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International Journal of Oral Science Mar 2022Oral bacteria directly affect the disease status of dental caries and periodontal diseases. The dynamic oral microbiota cooperates with the host to reflect the... (Review)
Review
Oral bacteria directly affect the disease status of dental caries and periodontal diseases. The dynamic oral microbiota cooperates with the host to reflect the information and status of immunity and metabolism through two-way communication along the oral cavity and the systemic organs. The oral cavity is one of the most important interaction windows between the human body and the environment. The microenvironment at different sites in the oral cavity has different microbial compositions and is regulated by complex signaling, hosts, and external environmental factors. These processes may affect or reflect human health because certain health states seem to be related to the composition of oral bacteria, and the destruction of the microbial community is related to systemic diseases. In this review, we discussed emerging and exciting evidence of complex and important connections between the oral microbes and multiple human systemic diseases, and the possible contribution of the oral microorganisms to systemic diseases. This review aims to enhance the interest to oral microbes on the whole human body, and also improve clinician's understanding of the role of oral microbes in systemic diseases. Microbial research in dentistry potentially enhances our knowledge of the pathogenic mechanisms of oral diseases, and at the same time, continuous advances in this frontier field may lead to a tangible impact on human health.
Topics: Bacteria; Dental Caries; Humans; Microbiota; Mouth; Mouth Diseases; Periodontal Diseases
PubMed: 35236828
DOI: 10.1038/s41368-022-00163-7 -
Medicina (Kaunas, Lithuania) Oct 2019Scientific research in the medical field shows this constantly: health starts from the mouth. Having good oral health nowadays is not only aimed at tooth health, but as...
Scientific research in the medical field shows this constantly: health starts from the mouth. Having good oral health nowadays is not only aimed at tooth health, but as amply demonstrated in the literature, it is a starting point for the general health and well-being of our body. Retracing the latest scientific findings that demonstrate an interpolation between oral health, oral diseases, and systemic complications, literature support was brought to this manuscript. Oral health, as demonstrated, has potentially multi-organ systemic implications, and as the results of the recent literature demonstrate, these implications range from an insulin resistance, due to a periodontal disease, up to far more complex multi-organ systemic complications involving the cardiovascular system or even neurodegenerative pathology. Therefore, being able to improve oral health could have great systemic implications for the organism, for the prevention of pathologies, and therefore for society and for the quality of life in individuals.
Topics: History, 16th Century; History, Ancient; History, Medieval; Humans; Hygiene; Mouth Diseases; Oral Health; Quality of Life
PubMed: 31591341
DOI: 10.3390/medicina55100676 -
Seminars in Cancer Biology Nov 2022Despite decades of research, cancer continues to be a major global health concern. In recent years, the role played by microorganisms in the development and progression... (Review)
Review
Despite decades of research, cancer continues to be a major global health concern. In recent years, the role played by microorganisms in the development and progression of cancer has come under increased scrutiny. The aim of the present review is to highlight the main associations between members of the human oral microbiota and various cancers. The PubMed database was searched for available literature to outline the current state of understanding regarding the role of the oral microbiota and a variety of human cancers. Oral squamous cell carcinoma (OSCC) is associated with carriage of a number of oral bacteria (e.g., Porphyromonas gingivalis, Fusobacterium nucleatum, Streptococcus sp.), certain viruses (e.g., human papilloma virus, human herpes virus 8, herpes simplex virus 1 and Epstein-Barr virus) and yeast (Candida albicans). Moreover, members of the oral microbiota are associated with cancers of the esophagus, stomach, pancreas, colon/rectum and lung. Furthermore, the present review outlines a number of the carcinogenic mechanisms underlying the presented microbial associations with cancer. Such information may one day help clinicians to diagnose neoplastic diseases at earlier stages and prescribe treatments that take into account the possible microbial nature of carcinogenesis.
Topics: Humans; Mouth Neoplasms; Carcinoma, Squamous Cell; Epstein-Barr Virus Infections; Herpesvirus 4, Human; Microbiota; Carcinogenesis; Head and Neck Neoplasms
PubMed: 34743032
DOI: 10.1016/j.semcancer.2021.11.002 -
Respiratory Medicine 2021The oral cavity (mouth) has various microbial habitats, including, teeth, gingival sulcus, gingiva, tongue, inner cheek, hard palate, and soft palate. The human oral... (Review)
Review
The oral cavity (mouth) has various microbial habitats, including, teeth, gingival sulcus, gingiva, tongue, inner cheek, hard palate, and soft palate. The human oral cavity houses the second most diverse microbiome in the body harboring over 700 bacterial species. The fine-tuned equilibrium of the oral microbiome ecosystem maintains oral health. Oral dysbiosis caused by food habits and poor oral hygiene leads to various oral diseases such as periodontitis, caries, gingivitis, and oral cancer. Recent advances in technology have revealed the correlation between the oral microbiome and systemic diseases such as pulmonary diseases, cardiovascular diseases, rheumatoid arthritis, Alzheimer's disease, and other metabolic diseases. Since the oral cavity directly connects with the upper respiratory tract, the oral microbiome has easier access to the respiratory system compared to other organ systems. Direct aspiration of oral microflora in the respiratory system and oral dysbiosis-induced host immune reaction and inflammation are mainly responsible for various pulmonary complications. Numbers of literature have reported the correlation between oral diseases and pulmonary diseases, suggesting the possible role of the oral microbiome in respiratory diseases such as chronic obstructive pulmonary diseases, pneumonia, lung cancer, etc. This paper reviews the current evidence in establishing a link between the oral microbiome and pulmonary diseases. We also discuss future research directions focusing on the oral microbiome to unravel novel therapeutic approaches that could prevent or treat the various pulmonary complications.
