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Cocoș DI, Dumitriu Buzia O, Tatu AL, Dinu M, Nwabudike LC, Stefan CS, Earar K, Galea C. Challenges in Optimizing Nanoplatforms Used for Local and Systemic Delivery in the Oral Cavity. Pharmaceutics 2024; 16:626. [PMID: 38794288 PMCID: PMC11124955 DOI: 10.3390/pharmaceutics16050626] [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: 03/19/2024] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 05/26/2024] Open
Abstract
In this study, we focused on innovative approaches to improve drug administration in oral pathology, especially by transmucosal and transdermal pathways. These improvements refer to the type of microneedles used (proposing needles in the saw), to the use of certain enhancers such as essential oils (which, besides the amplifier action, also have intrinsic actions on oral health), to associations of active substances with synergistic action, as well as the use of copolymeric membranes, cemented directly on the tooth. We also propose a review of the principles of release at the level of the oral mucosa and of the main release systems used in oral pathology. Controlled failure systems applicable in oral pathology include the following: fast dissolving films, mucoadhesive tablets, hydrogels, intraoral mucoadhesive films, composite wafers, and smart drugs. The novelty elements brought by this paper refer to the possibilities of optimizing the localized drug delivery system in osteoarthritis of the temporomandibular joint, neuropathic pain, oral cancer, periodontitis, and pericoronitis, as well as in maintaining oral health. We would like to mention the possibility of incorporating natural products into the controlled failure systems used in oral pathology, paying special attention to essential oils.
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Affiliation(s)
- Dorin Ioan Cocoș
- Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, “Dunarea de Jos” the University of Galati, 800008 Galati, Romania; (D.I.C.); (C.S.S.); (K.E.)
| | - Olimpia Dumitriu Buzia
- Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, “Dunarea de Jos” the University of Galati, 800008 Galati, Romania; (D.I.C.); (C.S.S.); (K.E.)
| | - Alin Laurențiu Tatu
- Clinical Medical Department, Faculty of Medicine and Pharmacy, “Dunarea de Jos” University, 800008 Galati, Romania;
- Dermatology Department, “Sf. Cuvioasa Parascheva” Clinical Hospital of Infectious Diseases, 800179 Galati, Romania
- Multidisciplinary Integrative Center for Dermatologic Interface Research MIC-DIR, 800010 Galati, Romania
| | - Monica Dinu
- Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, “Dunarea de Jos” the University of Galati, 800008 Galati, Romania; (D.I.C.); (C.S.S.); (K.E.)
| | | | - Claudia Simona Stefan
- Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, “Dunarea de Jos” the University of Galati, 800008 Galati, Romania; (D.I.C.); (C.S.S.); (K.E.)
| | - Kamel Earar
- Centre in the Medical-Pharmaceutical Field, Faculty of Medicine and Pharmacy, “Dunarea de Jos” the University of Galati, 800008 Galati, Romania; (D.I.C.); (C.S.S.); (K.E.)
| | - Carmen Galea
- Department of Medical Disciplines, Faculty of Dental Medicine, University of Targu Mures, 540099 Targu Mures, Romania;
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Payungwong T, Angkulkrerkkrai K, Chaiboonchoe A, Lausoontornsiri W, Jirawatnotai S, Chindavijak S. Comparison of mutation landscapes of pretreatment versus recurrent squamous cell carcinoma of the oral cavity: The possible mechanism of resistance to standard treatment. Cancer Rep (Hoboken) 2024; 7:e2004. [PMID: 38477073 DOI: 10.1002/cnr2.2004] [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: 05/24/2023] [Revised: 10/19/2023] [Accepted: 02/05/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND A high recurrent rate of oral squamous cell carcinoma (OSCC) is a major concern in head and neck cancer treatment. The study of the genetic mutation landscape in recurrent OSCC may provide information on certain mutations associated with the pathobiology and treatment response of the OSCC. AIM We investigated the mutation landscape of matched pretreatment and recurrent tumors to understand the influence of genetic mutations on the pathobiology and clinical outcomes in OSCC. METHODS AND RESULTS We sequenced 33 formalin-fixed paraffin-embedded (FFPE) recurrent tumors, primary tumors, and primary tumors before recurrence that matched the recurrent tumors collected from Rajavithi Hospital during 2019-2021. We identified recurrent mutations from these samples by the Oncomine Ion Torrent-based next-generation sequencing on the 517 cancer-associated gene panel. From the results, we found that the most commonly mutated gene in the cohort is a histone methyltransferase KMT2D (54.55%), implicating that aberrance in epigenetic regulation may play a role in oral cancer tumorigenesis. Functional protein association network analysis of the gene frequently mutated in the recurrent tumors showed enrichment of genes that regulate the cancer cell cycle, that is, MRE11A, CDKN2A, and CYLD. This finding was confirmed in the primary-recurring matched pair. We found that recurrent tumors possess a small but recurring group of genes, with presumably the subclonal mutations driving the recurrence of the tumor, suggesting that the recurrent disease originated from a small fraction of the cancer cell that survives standard treatment. These genes were absent in the primary tumor with a good response to the standard treatment. On the other hand, we found an enrichment of DNA repair genes, namely ATR, BRCA1, BRCA2, RAD50, and MUTYH, in nonrecurrent tumors suggesting that the mutations in the DNA repair pathway may at least partially explain the different response to the standard treatment. CONCLUSIONS Our pilot study identified pathways of carcinogenesis in oral cancer and specific gene sets that indicate treatment responses and prognoses in this group of patients.
