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Brazilian Oral Research May 2019The aim of this study was to determine the occurrence of gingivitis and calculus and their predictors in a population of adults in Brazil. A representative sample of 758...
The aim of this study was to determine the occurrence of gingivitis and calculus and their predictors in a population of adults in Brazil. A representative sample of 758 adults from 35 to 59 years of age from Porto Alegre city was examined. A structured questionnaire was applied. The Gingival Bleeding Index and the presence of calculus were measured at 4 sites/tooth. Multivariable logistic models were fitted to determine the predictors for gingival bleeding at >20% of sites. Overall, 96.5% (95% confidence interval [CI]=95.1-98.0) of individuals had ≥ 1 bleeding site. The mean percentages of sites with gingivitis and calculus were 26.1% and 44.6%, respectively. The odds of gingivitis decreased by ∼45% for individuals ≥40 years old compared to younger adults. Individuals that never performed interproximal cleaning and non-whites had an approximately two times higher chance of gingivitis. Smokers had lower chances of gingivitis than never-smokers (odds ratio=0.40; 95% CI=0.24-0.68). Higher numbers of missing teeth were associated with higher chances of gingivitis. The percentage of calculus was significantly associated with skin color, education, proximal cleaning, smoking exposure, dental visits, and tooth loss. It can be concluded that the occurrence of gingivitis and calculus was high in this Brazilian population, and it was associated with age, skin color, education, self-reported proximal cleaning, smoking, dental care, and tooth loss.
Topics: Adult; Age Distribution; Brazil; Cross-Sectional Studies; Dental Calculus; Female; Gingival Hemorrhage; Gingivitis; Humans; Linear Models; Male; Middle Aged; Periodontal Index; Prevalence; Risk Factors; Sex Distribution; Smoking; Socioeconomic Factors; Toothbrushing
PubMed: 31141035
DOI: 10.1590/1807-3107bor-2019.vol33.0036 -
Oral Surgery, Oral Medicine, Oral... Sep 2023To determine if oral hygiene is associated with infective endocarditis (IE) among those at moderate risk for IE.
OBJECTIVE
To determine if oral hygiene is associated with infective endocarditis (IE) among those at moderate risk for IE.
STUDY DESIGN
This is a case control study of oral hygiene among hospitalized patients with IE (cases) and outpatients with heart valve disease but without IE (controls). The primary outcome was the mean dental calculus index. Secondary outcomes included other measures of oral hygiene and periodontal disease (e.g., dental plaque, gingivitis) and categorization of blood culture bacterial species in case participants.
RESULTS
The 62 case participants had 53% greater mean dental calculus index than the 119 control participants (0.84, 0.55, respectively; difference = 0.29, 95% CI: 0.11, 0.48; P = .002) and 26% greater mean dental plaque index (0.88, 0.70, respectively; difference = 0.18, 95% CI: 0.01.0.36; P = .043). Overall, cases reported fewer dentist and dental hygiene visits (P = .013) and fewer dental visits in the 12 weeks before enrollment than controls (P = .007). Common oral bacteria were identified from blood cultures in 27 of 62 cases (44%).
CONCLUSIONS
These data provide evidence to support and strengthen current American Heart Association guidance that those at risk for IE can reduce potential sources of IE-related bacteremia by maintaining optimal oral health through regular professional dental care and oral hygiene procedures.
Topics: Humans; Oral Hygiene; Dental Calculus; Case-Control Studies; Endocarditis, Bacterial; Endocarditis
PubMed: 37085335
DOI: 10.1016/j.oooo.2023.02.020 -
Quaternary International : the Journal... Apr 2023The field of dental calculus research has exploded in recent years, predominantly due to the multitude of studies related to human genomes and oral pathogens. Despite...
The field of dental calculus research has exploded in recent years, predominantly due to the multitude of studies related to human genomes and oral pathogens. Despite having a subset of these studies devoted to non-human primates, little progress has been made in the distribution of oral pathogens across domestic and wild animal populations. This overlooked avenue of research is particularly important at present when many animal populations with the potentiality for zoonotic transmission continue to reside in close proximity to human groups due to reasons such as deforestation and climatic impacts on resource availability. Here, we analyze all previously available published oral microbiome data recovered from the skeletal remains of animals, all of which belong to the Mammalia class. Our genus level results emphasize the tremendous diversity of oral ecologies across mammals in spite of the clustering based primarily on host species. We also discuss the caveats and flaws in analyzing ancient animal oral microbiomes at the species level of classification. Lastly, we assess the benefits, challenges, and gaps in the current knowledge of dental calculus research within animals and postulate the future of the field as a whole.
PubMed: 37559969
DOI: 10.1016/j.quaint.2021.06.012 -
British Dental Journal Nov 2020During the last 50 years, an increasing number of toothpastes have been marketed that include pyrophosphates as anti-tartar (calculus) agents. Pyrophosphates are...
