Articles tagged with Teeth
Researchers used new software to analyze fossilized tooth surfaces, revealing that early humans like Australopithecus africanus ate tougher leaves and Paranthropus robustus ate harder foods. The study also showed unexpected variability in the samples, suggesting both species relied on less preferred foods during periods of scarcity.
Researchers used a novel technique to study the diets of ancient humans, Australopithecus africanus and Paranthropus robustus. The analysis revealed significant overlap in their diets, with P. robustus consuming both hard and tough foods.
A study of 106 postmenopausal women found that alveolar bone loss is the strongest predictor of tooth loss in this population. The risk of tooth loss increases by 3 times for each millimeter of alveolar bone loss and 2.5 times for each millimeter of clinical attachment loss.
A recent study published in the Journal of Clinical Periodontology found that quitting smoking significantly improves gum health for smokers with chronic gum disease. Over a one-year period, one-fifth of the patients who quit smoking experienced improved gum health compared to those who continued to smoke.
Researchers found a sudden shift in plant type after humans arrived in Australia, leading to extinctions of large birds like Genyornis. The study used ancient wombat teeth and bird eggshells to analyze carbon isotopes, showing that human-induced vegetation change was the best explanation for the ecological transition.
Researchers found that individuals over 80 with active root caries had twice the odds of cardiac arrhythmias. The study suggests that oral health issues in older adults can be a marker of general physical decline and may require serious attention.
A study by Newcastle University found that only one-third of gum disease patients followed dentist advice to improve their brushing habits, despite perceiving themselves as more compliant. The research highlights the need for dentists to re-educate their patients on proper oral hygiene practices.
A recent study by the University of Toronto found that nearly one in five teenagers in Ontario have evidence of tooth damage. The study also revealed that youth with cavities are more likely to experience tooth injuries.
A new study by University at Buffalo researchers found that panoramic X-rays have limited value and can be used selectively in some cases. The study, which evaluated 1,000 panoramic X-rays, revealed that lesions in sinus cavities, soft tissue of the neck, and upper jaw bone were not always picked up on full-mouth-series X-rays.
Forensic bite-mark matching has been criticized due to its fallibility and distortion problems. A new approach using 3D imaging has shown promise in improving accuracy, but with a 15% chance of incorrect matches. The technology could be useful in courtrooms for illustrating the likelihood of a match.
Dr. Kato's research focuses on practical clinical issues affecting the general public, including tooth-grinding which can cause sensitivity and pain. He is one of 15 recipients to receive the IADR Young Investigator Award annually, recognized for his basic research in dental disciplines.
Researchers studied mountain gorillas' diets to understand early human food adaptations, finding increased meat consumption led to genetic changes allowing for fatty foods without heart disease. The study suggests that humans have evolved to eat a 'mushy' diet and are not equipped to cope with substantial foods.
The Caries Assessment and Risk Evaluation (CARE) test measures saliva's oligosaccharides to predict future cavity history with 98% confidence. The test identifies children at risk, allowing for preventive measures to be taken.
Researchers used structured light imaging to produce a detailed 3D picture of tooth decay, allowing dentists to study the process in real-time. This technique has the potential to reveal early stages of decay and enable preventative measures.
Researchers found that Neanderthals experienced periods of starvation and nutritional stress, but to a lesser extent than modern Inuit who used more advanced technology. Tiny grooves in tooth enamel served as markers of these episodes.
Scientists successfully isolated human periodontal ligament stem cells, which have shown tremendous potential to regenerate the periodontal ligament and cementum. The stem cells were able to form dense tissue in rodent models, with eight out of 13 transplants producing a mixture of cementum and periodontal ligament.
Researchers at the University of Rochester Medical Center have discovered that S. mutans, the primary bacterium responsible for tooth decay, has a vulnerable gene called fabM that enables it to withstand acidic environments. By targeting this gene, scientists may be able to develop new compounds to kill S. mutans and reduce cavities.
A study by Newcastle University found that adult smokers are more likely to experience tooth loss. Adults from disadvantaged social backgrounds also suffered from oral health problems. The research suggests that public health interventions should target adults as well, in addition to children.
Researchers have made significant breakthroughs in growing replacement teeth and dental tissues using tissue engineering techniques. The development of novel regenerative therapies could restore partial tooth tissue loss and minimize restoration failure with traditional dental materials.
Research from Newcastle University and Australia finds young adults worried about their teeth due to celebrity beauty standards. The study, published in Community Dentistry and Oral Epidemiology, reveals younger generations are more likely to complain about dental problems than older adults.
Researchers have found that dental pulp cells can provide support and survival for nerve cells affected in Parkinson's disease, potentially leading to a new cell-based therapy. The study suggests that these cells produce beneficial 'neurotrophic' factors, promoting nerve cell survival.
Tobacco smoking weakens the body's defense mechanism, increasing the development of periodontitis. Quitting helps to improve oral health through increased brushing and flossing, which can also prevent periodontal diseases.