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Affiliation(s)
- Tongchai Payungwong
- Siriraj Center of Research Excellence in Systems Pharmacology, Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Krittaya Angkulkrerkkrai
- Center of Excellence of Otolaryngology Head and Neck Surgery, Rajavithi Hospital, Bangkok, Thailand
| | - Amphun Chaiboonchoe
- Siriraj Center of Research Excellence in Systems Pharmacology, Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Siwanon Jirawatnotai
- Siriraj Center of Research Excellence in Systems Pharmacology, Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Somjin Chindavijak
- Center of Excellence of Otolaryngology Head and Neck Surgery, Rajavithi Hospital, Bangkok, Thailand
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Tu C, Wang G, Hu Z, Wang S, Yan Q, Liu X. Burden of oral disorders, 1990-2019: estimates from the Global Burden of Disease Study 2019. Arch Med Sci 2023; 19:930-940. [PMID: 37560733 PMCID: PMC10408023 DOI: 10.5114/aoms/165962] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/08/2023] [Indexed: 08/11/2023] Open
Abstract
INTRODUCTION The aim of this study was to understand the global incidence and disability-adjusted life years (DALY) of oral disorders by age, gender, region, and Sociodemographic Index (SDI) from 1990 to 2019. MATERIAL AND METHODS The estimated annual percentage change (EAPC) and 95% confidence intervals (CIs) were used to assess the trends in age-standardized incidence and DALY rates from 1990 to 2019. RESULTS The global age-standardized incidence rate (EAPC = 0.01) of oral disorders increased slightly from 1990 to 2019. From 1990 to 2019, the age-standardized DALY rate decreased in high-SDI (EAPC = -0.43) and high-middle-SDI (EAPC = -0.14) regions, but it showed increasing trends in low-SDI (EAPC = 0.22), low-middle-SDI (EAPC = 0.36), and middle-SDI (EAPC = 0.17) regions. The EAPC in the age-standardized DALY rate was negatively correlated with the regional SDI value (ρ = -0.402, p = 0.001). From 1990 to 2019, the region with the largest increase in age-standardized DALY rate was South Asia (EAPC = 0.67), while the country with the greatest increase in age-standardized DALY rate was India (EAPC = 0.82). CONCLUSIONS From 1990 to 2019, the global age-standardized incidence rate of oral disorders showed a slight increasing trend. It is necessary to control the increase in DALY and the disease burden associated with oral disorders in low-, low-middle-, and middle-SDI regions, such as South Asia, particularly in India.