During the last 50 years, an increasing number of toothpastes have been marketed that include pyrophosphates as anti-tartar (calculus) agents. Pyrophosphates are chelating agents with low toxicity and a broad range of applications, such as food additives and in industrial applications. Like other chelating agents, the prime function is to combine with metal elements and, in toothpastes, to inhibit calcium phosphate deposits in the form of dental calculus. It is well established that pyrophosphates inhibit crystal growth of hydroxyapatite in bones and teeth, and theoretically may negatively affect the demineralisation-remineralisation equilibrium at the tooth surface. Surprisingly, little clinical research has been carried out to assess if the caries protection provided by fluoride toothpaste is compromised by the inclusion of pyrophosphates and the existing evidence is inconsistent. In the absence of more clinical research, it is suggested that children should not use pyrophosphate-containing toothpastes under 12 years of age.
Topics: Cariostatic Agents; Child; Dental Caries; Diphosphates; Fluorides; Humans; Retrospective Studies; Toothpastes
PubMed: 33247264
DOI: 10.1038/s41415-020-2346-4 -
Research in Veterinary Science Aug 2016The predominant diet fed to captive carnivores in North America consists of ground meat formulated to provide full nutritional requirements. However, this ground meat...
The predominant diet fed to captive carnivores in North America consists of ground meat formulated to provide full nutritional requirements. However, this ground meat diet completely lacks the mechanical properties (i.e., toughness and hardness) of the foods these animals would consume in the wild. The goal of this study is to evaluate the effect of captivity on oral health by comparing the prevalence of periodontal disease and dental calculus accumulation in wild and captive lions and tigers (Panthera leo and Panthera tigris), and to also correlate oral health with cranial morphology in these specimens. To achieve this, 34 adult lion and 29 adult tiger skulls were scored for the presence and extent of dental calculus and periodontal disease. These oral health scores were also compared to cranial deformations examined in a previous study. We found that the occurrence and severity of calculus buildup and periodontal disease was significantly higher in captive felids compared to their wild counterparts. Further, higher calculus accumulation occurred on the posterior teeth when compared to the anterior teeth, while an opposite trend for periodontal disease was observed. We also found a significant correlation between oral health and cranial morphology of lions and tigers. The results suggest that food mechanical properties are significant factors contributing to oral health in felids.
Topics: Animals; Animals, Zoo; Dental Calculus; Diet; Lions; Oral Health; Periodontal Diseases; Tigers
PubMed: 27473998
DOI: 10.1016/j.rvsc.2016.06.009 -
Research in Veterinary Science Jul 2024Periodontosis is the most common clinical disease in adult dogs, which is mainly caused by plaque accumulation and seriously endangers the oral health of dogs and even...
Periodontosis is the most common clinical disease in adult dogs, which is mainly caused by plaque accumulation and seriously endangers the oral health of dogs and even cause kidney, myocardial, and liver problems in severe cases. The aim of this study was to determine the clinical efficacy of dental chew (Cature Brushing Treats product) with mechanical and chemical properties in beagles. The dogs in the experimental group were fed with a dental chew twice a day after meals; The control group had no treatment. Dental plaque was evaluated on the 14th day and 29th day, respectively. The concentration of volatile sulfur compounds (VSC) in the breath and dental calculus were also evaluated on the 29th day. The results showed that there was no significant difference in the indexes of dental plaque on the 14th day. While they had significantly reduced accumulation of plaque (37.63%), calculus (37.61%), and VSC concentration (81.08%) compared to when receiving no chew on the 29th day.
Topics: Animals; Dogs; Halitosis; Dental Plaque; Dental Calculus; Dog Diseases; Male; Female; Sulfur Compounds
PubMed: 38759349
DOI: 10.1016/j.rvsc.2024.105304 -
Journal of Periodontology Jun 2022Periodontitis is an inflammatory disease initiated by dental deposits. Microorganisms in the dental biofilm induce cell death in epithelial cells, contributing to the...
Cytotoxic effects of dental calculus particles and freeze-dried Aggregatibacter actinomycetemcomitans and Fusobacterium nucleatum on HSC-2 oral epithelial cells and THP-1 macrophages.
BACKGROUND
Periodontitis is an inflammatory disease initiated by dental deposits. Microorganisms in the dental biofilm induce cell death in epithelial cells, contributing to the breakdown of epithelial barrier function. Recently, dental calculus has also been implicated in pyroptotic cell death in oral epithelium. We analyzed the cytotoxic effects of dental calculus and freeze-dried periodontopathic bacteria on oral epithelial cells and macrophages.
METHODS
HSC-2 (human oral squamous carcinoma cells) and phorbol 12-myristate 13-acetate-differentiated THP-1 macrophages were exposed to dental calculus or one of two species of freeze-dried bacterium, Aggregatibacter actinomycetemcomitans and Fusobacterium nucleatum. Following incubation for 24 hours, we measured cytotoxicity via lactate dehydrogenase release. Cells were then incubated with glyburide, an NLRP3 inflammasome inhibitor, to assess the potential role of pyroptosis. We also conducted a permeability assay to analyze the effects on epithelial barrier function.
