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Lapirattanakul J, Nomura R, Okawa R, Tantivitayakul P, Kaypetch R, Lehrkinder A, Lingström P, Birkhed D, Matsumoto-Nakano M, Nakano K. Multilocus sequence typing and phenotypic properties of Streptococcus mutans from Thai children with different caries statuses. BMC Oral Health 2024; 24:1063. [PMID: 39261810 PMCID: PMC11391724 DOI: 10.1186/s12903-024-04759-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 08/16/2024] [Indexed: 09/13/2024] Open
Abstract
BACKGROUND Streptococcus mutans is studied for its acidogenic and aciduric characteristics, notably its biofilm formation in the presence of sucrose, toward its role in the caries process. Variations in both genotype and phenotype have been reported among clinical isolates of S. mutans. This study aimed to examine genotypic and phenotypic characteristics of S. mutans obtained from Thai children with varying caries statuses. METHODS We determined the presence of S. mutans and caries status in 395 children aged 3-4 years. From 325 children carrying S. mutans, we selected 90 with different caries statuses-caries-free (CF; n = 30), low severity of caries (LC; n = 30), or high severity of caries (HC; n = 30). Three isolates of S. mutans were taken from each child, thus, a total of 270 isolates were obtained. Multilocus sequence typing (MLST) was used to genotype the isolates and assess their clonal relationships. The properties, including biofilm formation, collagen binding, and acid production and tolerance were also evaluated. RESULTS Children with carious lesions showed a higher detection rate and number of S. mutans in saliva than those without caries. S. mutans from individuals with HC status showed the lowest biofilm formation ability, while this group had the highest detection rate of collagen-binding isolates. There was no difference in acid production or tolerance by caries status. Genotyping by MLST did not reveal any clone of S. mutans specific to CF status. This result remained even when we included MLST data from the open-access PubMLST database. MLST did identify clones containing only strains from caries-affected hosts, but tests of their phenotypic properties did not reveal any differences between S. mutans from these clones and clones that were from both caries-free and caries-affected children. CONCLUSIONS The clonal relationships of S. mutans indicated by MLST were not associated with the status of dental caries in the host.
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Affiliation(s)
- Jinthana Lapirattanakul
- Department of Oral Microbiology, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Rajthevi, Bangkok, 10400, Thailand.
| | - Ryota Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
- Department of Pediatric Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Rena Okawa
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Pornpen Tantivitayakul
- Department of Oral Microbiology, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Rajthevi, Bangkok, 10400, Thailand
| | - Rattiporn Kaypetch
- Research Office, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Anna Lehrkinder
- Department of Cariology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Peter Lingström
- Department of Cariology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Michiyo Matsumoto-Nakano
- Department of Pediatric Dentistry, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Kazuhiko Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
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Hamouda RA, Makharita RR, Qarabai FAK, Shahabuddin FS, Saddiq AA, Bahammam LA, El-Far SW, Bukhari MA, Elaidarous MA, Abdella A. Antibacterial Activities of Ag/Cellulose Nanocomposites Derived from Marine Environment Algae against Bacterial Tooth Decay. Microorganisms 2023; 12:1. [PMID: 38276170 PMCID: PMC10820646 DOI: 10.3390/microorganisms12010001] [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: 11/14/2023] [Revised: 12/04/2023] [Accepted: 12/15/2023] [Indexed: 01/27/2024] Open
Abstract
Dental caries is an infectious oral disease caused by the presence of different bacteria in biofilms. Multidrug resistance (MDR) is a major challenge of dental caries treatment. Swabs were taken from 65 patients with dental caries in Makkah, Saudi Arabia. Swabs were cultivated on mitis salivarius agar and de Man, Rogosa, and Sharpe (MRS) agar. VITEK 2 was used for the identification of isolated bacteria. Antibiotic susceptibility testing of the isolated bacteria was performed using commercial antibiotic disks. Ulva lactuca was used as a reducing agent and cellulose source to create nanocellulose and Ag/cellulose nanocomposites. Fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction spectroscopy (XRD) were used to characterize nanocellulose and Ag/cellulose nanocomposites. The results showed that most bacterial isolates were Streptococcus spp., followed by Staphylococcus spp. on mitis salivarius media. Lactobacillus spp. and Corynebacterium group f-1 were the bacterial isolates on de Man, Rogosa, and Sharpe (MRS) media. The antibiotic susceptibility test revealed resistance rates of 77%, 93%, 0, 83%, 79%, and 79% against penicillin G, Augmentin, metronidazole, ampicillin, ciprofloxacin, and cotrimoxazole, respectively. Ag/cellulose nanocomposites and Ag/cellulose nanocomposites with fluoride were the most effective antibacterial agents. The aim of this work was to assess the antibacterial activity of Ag/cellulose nanocomposites with and without fluoride against bacteria isolated from the oral cavities of patients with dental caries. This study demonstrated that Ag/cellulose nanocomposites have antibacterial properties against multidrug-resistant bacteria that cause dental caries.