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Affiliation(s)
- Chengwei Tu
- Department of Stomatology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Scicences, Vrije Universiteit Amsterdam (UV), Amsterdam Movement Sciences (AMS), Amsterdam, the Netherlands
| | - Gege Wang
- Department of Stomatology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhangyi Hu
- Department of Rehabilitation, Wenzhou Ouhai District Third People’s Hospital, Wenzhou, Zhejiang, China
| | - Shuyu Wang
- Department of Global Health, Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Qianqian Yan
- Department of Global Health, Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Xueying Liu
- Department of Stomatology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Veynachter T, Sural Y, Baudot P, Remen T, Baudet A, Kabuth B, Clement C. Diagnostic performance of two teledentistry tools in elderly care facilities: the ONE-1 protocol for a pilot prospective diagnostic study. BMJ Open 2023; 13:e063906. [PMID: 37012012 PMCID: PMC10083750 DOI: 10.1136/bmjopen-2022-063906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/04/2023] Open
Abstract
INTRODUCTION Elderly people living in care facilities suffer from difficulties in accessing preventive and curative dental care. This leads to poor oral health, which is an increased risk of systemic diseases, in a fragile and dependent population. All this contributes to a progressive loss of autonomy and a decreased quality of life. The use of information and communication technologies through oral telemedicine could help to overcome these barriers. We described the protocol for evaluating the diagnostic performance of two intraoral cameras against a gold standard clinical examination. METHODS AND ANALYSIS We conduct a pilot multicentric and prospective diagnostic study (a minimal-risk, minimal-burden interventional research called ONE-1 (for Oral graNd Est step 1)) on two intraoral diagnostic tools (Soprocare camera and consumer camera) compared with a reference intraoral examination. Patients in four elderly care facilities will be included, with randomisation of participant selection and randomisation of the order of the three intraoral examinations performed by a dental surgeon. We will evaluate the diagnostic performance of each device with the asynchronous analysis of videos by two independent dental surgeons against the clinical gold standard examination performed by a single, third dental examiner. The primary outcome is the presence of at least one tooth decay in the dentition of each study participant. Second, we will evaluate the presence of other dental or oral diseases, and the time required to perform each examination. Finally, we will evaluate the organisation of patient follow-up. ETHICS AND DISSEMINATION The protocol has been approved by the French ethics committee (Protection to Persons Committee, Nord-Ouest IV on 9 June 2021 and on 28 November 2022). Results will be disseminated through conferences' presentations and publications in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT05089214.
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Affiliation(s)
- Thomas Veynachter
- Interpsy Research Unit, UR 4432, Lorraine University, Nancy, France
- CHRU Nancy, Department of Public Health Dentistry, University Hospital, University of Lorraine, Vandœuvre-lès-Nancy, France
| | - Yelda Sural
- CHRU Nancy, University Hospital, Lorraine University, Nancy, France
| | | | - Thomas Remen
- CHRU Nancy, Unit of Methodology, Data Management and Statistic, Nancy University Hospital, Vandœuvre-lès-Nancy, France
| | - Alexandre Baudet
- CHRU Nancy, Department of Public Health Dentistry, University Hospital, University of Lorraine, Vandœuvre-lès-Nancy, France
| | - Bernard Kabuth
- Interpsy Research Unit, UR 4432, Lorraine University, Nancy, France
- Psychotherapeutic center of Nancy, Laxou, France
| | - Celine Clement
- Interpsy Research Unit, UR 4432, Lorraine University, Nancy, France
- CHRU Nancy, Department of Public Health Dentistry, University Hospital, University of Lorraine, Vandœuvre-lès-Nancy, France
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Zhang OL, Niu JY, Yin IX, Yu OY, Mei ML, Chu CH. Bioactive Materials for Caries Management: A Literature Review. Dent J (Basel) 2023; 11:dj11030059. [PMID: 36975556 PMCID: PMC10047026 DOI: 10.3390/dj11030059] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
Researchers have developed novel bioactive materials for caries management. Many clinicians also favour these materials, which fit their contemporary practice philosophy of using the medical model of caries management and minimally invasive dentistry. Although there is no consensus on the definition of bioactive materials, bioactive materials in cariology are generally considered to be those that can form hydroxyapatite crystals on the tooth surface. Common bioactive materials include fluoride-based materials, calcium- and phosphate-based materials, graphene-based materials, metal and metal-oxide nanomaterials and peptide-based materials. Silver diamine fluoride (SDF) is a fluoride-based material containing silver; silver is antibacterial and fluoride promotes remineralisation. Casein phosphopeptide-amorphous calcium phosphate is a calcium- and phosphate-based material that can be added to toothpaste and chewing gum for caries prevention. Researchers use graphene-based materials and metal or metal-oxide nanomaterials as anticaries agents. Graphene-based materials, such as graphene oxide-silver, have antibacterial and mineralising properties. Metal and metal-oxide nanomaterials, such as silver and copper oxide, are antimicrobial. Incorporating mineralising materials could introduce remineralising properties to metallic nanoparticles. Researchers have also developed antimicrobial peptides with mineralising properties for caries prevention. The purpose of this literature review is to provide an overview of current bioactive materials for caries management.
