic-co-glycolic acid) (PLGA) loaded with curcumin (NP+Cur), and evaluate its antimicrobial activity against endodontic biofilms. Additionally, its biocompatibility using oral keratinocytes was assessed. The polymeric NP+Cur was prepared by the nanoprecipitation method. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were calculated for the three endodontic bacteria (Enterococcus faecalis, Streptococcus oralis and Actinomyces viscosus). Antibacterial activity of NP+Cur against single- and multispecies biofilm pre-formed on the botton 24-well plate and into dentin tubules of bovine teeth were evaluated by colony forming units and confocal laser scanning microscopy. The pre-irradiation time was 5 min followed by exposure to blue light-emitting diode at 450 nm for the photodynamic treatment. Cell viability using oral keratinocytes was assessed by Alamar Blue assay. MIC and MBC showed antibacterial activity of NP+Cur against endodontic bacteria. A treatment of pre-formed biofilms of endodontic bacteria with NP+Cur also significantly decreased bacterial viability. The concentration of 325 μg/mL of photoactivated NP+Cur was the one that most reduced the viability of the endodontic bacteria evaluated. Regarding biocompatibility, NP+Cur 325 μg/mL and pure nanoparticles showed a cell viability greater than 80%. The novel polymeric nanoparticles loaded with curcumin may be a promising adjunct use to treatment of endodontic infections.
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Affiliation(s)
- Vivian Maria Tellaroli Rodrigues Minhaco
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil; Department of Oral Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil
| | - Patricia Milagros Maquera Huacho
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil
| | - Maria Júlia Mancim Imbriani
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil; Department of Oral Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil
| | - Caroline Coradi Tonon
- Wellman Center for Photomedicine, Massachusetts General Hospital, and Harvard Medical School, 40 Blossom St, Boston, MA 02114, United States
| | - Marlus Chorilli
- Department of Drugs and Medicines, International School of Pharmaceuticals Sciences, São Paulo State University (Unesp), Rodovia Araraquara Jaú, Km 01, Araraquara, SP 14800-903, Brazil
| | - Alessandra Nara de Souza Rastelli
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil
| | - Denise Madalena Palomari Spolidorio
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Rua Humaitá, 1680, Araraquara, SP 14801-903, Brazil.
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Mun SJ, Jeon HS, Choi ES, Lee R, Kim SH, Han SY. Oral health status of inpatients with varying physical activity limitations in rehabilitation wards: A cross-sectional study. Medicine (Baltimore) 2021; 100:e26880. [PMID: 34397904 PMCID: PMC8360428 DOI: 10.1097/md.0000000000026880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/22/2021] [Indexed: 01/04/2023] Open
Abstract
Poor oral hygiene can be potentially life-threatening in inpatients. However, no basic protocol on oral hygiene customized for inpatients exists, and lack of oral care related knowledge, attitude, and skills among caregivers could be detrimental to the general health of patients. This study sought to identify the oral care practices and oral health status of inpatients with varying physical activity limitations in a rehabilitation ward.Sixty-one inpatients in a rehabilitation ward were evaluated for their medical and physical conditions and oral health status. These were assessed using the bedside oral exam, decayed, missing, filled teeth index, plaque index, gingival index, and caries activity test.In total, 40 men and 21 women (mean age, 56.6 years) were included in this study. Among them, 50.8% of the patients could brush their teeth unassisted, whereas 49.2% required assistance from an assistant for oral care. The proportion of patients receiving nasogastric tube feeding was higher in the group that could not provide oral self-care; 36.7% and 33.3% of these patients showed moderate and severe dysfunction, respectively, based on bedside oral exam. Scores for the swallowing, tongue, and total domains of bedside oral exam were poorer for patients who could not provide oral self-care (P < .01). The caries activity test indicated a moderate risk for both groups.Our findings suggest that an oral care protocol that considers the physical activity limitations in inpatients in rehabilitation wards is necessary to minimize negative influences on the systemic health of these patients.