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Affiliation(s)
- Ragaa A. Hamouda
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
- Department of Microbial Biotechnology, Genetic Engineering and Biotechnology Research Institute (GEBRI), University of Sadat City, Sadat City 32897, Egypt
| | - Rabab R. Makharita
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
- Botany and Microbiology Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Fauzia A. K. Qarabai
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
| | | | - Amna A. Saddiq
- Department of Biology, College of Sciences and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia; (R.A.H.); (R.R.M.); (F.A.K.Q.); (A.A.S.)
| | - Laila Ahmed Bahammam
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Shaymaa W. El-Far
- Division of Pharmaceutical Microbiology, Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Taif University, Taif 21974, Saudi Arabia;
| | - Mamdouh A. Bukhari
- Regional Laboratory, Laboratories and Blood Banks Administration, Ministry of Health, 7780 Wali Alahed, Makkah P.O. Box 24353-4537, Saudi Arabia; (M.A.B.); (M.A.E.)
| | - Mohammad A. Elaidarous
- Regional Laboratory, Laboratories and Blood Banks Administration, Ministry of Health, 7780 Wali Alahed, Makkah P.O. Box 24353-4537, Saudi Arabia; (M.A.B.); (M.A.E.)
| | - Asmaa Abdella
- Department of Industrial Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City 32897, Egypt
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Villhauer A, Zhu M, Shi W, Xie XJ, Hughes P, Lesch A, Weber-Gasparoni K, Kolker J, Drake D, Banas JA. Role of mutans streptococci, acid tolerant bacteria and oral Candida species in predicting the onset of early childhood caries. FRONTIERS IN DENTAL MEDICINE 2023; 4:991746. [PMID: 38188893 PMCID: PMC10768932 DOI: 10.3389/fdmed.2023.991746] [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] [Indexed: 01/09/2024] Open
Abstract
Aim Early childhood caries is the most common chronic infectious disease in children in the United States. This study, which is part of a larger, longitudinal study exploring oral microbiological components of caries development in children, reports on the impact of total mutans streptococci (MS), total acid tolerant bacteria and Candida species on the development of dental caries in a subset of these children. Of particular interest was the relationship between caries development and co-colonization of mutans streptococci and Candida species. Methods Children between the ages of 12 and 47 months displaying no evidence of dental caries were recruited for a longitudinal study (n = 130). Twelve age- and gender-matched pairs were selected. In each pair, one child developed caries during the study, and one did not. Whole mouth plaque samples were collected by swab at baseline and every 6 months thereafter for a duration of 18 months and spiral plated for microbial counts (CFU/ml). Cut-offs based on percent of total cultivable flora were designated for all microbial measures. A scoring system designated the Plaque Microbial Index (PMI) was developed for use in statistical analyses to assess potential predictive factors for caries risk assessment. Results Children who developed caries were significantly more likely to harbor higher percentages of acid tolerant bacteria (p = 0.003), MS (p < 0.001) and have Candida species present (p < 0.001) at ≥1 visit leading up to caries onset. Mean PMI scores derived from the aforementioned microbial measures, were higher for caries active children than caries free children (p = 0.000147). Co-colonization of MS and Candida species was significantly associated with caries development (p < 0.001) and detection of both at the same visit had a 100% positive predictive value and 60% negative predictive value for caries development. Conclusion In children who developed caries, there was a statistically significant association with the percent of total flora that was acid tolerant, the percent of MS, the presence of Candida and co-colonization of MS and Candida species. Combining these microbial measures into PMI scores further delineated children who developed caries from those who remained caries-free. These microbiological measures show potential as predictive factors and risk assessment tools for caries development.