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Affiliation(s)
| | - John Yun Niu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Iris Xiaoxue Yin
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Ollie Yiru Yu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - May Lei Mei
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
- Faculty of Dentistry, The University of Otago, Dunedin 9054, New Zealand
| | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
- Correspondence:
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Abe M, Ohsato A, Fujihara Y, Hoshi K, Yanagimoto S. A Comparative Study of Periodontal Health Status between International and Domestic University Students in Japan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3866. [PMID: 36900877 PMCID: PMC10001467 DOI: 10.3390/ijerph20053866] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/10/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND In our previous study, international university students showed a significantly higher dental caries morbidity rate than domestic students. On the other hand, the periodontal health status of international university students has not been clarified yet. In this study, we compared the periodontal health status of international and domestic university students in Japan. METHODS We conducted a retrospective review of the clinical data of the university students that visited a dental clinic in the division for health service promotion at a university in Tokyo for screening between April 2017 and March 2019. Bleeding on probing (BOP), calculus deposition and probing pocket depth (PPD) were investigated. RESULTS The records of 231 university students (79 international and 152 domestic university students) were analyzed; 84.8% of international students were from Asian countries (n = 67). The international university students showed a higher percentage of BOP than domestic students (49.4% and 34.2%, respectively: p < 0.05) and they showed more extensive calculus deposition (calculus grading score [CGS]) than domestic university students (1.68 and 1.43, respectively: p < 0.01), despite no significant difference in PPD. CONCLUSIONS The current study shows that international university students have poorer periodontal health than domestic students in Japan, even though the result might include many uncertainties and possible biases. To prevent severe periodontitis in the future, regular checkups and thorough oral health care are essential for the university students, especially those from foreign countries.
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Affiliation(s)
- Masanobu Abe
- Division for Health Service Promotion, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Oral & Maxillofacial Surgery, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Ai Ohsato
- Division for Health Service Promotion, The University of Tokyo, Tokyo 113-0033, Japan
| | - Yuko Fujihara
- Division for Health Service Promotion, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Oral & Maxillofacial Surgery, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Kazuto Hoshi
- Department of Oral & Maxillofacial Surgery, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Shintaro Yanagimoto
- Division for Health Service Promotion, The University of Tokyo, Tokyo 113-0033, Japan
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Benzian H, Watt R, Makino Y, Stauf N, Varenne B. WHO calls to end the global crisis of oral health. Lancet 2022; 400:1909-1910. [PMID: 36410360 DOI: 10.1016/s0140-6736(22)02322-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/04/2022] [Indexed: 11/19/2022]
Affiliation(s)
- Habib Benzian
- WHO Collaborating Center Quality Improvement and Evidence-based Dentistry, Department of Epidemiology and Health Promotion, College of Dentistry, New York University, New York, NY 10010, USA.
| | - Richard Watt
- Department of Epidemiology and Public Health, WHO Collaborating Centre for Oral Health Inequalities and Public Health, University College London, London, UK
| | - Yuka Makino
- Noncommunicable Diseases Team, WHO Regional Office for Africa, Brazzaville, Republic of Congo
| | | | - Benoit Varenne
- Oral Health Programme, Noncommunicable Diseases Department, World Health Organization, Geneva, Switzerland
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Shu Z, Zhang C, Yan L, Lei H, Peng C, Liu S, Fan L, Chu Y. Antibacterial and osteoconductive polycaprolactone/polylactic acid/nano-hydroxyapatite/Cu@ZIF-8 GBR membrane with asymmetric porous structure. Int J Biol Macromol 2022; 224:1040-1051. [DOI: 10.1016/j.ijbiomac.2022.10.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 10/09/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
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Yang Z, Liu W, Liu H, Li R, Chang L, Kan S, Hao M, Wang D. The applications of polysaccharides in dentistry. Front Bioeng Biotechnol 2022; 10:970041. [PMID: 35935501 PMCID: PMC9355030 DOI: 10.3389/fbioe.2022.970041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/04/2022] [Indexed: 12/03/2022] Open
Abstract
Polysaccharides are natural polymers widely present in animals, plants, and several microorganisms. Polysaccharides have remarkable properties, including easy extractions, degradability, and renewability, and have no apparent toxicity, making them ideal for biomedical applications. Moreover, polysaccharides are suitable for repairing oral tissue defects and treating oral diseases due to their excellent biocompatibility, biosafety, anti-inflammatory, and antibacterial properties. The oral cavity is a relatively complex environment vulnerable to numerous conditions, including soft tissue diseases, hard tissue disorders, and as well as soft and hard tissue diseases, all of which are complex to treat. In this article, we reviewed different structures of natural polysaccharides with high commercial values and their applications in treating various oral disease, such as drug delivery, tissue regeneration, material modification, and tissue repair.