Topics: Dysbiosis; Host Microbial Interactions; Humans; Lung Diseases; Lung Neoplasms; Microbiota; Mouth; Mouth Diseases; Oral Health; Pulmonary Disease, Chronic Obstructive
PubMed: 34049183
DOI: 10.1016/j.rmed.2021.106475 -
Journal of Reproductive Immunology Jun 2021The oral cavity contains the second most complex microbial population within the human body, with more than 700 bacterial organisms. Recent advances in Next Generation... (Review)
Review
The oral cavity contains the second most complex microbial population within the human body, with more than 700 bacterial organisms. Recent advances in Next Generation Sequencing technology have unraveled the complexities of the oral microbiome and provided valuable insights into its role in health and disease. The human oral microbiome varies dramatically during the different stages of life, including pregnancy. The total viable microbial counts in pregnant women are known to be higher compared to non-pregnant women, especially in the first trimester of pregnancy. A balanced oral microbiome is vital for a healthy pregnancy, as perturbations in the oral microbiome composition can contribute to pregnancy complications. On the other hand, physiological changes and differences in hormonal levels during pregnancy, increase susceptibility to various oral diseases such as gingivitis and periodontitis. A growing body of evidence supports the link between the composition of the oral microbiome and adverse pregnancy outcomes such as preterm birth, preeclampsia, low birth weight among others. This review aims to summarize the dynamics of oral microbiome during pregnancy and to discuss the relationship between a dysbiotic oral microbiome and pregnancy complications.
Topics: Dysbiosis; Female; Humans; Microbiota; Mouth Mucosa; Oral Health; Oral Hygiene; Periodontitis; Pregnancy; Pregnancy Complications
PubMed: 33676065
DOI: 10.1016/j.jri.2021.103293 -
Reviews in Medical Virology Jan 2022Initially, it was reported that coronavirus 2019 disease (Covid-19) affects respiratory, gastrointestinal and neurological systems, but the oral, olfactory and... (Review)
Review
Initially, it was reported that coronavirus 2019 disease (Covid-19) affects respiratory, gastrointestinal and neurological systems, but the oral, olfactory and integumentary systems are also involved. This review discusses various oral manifestations of Covid-19 reported in the literature along with possible underlying mechanisms. The reported manifestations include taste impairment, oral mucosal changes (petechiae, ulcers, plaque-like lesions, reactivation of herpes simplex virus 1(HSV1), geographical tongue and desquamative gingivitis) and dry mouth. The prominent location for mucosal lesions are tongue, palate and labial mucosa. The exact pathogenesis of these oral symptoms is not known. Angiotensin-converting enzyme 2 (ACE2) cell receptors are expressed in abundance on oral mucosa allowing severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) to infect them. Gustatory impairment along with olfactory changes is now listed as a symptom of Covid-19 by the World Health Organization, but further research is needed to confirm a link between reported additional oral symptoms and Covid-19. Dental professionals may encounter individuals with Covid-19 and be called upon to identify various oral manifestations of this disease.
Topics: Angiotensin-Converting Enzyme 2; COVID-19; Dysgeusia; Humans; Mouth Diseases; Mouth Mucosa; SARS-CoV-2; Taste Disorders; Xerostomia
PubMed: 34028129
DOI: 10.1002/rmv.2248 -
Nutrients Sep 2020Oral and periodontal diseases can determine severe functional, phonatory and aesthetic impairments and are the main cause of adult tooth loss. They are caused by some...
Oral and periodontal diseases can determine severe functional, phonatory and aesthetic impairments and are the main cause of adult tooth loss. They are caused by some specific bacteria that provoke an intense local inflammatory response and affect-with particular gravity-susceptible subjects, because of reasons related to genetics and lifestyles (e.g., smoking and home oral hygiene habits). They are more frequent in the disadvantaged segments of society and, in particular, in subjects who have difficulty accessing preventive services and dental care. Some systemic diseases, such as uncontrolled diabetes, can increase their risk of development and progression. Recently, in addition to the obvious considerations of severe alterations and impairments for oral health and well-being, it has been noted that periodontitis can cause changes in the whole organism. Numerous clinical and experimental studies have highlighted the presence of a strong association between periodontitis and some systemic diseases, in particular, cardiovascular diseases, diabetes, lung diseases and complications of pregnancy. The purpose of this editorial is to provide a current and thoughtful perspective on the relationship of diet and natural agents on oral, periodontal diseases, and chewing disorder preventions which may reflect good systemic conditions and related quality of life or to analyze indirect effects through the contribution of diet and nutrition to systemic health in order to obtain a modern diagnostic-therapeutic approach.