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Affiliation(s)
- So Jung Mun
- Department of Dental Hygiene, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Republic of Korea
| | - Hyun Sun Jeon
- Department of Dental Hygiene, Yeoju Institute of Technology, Yeoju, Republic of Korea
| | - Eun Sil Choi
- Department of Dental Hygiene, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Republic of Korea
| | - Ree Lee
- Department of Dental Hygiene, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Republic of Korea
| | - Sung Hoon Kim
- Department of Rehabilitation Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Sun Young Han
- Department of Dental Hygiene, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Republic of Korea
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Garcia de Carvalho G, Sanchez-Puetate JC, Donatoni MC, Maquera Huacho PM, de Souza Rastelli AN, de Oliveira KT, Palomari Spolidorio DM, Leal Zandim-Barcelos D. Photodynamic inactivation using a chlorin-based photosensitizer with blue or red-light irradiation against single-species biofilms related to periodontitis. Photodiagnosis Photodyn Ther 2020; 31:101916. [PMID: 32645434 DOI: 10.1016/j.pdpdt.2020.101916] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/13/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022]
Abstract
Chlorin-e6 (Ce6), as a photosensitizer (PS), has demonstrated significant reduction of microorganisms' viability when irradiated by red light. However, the main absorption peak of this PS is located at blue light spectrum, which is less investigated. This study aimed to evaluate the effect of pure-chlorin-e6-mediated photodynamic inactivation (PDI) using different light sources (450 or 660 nm) against biofilms related to periodontitis. Streptococcus oralis, Fusobacterium nucleatum, Porphyromonas gingivalis, and Aggregatibacter actinomycetemcomitans single-species biofilms were developed under proper conditions for five days. PDI was performed using different concentrations of Ce6 (100 and 200 mM), wavelengths (450 and 660 nm) and comparisons were made after colony forming unit and confocal laser scanning microscopy (CLSM) analysis. The use of light and PS were also individually tested. The greatest bacterial elimination was observed in the group where PDI was employed with blue light and concentration of 200 mM for all bacterial strains tested (4.01 log10 for A. actinomycetemcomitans, and total elimination for P. gingivalis and S. oralis), except for F. nucleatum, where 3.46 log10 reduction was observed when red light and 200 mM Ce6 were applied (p < 0.05). The antimicrobial effects of PDI mediated by Ce6 for all single pathogenic biofilms were confirmed by live/dead staining under CLSM analysis. For all single-species biofilms, the use of PDI mediated by chlorin-e6 photosensitizer under blue or red-light irradiation (450 and 660 nm) demonstrated a significant reduction in bacterial viability, but blue light showed a promising higher photobiological effect, encouraging its adjuvant use to basic periodontitis treatment.
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Affiliation(s)
- Gabriel Garcia de Carvalho
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
| | - Julio Cesar Sanchez-Puetate
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
| | - Maria Carolina Donatoni
- Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, SP, 13565-905, Brazil.
| | - Patricia Milagros Maquera Huacho
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
| | - Alessandra Nara de Souza Rastelli
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
| | - Kleber Thiago de Oliveira
- Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, SP, 13565-905, Brazil.
| | - Denise Madalena Palomari Spolidorio
- Department of Physiology and Pathology, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
| | - Daniela Leal Zandim-Barcelos
- Department of Diagnosis and Surgery, São Paulo State University (Unesp), School of Dentistry, Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
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Kang SM, Jung HI, Kim BI. Susceptibility of oral bacteria to antibacterial photodynamic therapy. J Oral Microbiol 2019; 11:1644111. [PMID: 31448062 PMCID: PMC6691882 DOI: 10.1080/20002297.2019.1644111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/03/2019] [Accepted: 07/10/2019] [Indexed: 02/07/2023] Open
Abstract
Effective methods for managing the oral microbiome are necessary to ensure not only the oral but also the systemic health of a human body. The purpose of this study was to determine the sensitivity of four photosensitizers (PSs) to blue light in six representative oral bacterial species that cause intraoral diseases. The following six strains were investigated: Actinomyces israelii, Enterococcus faecium, Fusobacterium nucleatum, Lactobacillus gasseri, Streptococcus mutans, Veillonella parvula. PS stock solutions (1 mg/ml) were prepared by dissolving curcumin and protoporphyrin-IX in dimethyl sulfoxide, and resazurin and riboflavin in distilled water. The inoculation of 20 ml of a bacterial suspension cultured for 24 hours was mixed with 1,980 ml of each test solution, and then a light source was placed in front of the mixture. The irradiation wavelength was 405 nm and its applied energy was 25.3 J. The independent-samples t-test and one-way analysis of variance within groups were performed to compare the antibacterial effects in the four PSs. The antibacterial susceptibility when using different PSs and visible blue-light irradiation differed between the bacterial strains. Antibacterial photodynamic therapy that includes light exposure and PSs can be used to control the oral bacteria strains related to oral disease.