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Affiliation(s)
- Zhijing Yang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Weiwei Liu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Huimin Liu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Rong Li
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
| | - Lu Chang
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Shaoning Kan
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Ming Hao
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
| | - Dongxu Wang
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, China
- *Correspondence: Dongxu Wang,
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Oral Hygiene Practices and Oral Health Knowledge among Students in Split, Croatia. Healthcare (Basel) 2022; 10:healthcare10020406. [PMID: 35207018 PMCID: PMC8872387 DOI: 10.3390/healthcare10020406] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/13/2022] [Accepted: 02/18/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Knowledge of oral health is a fundamental prerequisite for healthy behavior, allowing individuals to take measures to protect their overall health. This cross-sectional study aimed to examine the knowledge of oral health as well as to assess the oral hygiene habits among healthcare and non-healthcare students. Methods: The study was based on a questionnaire and was conducted among 1088 students. Most of the students, 67.6% were non-healthcare students. Data were processed by Mann–Whitney or Kruskal–Wallis one-way ANOVA test. Results: The correct median score and interquartile range were 11 (9–13) for all surveyed students, 11 (9–12) for students in non-healthcare programs and 13 (11–14) for students in healthcare programs. Students did not significantly differ in the knowledge of oral health by gender (p = 0.082) but did differ by age, study program, and year of study (p ≤ 0.001). Students whose family members work in the field of dental medicine also showed better oral health knowledge (p ≤ 0.001). Conclusion: The results showed good oral health knowledge among tested university students. However, it is important to emphasize that students who showed better knowledge more often used additional aids to maintain oral hygiene; therefore, the obtained data underline the importance of students’ further education in order to better understand and maintain oral health.
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Transcriptional Profiling Reveals the Importance of RcrR in the Regulation of Multiple Sugar Transportation and Biofilm Formation in Streptococcus mutans. mSystems 2021; 6:e0078821. [PMID: 34427509 PMCID: PMC8407328 DOI: 10.1128/msystems.00788-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The ability of Streptococcus mutans to survive and cause dental caries is dependent on its ability to metabolize various carbohydrates, accompanied by extracellular polysaccharide synthesis and biofilm formation. Here, the role of an rel competence-related regulator (RcrR) in the regulation of multiple sugar transportation and biofilm formation is reported. The deletion of the rcrR gene in S. mutans caused delayed growth, decreased biofilm formation ability, and affected the expression level of its multiple sugar transportation-related genes. Transcriptional profiling revealed 17 differentially expressed genes in the rcrR mutant. Five were downregulated and clustered with the sugar phosphotransferase (PTS) systems (mannitol- and trehalose-specific PTS systems). The conserved sites bound by the rcrR promoter were then determined by electrophoretic mobility shift assays (EMSAs) and DNase I footprinting assays. Furthermore, a potential binding motif in the promoters of the two PTS operons was predicted using MEME Suite 5.1.1. RcrR could bind to the promoter regions of the two operons in vitro, and the sugar transporter-related genes of the two operons were upregulated in an rcrR-overexpressing strain. In addition, when RcrR-binding sites were deleted, the growth rates and final yield of S. mutans were significantly decreased in tryptone-vitamin (TV) medium supplemented with different sugars, but not in absolute TV medium. These results revealed that RcrR acted as a transcription activator to regulate the two PTS systems, accompanied by multiple sugar transportation and biofilm formation. Collectively, these results indicate that RcrR is a critical transcription factor in S. mutans that regulates bacterial growth, biofilm formation, and multiple sugar transportation. IMPORTANCE The human oral cavity is a constantly changing environment. Tooth decay is a commonly prevalent chronic disease mainly caused by the cariogenic bacterium Streptococcus mutans. S. mutans is an oral pathogen that metabolizes various carbohydrates into extracellular polysaccharides (EPSs), biofilm, and tooth-destroying lactic acid. The host diet strongly influences the availability of multiple carbohydrates. Here, we showed that the RcrR transcription regulator plays a significant role in the regulation of biofilm formation and multiple sugar transportation. Further systematic evaluation of how RcrR regulates the transportation of various sugars and biofilm formation was also conducted. Notably, this study decrypts the physiological functions of RcrR as a potential target for the better prevention of dental caries.