Topics: Diet; Diet, Healthy; Dietary Supplements; Humans; Mouth Diseases; Nutritional Status; Oral Health; Periodontal Diseases
PubMed: 32899964
DOI: 10.3390/nu12092724 -
Periodontology 2000 Jun 2020Diabetes affects one in 10 adults and periodontal disease affects four in 10 adults in the USA, and they are linked. Individuals with diabetes are more likely to suffer... (Review)
Review
Diabetes affects one in 10 adults and periodontal disease affects four in 10 adults in the USA, and they are linked. Individuals with diabetes are more likely to suffer from periodontal disease and periodontal disease affects glycemic control and complications of diabetes. The role of diabetes as a risk factor for periodontal disease and other oral conditions will be discussed in this review. The fact that type 2 diabetes, especially uncontrolled, is a risk factor for periodontal disease has long been recognized. However, the role of type 1 diabetes and gestational diabetes in periodontal risk has recently been described. Also, diabetes as a risk factor for tooth loss has more recently been described and the deleterious effects of tooth loss, especially edentulism, in comparing the diets of patients with diabetes is now fully appreciated. From longitudinal studies it is clear that diabetes often precedes periodontitis and, hence, may contribute to the causal pathway of periodontitis. Other oral manifestations of diabetes include increased risk of oral and nonoral (vaginal) fungal infections. In patients with diabetes there is often reduced salivary flow associated with diabetes medications and neuropathy affecting the salivary glands. This may lead to increased caries. Burning mouth, resulting from diabetes neuropathy, and taste impairment may also be seen. It has long been known that there is delayed wound healing in patients with diabetes, especially if uncontrolled. Hence, it is critical to achieve good glycemic control before carrying out surgical procedures or dental implant placement in patients with diabetes.
Topics: Adult; Dental Caries; Diabetes Mellitus, Type 2; Female; Humans; Periodontal Diseases; Periodontitis; Risk Factors; Tooth Loss
PubMed: 32385881
DOI: 10.1111/prd.12270 -
Journal of Clinical Gastroenterology Jan 2020Celiac disease is a common form of enteropathy with frequent extraintestinal manifestations (EIM). Misrecognition of these presentations may lead to significant delays... (Review)
Review
Celiac disease is a common form of enteropathy with frequent extraintestinal manifestations (EIM). Misrecognition of these presentations may lead to significant delays in diagnosis. Any organ may be involved, either through an immune/inflammatory phenomenon, or nutritional deficiencies. Some EIM, such as gluten ataxia, may be irreversible if left untreated, but most will improve with a gluten-free diet. Knowledge of the various EIM, as well as the associated conditions which do not improve on a gluten-free diet, will avoid delays in the diagnosis and management of celiac disease and associated manifestations.
Topics: Celiac Disease; Delayed Diagnosis; Diet, Gluten-Free; Eye Diseases; Gastrointestinal Diseases; Humans; Malnutrition; Mental Disorders; Mouth Diseases; Musculoskeletal Diseases; Nervous System Diseases; Skin Diseases; Symptom Assessment
PubMed: 31513026
DOI: 10.1097/MCG.0000000000001267 -
F1000Research 2020Oral squamous cell carcinoma (OSCC) is a commonly occurring head and neck cancer. It has a high prevalence in certain parts of the world, and is associated with a high... (Review)
Review
Oral squamous cell carcinoma (OSCC) is a commonly occurring head and neck cancer. It has a high prevalence in certain parts of the world, and is associated with a high mortality rate. In this review, we describe metastasis related to OSCC, and disorders that could lead to OSCC with common etiological factors. In addition, a brief account of the diagnosis of OSCC and role of salivary biomarkers in its early detection has also been highlighted. Google Scholar and PubMed search engines were searched with keywords including "oral squamous cell carcinoma", "OSCC", "oral cancer", "potentially malignant disorders in oral cavity", "etiological factors of OSCC", "diagnosis of OSCC", and "salivary biomarkers and OSCC" to gather the literature for this review. The review concludes that OSCC has the potential for regional as well as distant metastasis, and many potentially malignant diseases can transform into OSCC with the help of various etiological factors. Diagnosis of OSCC involves traditional biopsy, but salivary biomarkers could also be utilized for early recognition.
Topics: Biomarkers, Tumor; Carcinoma, Squamous Cell; Humans; Mouth Neoplasms; Neoplasm Metastasis
PubMed: 32399208
DOI: 10.12688/f1000research.22941.1