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Affiliation(s)
- Alissa Villhauer
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Min Zhu
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Wei Shi
- Division of Biostatistics and Computational Biology, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Xian Jin Xie
- Division of Biostatistics and Computational Biology, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Pamella Hughes
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Amy Lesch
- Department of Pediatric Dentistry, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Karin Weber-Gasparoni
- Department of Pediatric Dentistry, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Justine Kolker
- Department of Operative Dentistry, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - David Drake
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
| | - Jeffrey A. Banas
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry and Dental Clinics, Iowa City, IA, United States
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Mourão PS, Coelho VS, Souto-Souza D, Machado GF, Moreira LV, Duarte-Rodrigues L, Ramos-Jorge J, Ramos-Jorge ML. Association between child's behaviour during first dental appointment and effectiveness of dental plaque removal by caregivers. Int J Dent Hyg 2022. [PMID: 36544268 DOI: 10.1111/idh.12653] [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: 07/29/2021] [Revised: 10/07/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To evaluate the association between the behaviour of children aged 1 to 4 years during their dental appointment and the effectiveness of dental plaque removal by caregivers. METHODS This longitudinal study with intervention had the participation of 146 children (mean age = 34.89 months), 75 of whom (51.4%) showed positive behaviour (+ and ++) and 71 (48.6%), negative behaviour (- and - -). The children were evaluated at the first dental appointment, according to the Frankl scale. They were subjected to an assessment of oral conditions, and their plaque level was recorded (Quigley-Hein Index modified by Turesky) using the Evince® device. Caregivers received oral hygiene guidance. The dental plaque assessment was performed before giving the oral hygiene guidance and 14 days later. The statistical analysis included a descriptive assessment and the Wilcoxon test (p < 0.05). RESULTS Mean dental plaque levels dropped significantly from the first to the second assessment (p < 0.001). The sample was divided according to the child's behaviour, observing that only the group of children with positive behaviour showed significantly less dental plaque in the second assessment (p < 0.001). CONCLUSION The positive behaviour of children aged 1 to 4 years during the first dental appointments is associated with more effective dental plaque removal by caregivers.
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Affiliation(s)
- Priscila Seixas Mourão
- Department of Pediatric Dentistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil
| | - Valéria Silveira Coelho
- Department of Pediatric Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Débora Souto-Souza
- Department of Pediatric Dentistry, Centro Universitário do Triângulo (UNITRI), Uberlândia, Brazil.,Department of Pediatric Dentistry, Universidade Federal de Uberlândia (UFU), Uberlândia, Brazil
| | - Gabrielly Fernandes Machado
- Department of Pediatric Dentistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil
| | - Luana Viviam Moreira
- Department of Pediatric Dentistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil
| | - Lucas Duarte-Rodrigues
- Department of Pediatric Dentistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil
| | - Joana Ramos-Jorge
- Department of Pediatric Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Maria Letícia Ramos-Jorge
- Department of Pediatric Dentistry, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil
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Functional nanomaterials and their potentials in antibacterial treatment of dental caries. Colloids Surf B Biointerfaces 2022; 218:112761. [DOI: 10.1016/j.colsurfb.2022.112761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/16/2022] [Accepted: 08/04/2022] [Indexed: 11/18/2022]
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Chen X, Daliri EBM, Chelliah R, Oh DH. Isolation and Identification of Potentially Pathogenic Microorganisms Associated with Dental Caries in Human Teeth Biofilms. Microorganisms 2020; 8:E1596. [PMID: 33081291 PMCID: PMC7603000 DOI: 10.3390/microorganisms8101596] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/12/2020] [Accepted: 10/15/2020] [Indexed: 12/20/2022] Open
Abstract
Dental caries is attributed to the predominance of cariogenic microorganisms. Cariogenic microorganisms are pathological factors leading to acidification of the oral microenvironment, which is related to the initiation and progression of caries. The accepted cariogenic microorganism is Streptococcus mutans (S. mutans). However, studies have found that caries could occur in the absence of S. mutans. This study aimed to assess the presence of potentially cariogenic microorganisms in human teeth biofilm. The microorganisms were isolated from human mouth and freshly extracted human maxillary incisors extracted for reasons of caries. The isolates were sorted based on their acidogenic and aciduric properties, and the S. mutans was used as the reference strain. Four potentially cariogenic strains were selected. The selected strains were identified as Streptococcus salivarius (S. salivarius), Streptococcus anginosus (S. anginosus), Leuconostoc mesenteroides (L. mesenteroides), and Lactobacillus sakei (L. sakei) through morphological analysis followed by 16S rRNA gene sequence analysis. The cariogenicity of isolates was analyzed. We show, for the first time, an association between L. sakei (present in fermented food) and dental caries. The data provide useful information on the role of lactic acid bacteria from fermented foods and oral commensal streptococci in dental caries.
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Affiliation(s)
| | | | | | - Deog-Hwan Oh
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 200-701, Korea; (X.C.); (E.B.-M.D.); (R.C.)
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