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Assessment of Bond Integrity, Durability, and Degree of Conversion of a Calcium Fluoride Reinforced Dentin Adhesive. Polymers (Basel) 2021; 13:polym13152418. [PMID: 34372022 PMCID: PMC8347946 DOI: 10.3390/polym13152418] [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: 06/21/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 01/07/2023] Open
Abstract
Our study aimed to synthesize and compare the mechanical properties and dentin interaction of two adhesives; experimental adhesive (EA) and EA containing 5 wt.% calcium fluoride (CaF2) nano-crystals (CaF2 adhesive-CAFA). CaF2 nano-crystals were synthesized by reacting two solutions (containing calcium and fluoride) in a glass chamber using a heated air system. The EA was produced using a mix of monomers, photo-initiators, camphorquinone, and electron initiators. The synthesized CaF2 nano-crystals were centrifuged to guarantee that inside the adhesive there is homogenized dispersion of the filler particles. Their integration in the EA yielded two groups; Gp-1: EA (without CaF2, control) and Gp-2: (5 wt.% CaF2 containing adhesive, CAFA). Sixty teeth were prepared and set to form bonded specimens using the two adhesives. The CaF2 nano-crystals were irregularly shaped with an average particle size of 30–200 nm. The highest μTBS values were obtained for CAFA-non-thermocycled (NTC) samples (32.63 ± 3.15), followed by EA-NTC (31.80 ± 3.75) specimens. On thermocycling (TC), both adhesive groups presented lower μTBS values (CAFA-TC: 29.47 ± 3.33 and EA-TC: 24.04 ± 3.69). Hybrid layer (HL) formation and resin tags of varying depths were perceived for both adhesive groups. The EDX analysis demonstrated the presence of carbon (C), silica (Si), calcium (Ca), and fluoride (F) for CAFA group. Micro-Raman spectroscopy revealed distinct peaks for CaF2 nano-crystals. The CAFA group presented the greatest DC. The addition of CaF2 nano-crystals in the adhesive caused improved bond μTBS and DC. The incorporation also demonstrated suitable dentin interaction, depicted by appropriate HL and resin tag development.
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Athavale P, Khadka N, Roy S, Mukherjee P, Chandra Mohan D, Turton B(B, Sokal-Gutierrez K. Early Childhood Junk Food Consumption, Severe Dental Caries, and Undernutrition: A Mixed-Methods Study from Mumbai, India. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17228629. [PMID: 33233797 PMCID: PMC7699964 DOI: 10.3390/ijerph17228629] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/14/2020] [Accepted: 11/15/2020] [Indexed: 12/18/2022]
Abstract
In India, globalization has caused a nutrition transition from home-cooked foods to processed sugary snacks and drinks, contributing to increased early childhood caries (ECC). This mixed-methods study describes risk factors for ECC and associations with undernutrition in low-income communities in Mumbai. Interviews with mothers of 959 children, ages six-months through six-years, addressed maternal-child nutrition and oral health, and children received dental exams and anthropometric assessments. Focus groups with community health workers and mothers explored experiences and perceptions of oral health, nutrition, and ECC. Descriptive and logistic regression analyses of quantitative data, and content analysis of qualitative data were performed. Eighty percent of children lived 5 min from a junk-food store, over 50% consumed junk-food and sugary tea daily, 50% experienced ECC, 19% had severe deep tooth decay, 27% experienced mouth pain, and 56% experienced chronic and/or acute malnutrition. In children ages 3–6, each additional tooth with deep decay was associated with increased odds of undernutrition (Odds Ratio [OR] 1.10, Confidence Interval [CI] 1.02–1.21). Focus groups identified the junk-food environment, busy family life, and limited dental care as contributors to ECC. Policy interventions include limits on junk-food marketing and incorporating oral health services and counseling on junk-food/sugary drinks into maternal–child health programs.