RESULTS
Dental calculus induced dose-dependent cell death in HSC-2 cells, whereas cell death induced by freeze-dried bacteria was insignificant. Conversely, freeze-dried bacteria induced more cell death than dental calculus in THP-1 macrophages. Cell death induced by dental calculus but not by freeze-dried bacteria was inhibited by glyburide, indicating that these are different types of cell death. In the permeability assays, dental calculus but not freeze-dried bacteria attenuated the barrier function of HSC-2 cell monolayers.
CONCLUSION
Due to the low sensitivity of HSC-2 cells to microbial cytotoxicity, dental calculus had stronger cytotoxic effects on HSC-2 cell monolayers than freeze-dried A. actinomycetemcomitans and F. nucleatum, suggesting that it plays a critical role in the breakdown of crevicular/pocket epithelium integrity.
Topics: Aggregatibacter actinomycetemcomitans; Dental Calculus; Epithelial Cells; Fusobacterium nucleatum; Glyburide; Humans; Macrophages; Porphyromonas gingivalis
PubMed: 34486125
DOI: 10.1002/JPER.21-0196 -
Quaternary International : the Journal... Apr 2023The study of ancient human dental calculus (mineralized dental plaque, also known as tartar) is becoming increasingly important in osteoarchaeology, human palaeoecology...
The study of ancient human dental calculus (mineralized dental plaque, also known as tartar) is becoming increasingly important in osteoarchaeology, human palaeoecology and environmental archaeology. Microremains of different origin (e.g. starch granules, pollen, phytoliths, feather barbules) as well as biomolecules and chemical compounds retrieved from its mineral matrix may represent an important link between past humans and their physical, biological and social environment, but they are rarely fully linked to the evidence from skeletal remains. This paper critically reviews the lines of evidence retrieved from dental calculus in relation to osteoarchaeological parameters, employing macroscopic, microscopic and biomolecular approaches, assessing synergy potential and limitations. The scope of this paper is also to contribute to the building of a much needed theoretical framework in this emerging subfield.
PubMed: 37089908
DOI: 10.1016/j.quaint.2022.03.003 -
Scientific Reports Jun 2018Dental calculus (calcified dental plaque) is prevalent in archaeological skeletal collections and is a rich source of oral microbiome and host-derived ancient...
Dental calculus (calcified dental plaque) is prevalent in archaeological skeletal collections and is a rich source of oral microbiome and host-derived ancient biomolecules. Recently, it has been proposed that dental calculus may provide a more robust environment for DNA preservation than other skeletal remains, but this has not been systematically tested. In this study, shotgun-sequenced data from paired dental calculus and dentin samples from 48 globally distributed individuals are compared using a metagenomic approach. Overall, we find DNA from dental calculus is consistently more abundant and less contaminated than DNA from dentin. The majority of DNA in dental calculus is microbial and originates from the oral microbiome; however, a small but consistent proportion of DNA (mean 0.08 ± 0.08%, range 0.007-0.47%) derives from the host genome. Host DNA content within dentin is variable (mean 13.70 ± 18.62%, range 0.003-70.14%), and for a subset of dentin samples (15.21%), oral bacteria contribute > 20% of total DNA. Human DNA in dental calculus is highly fragmented, and is consistently shorter than both microbial DNA in dental calculus and human DNA in paired dentin samples. Finally, we find that microbial DNA fragmentation patterns are associated with guanine-cytosine (GC) content, but not aspects of cellular structure.
Topics: Bacteria; DNA, Bacterial; Dental Calculus; Dentin; Humans; Metagenomics; Microbiota; Preservation, Biological
PubMed: 29959351
DOI: 10.1038/s41598-018-28091-9 -
Molecular Biology and Evolution Dec 2022Host-associated microbiomes are essential for a multitude of biological processes. Placed at the contact zone between external and internal environments, the...
Host-associated microbiomes are essential for a multitude of biological processes. Placed at the contact zone between external and internal environments, the little-studied oral microbiome has important roles in host physiology and health. Here, we investigate the roles of host evolutionary relationships and ecology in shaping the oral microbiome in three closely related gorilla subspecies (mountain, Grauer's, and western lowland gorillas) using shotgun metagenomics of 46 museum-preserved dental calculus samples. We find that the oral microbiomes of mountain gorillas are functionally and taxonomically distinct from the other two subspecies, despite close evolutionary relationships and geographic proximity with Grauer's gorillas. Grauer's gorillas show intermediate bacterial taxonomic and functional, and dietary profiles. Altitudinal differences in gorilla subspecies ranges appear to explain these patterns, suggesting a close connection between dental calculus microbiomes and the environment, likely mediated through diet. This is further supported by the presence of gorilla subspecies-specific phyllosphere/rhizosphere taxa in the oral microbiome. Mountain gorillas show a high abundance of nitrate-reducing oral taxa, which may promote adaptation to a high-altitude lifestyle by modulating blood pressure. Our results suggest that ecology, rather than evolutionary relationships and geographic distribution, shape the oral microbiome in these closely related species.
Topics: Animals; Gorilla gorilla; Phylogeny; Dental Calculus; Hominidae; Microbiota
PubMed: 36472532
DOI: 10.1093/molbev/msac263