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Affiliation(s)
- Si-Mook Kang
- Department of Preventive Dentistry & Public Oral Health, BK 21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Hoi-In Jung
- Department of Preventive Dentistry & Public Oral Health, BK 21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Baek-Il Kim
- Department of Preventive Dentistry & Public Oral Health, BK 21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
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Kim GM, Kim BR, Lee ES, de Josselin de Jong E, Kim BI. Detection of residual resin-based orthodontic adhesive based on light-induced fluorescence. Photodiagnosis Photodyn Ther 2018; 24:69-74. [PMID: 30179668 DOI: 10.1016/j.pdpdt.2018.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 08/29/2018] [Accepted: 08/31/2018] [Indexed: 01/28/2023]
Abstract
INTRODUCTION This study evaluated the fluorescence of orthodontic adhesives using quantitative light-induced fluorescence-digital (QLF-D) images, and compared differences in the color characteristics of the fluorescence between adhesive and the adjacent tooth with that under white-light illumination in specimens containing residual adhesive of various thicknesses. METHODS Disc-shaped adhesive samples and samples comprising adhesive attached to extracted human teeth were prepared using Transbond XT, Blugloo, and Enlight, and they were ground to thicknesses ranging from 800 to 20 μm. Fluorescence and white-light images of the two types of specimens were taken with a QLF-D system. The color parameters for the fluorescence from the discs and the color difference (ΔE) between residual adhesive and the adjacent tooth were quantified in images using the CIE L*a*b* system. RESULTS The fluorescence color values of the discs differed significantly among the three adhesive products (P < 0.05). The ΔE values in fluorescence (ΔEF) and white-light (ΔEW) images for all three adhesives were lower for thinner residual adhesive specimens. The thickness of the adhesive could be perceived over a range of 50-100 μm for fluorescence images and 400-800 μm for white-light images (ΔE > 3.3). ΔEF was significantly larger than ΔEW for all of the residual adhesives, Blugloo specimens thicker than 100 μm, and Transbond XT and Enlight specimens thicker than 50 μm (P < 0.05). CONCLUSIONS Detecting and analyzing fluorescence signals can improve the ability to detect residual adhesive on a tooth and also provide thickness information.
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Affiliation(s)
- Gyung-Min Kim
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Bo-Ra Kim
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Eun-Song Lee
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea
| | - Elbert de Josselin de Jong
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea; Department of Health Services Research, University of Liverpool, Liverpool, United Kingdom; Inspektor Research Systems BV, Amsterdam, The Netherlands
| | - Baek-Il Kim
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, Republic of Korea.
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Jung EH, Lee ES, Jung HI, Kang SM, de Josselin de Jong E, Kim BI. Development of a fluorescence-image scoring system for assessing noncavitated occlusal caries. Photodiagnosis Photodyn Ther 2018; 21:36-42. [DOI: 10.1016/j.pdpdt.2017.10.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/09/2017] [Accepted: 10/31/2017] [Indexed: 11/16/2022]
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Khudanov B, Jung HI, Kahharova D, Lee JW, Hamidov I, Lee ES, Kim BI. Effect of an oral health education program based on the use of quantitative light-induced fluorescence technology in Uzbekistan adolescents. Photodiagnosis Photodyn Ther 2018; 21:379-384. [PMID: 29378255 DOI: 10.1016/j.pdpdt.2018.01.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/15/2017] [Accepted: 01/19/2018] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The aim of this study was to determine whether an oral health education program using a Qscan device based on quantitative light-induced fluorescence (QLF) technology could improve the oral hygiene status and oral health literacy of adolescents. MATERIALS AND METHODS One hundred adolescents aged 14-16 years attending a school in Tashkent city were included in this study. The participants were assigned to the following two groups using permuted block randomization technique: (i) control group (traditional learning) and (ii) experimental group (Qscan device-based learning). The participants included in the experimental group received additional education and training on dental plaque removal using the Qscan device. The accumulated levels of plaque were assessed in all participants, who also completed questionnaires about their oral health status, oral health knowledge, attitude, and behavior during an 8-week period. RESULTS There were statistically significant improvements in the experimental group compared to the control group in the plaque index (0.46 vs 0.07, p < .05), oral health knowledge (19.4 vs 28.8, p < .05), attitude (16.7 vs 20.2, p < .05), and behavior (19.9 vs 30.5, p < .05). CONCLUSIONS This study has demonstrated that an oral health education program based on the use of QLF technology could be useful for improving the oral hygiene status and oral health literacy of adolescents in Uzbekistan.
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Affiliation(s)
- Bakhtinur Khudanov
- Department of Preventive Dentistry, Tashkent State Dental Institute, Tashkent, Uzbekistan
| | - Hoi In Jung
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Oral Science Research Institute, Yonsei University College of Dentistry, Republic of Korea
| | - Dono Kahharova
- Department of Preventive Dentistry, Tashkent State Dental Institute, Tashkent, Uzbekistan
| | - Jeong-Woo Lee
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Oral Science Research Institute, Yonsei University College of Dentistry, Republic of Korea
| | - Ilhom Hamidov
- Department of Preventive Dentistry, Tashkent State Dental Institute, Tashkent, Uzbekistan
| | - Eun-Song Lee
- Department of Preventive Dentistry & Public Oral Health, BK21 PLUS Project, Oral Science Research Institute, Yonsei University College of Dentistry, Republic of Korea
| | - Baek-Il Kim
- Department of Preventive Dentistry, Tashkent State Dental Institute, Tashkent, Uzbekistan.
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