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Affiliation(s)
- Priyanka Athavale
- School of Public Health, University of California, Berkeley, CA 94704, USA; (N.K.); (S.R.); (D.C.M.); (K.S.-G.)
- School of Medicine, University of California, San Francisco, CA 94143, USA
- Correspondence: ; Tel.: +1-(408)-647-0477
| | - Nehaa Khadka
- School of Public Health, University of California, Berkeley, CA 94704, USA; (N.K.); (S.R.); (D.C.M.); (K.S.-G.)
- Fielding School of Public Health, Department of Epidemiology, University of California, Los Angeles, CA 90095, USA
| | - Shampa Roy
- School of Public Health, University of California, Berkeley, CA 94704, USA; (N.K.); (S.R.); (D.C.M.); (K.S.-G.)
| | | | - Deepika Chandra Mohan
- School of Public Health, University of California, Berkeley, CA 94704, USA; (N.K.); (S.R.); (D.C.M.); (K.S.-G.)
| | | | - Karen Sokal-Gutierrez
- School of Public Health, University of California, Berkeley, CA 94704, USA; (N.K.); (S.R.); (D.C.M.); (K.S.-G.)
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Maslak EE, Onishchenko LF, Soboleva SY, Dmitrienko DS, Fursik DI. Clinical and economic analysis of caries prevention programs by mathematic modeling. Pediatr Dent 2020. [DOI: 10.33925/1683-3031-2020-20-3-205-209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Relevance. Underestimating the importance of economic analysis is the barrier to the implementation of cariesprevention programs.The aim is to study with use of mathematic modeling method the clinical and economic effectiveness of dental caries prevention programs provided for schoolchildren.Materials and methods. The method of mathematic modeling was used to evaluate the clinical and economic efficiency of the caries prevention programs (educational, fissure sealing, fluoride varnish). The cost of prevention program implementation and the expenses for caries treatment without prevention were calculated according to the rate of Volgograd territorial mandatory medical insurance Fund for 2018 year. The differences between the caries prevention program’s cost and the expenses needed for the treatment of “prevented caries” were considered as saving.Results. It was revealed that the Educational Dental Program for the first grade schoolchildren has short duration (2 years) of clinical-economic efficiency. The Continuous Educational Dental Program applied for 6 years by dental hygienists or dentists led to saving (per 100 children) of 99.5-115.0 or 84.0-99.6 thousand roubles respectively. The economic effect of The First Permanent Molar Fissure Sealing Program was revealed after 2 years only when The Program was implemented by dental hygienists. After 6 years of working with this Program the saving were 181.3 or 146.2 thousand roubles per 100 children depending on who implemented the Program, dental hygienists or dentists. The cost of Fluoride Varnish Program implementation was higher than the treatment of “prevented caries”. However, the number of “prevented caries” after fluoride varnish application is higher than after the implementation of the Educational Dental Programs. Moreover, fluoride varnish, in contrast to fissure sealing, prevents caries of smooth surfaces of permanent teeth. Conclusions. The method of mathematic modeling can be used for the development of the caries prevention programs in various regions considering the availability of personnel and financial resources, and for evaluation of the clinical and economic effectiveness of preventive programs implementation.
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Affiliation(s)
- E. E. Maslak
- Federal State Budgetary Educational Institution of Higher Education «Volgograd State Medical University» of the Ministry of Health of the Russian Federation
| | - L. F. Onishchenko
- Federal State Budgetary Educational Institution of Higher Education «Volgograd State Medical University» of the Ministry of Health of the Russian Federation
| | - S. Yu. Soboleva
- Federal State Budgetary Educational Institution of Higher Education «Volgograd State Medical University» of the Ministry of Health of the Russian Federation
| | - D. S. Dmitrienko
- Federal State Budgetary Educational Institution of Higher Education «Volgograd State Medical University» of the Ministry of Health of the Russian Federation
| | - D. I. Fursik
- Federal State Budgetary Educational Institution of Higher Education «Volgograd State Medical University» of the Ministry of Health of the Russian Federation
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