University of Warwick physicists have found that phosphorus in teeth can become a superconductor when subjected to immense pressure. They also propose a method for preserving and using this structure, which could enable the creation of a 'superconducting switch'.
Researchers link tooth loss to subclinical atherosclerosis and increased carotid plaque buildup. The study suggests that chronic infection or inflammation of the gums may contribute to tooth loss.
Researchers have developed a DNA-based test to accurately distinguish great white sharks from other species, even when only dried fins or meat are available. This new test will help conservationists and fisheries managers better regulate and protect great whites, a species that has declined by up to 79% in the northwestern Atlantic.
The study found that uninsured patients and Medicaid recipients account for a significant proportion of emergency department visits due to tooth pain or injury. Despite receiving antibiotics or pain medication, these patients often lack follow-up dental care.
A recent study found that increasing brushing time and pressure beyond a certain point does not improve plaque removal, but may increase the risk of oral health issues. The researchers emphasize the importance of proper technique and accurate pressure application to avoid harm.
Researchers at NIST have invented composites that can promote re-growth of natural tooth structures efficiently. These bioactive, biocompatible materials can be used to stimulate the repair of defective teeth, minimizing decay under orthodontic braces and potentially in root canal therapy.
Researchers have identified a new source of stem cells in human teeth, known as SHED (Stem cells from Human Exfoliated Deciduous Teeth), which can grow rapidly in culture and differentiate into specialized cells. This discovery may lead to breakthroughs in tooth repair, bone regeneration, and neural injury treatment.
Scientists have discovered fossilized evidence of a dinosaur, Majungatholus, that regularly consumed members of its own species. The discovery expands our understanding of dinosaur relationships and provides insight into the animal kingdom's common practice of cannibalism.
A new laser-based technique can detect developing cavities in teeth, revealing defects at very early stages of development. This photo-thermal method avoids the need for heavy lead aprons to protect patients from hazardous X-rays, making it a promising tool for preventive treatment.
The main cause of tooth discoloration lies at the surface of enamel, where red wine, coffee and tea stain teeth. Hydrogen peroxide-based whitening agents target deeper discoloration by forming radical intermediates that break down into water and oxygen.
A new study by the American Heart Association has found a significant link between tooth loss and an increased risk of ischemic stroke. Men with fewer than 25 teeth had a 57% higher risk of ischemic stroke compared to those with 25 or more teeth, suggesting that infection plays a role in stroke and heart disease.
A UMass anthropologist has investigated the dental development of an extinct primate species, revealing that these early primates developed teeth rapidly to adapt to their environment. The study found that these ancient lemurs had highly developed teeth by birth, allowing them to survive on solid food shortly after birth.
Early Childhood Caries (ECC) is a preventable condition characterized by decay of primary teeth, affecting underserved and poor communities. UCSF researchers found a significant association between ECC and low cariogenic bacterial levels, lack of dental insurance, and family income.
Researchers found that long-stemmed barbells increase the risk of gum recession in 35% of subjects with pierced tongues. Additionally, 47% of young adults wearing barbells for four or more years had chipped teeth due to habitual biting.
New study suggests that coffee's antibacterial properties, particularly trigonelline, may reduce S. mutans colonization and prevent tooth decay. Roasted coffee samples showed higher inhibitory activity than green unroasted beans.
The new Northwest/Alaska Center for Research to Reduce Oral Health Disparities will investigate disparities in oral health, focusing on children from poor families and minority groups. Researchers aim to prevent cavities through xylitol, culturally appropriate approaches to dental fear, and effective care translation.
A study published in the American Journal of Public Health found that dental sealants can significantly reduce dental costs for children on Medicaid who are at high risk of dental problems. Researchers analyzed data from 15,438 North Carolina children and found that sealant treatments led to lower expenses for Medicaid in 1990 dollars,...
The UCSF Center for Addressing Disparities in Children's Oral Health will investigate causes and preventive measures for early childhood caries, focusing on racial and ethnic minorities. The center aims to improve oral health among young children through data-driven projects and interventions.
Researchers have developed a dental composite that can remineralize small cavities and prevent demineralization. The material, containing amorphous calcium phosphate, has potential applications in orthodontic adhesives, dental fillings, root canal therapy, and bone repair.
Researchers in New Zealand tracked the health of 1,000 children from birth to age 26, revealing that attachment loss, pockets, and bleeding gums are common signs of periodontal disease. The study emphasizes the need for regular dental screenings and proper oral hygiene practices to prevent chronic periodontal disease.
A study of 705 individuals found that cigar and pipe smokers have nearly three times the prevalence of moderate to severe periodontitis as non-smokers, with an average of four missing teeth. Smoking cessation efforts are crucial for improving periodontal health and preventing tooth loss.
A case report found that oral piercing can cause localized gingival recession, increasing the risk of tooth decay and periodontal disease. Researchers warn of other complications such as infection, swelling, and metal hypersensitivity.
Researchers found that adults with sufficient calcium consumption have significantly lower rates of periodontal disease. The study suggests that calcium plays a crucial role in building density in the alveolar bone that supports the teeth, helping to prevent bacterial onslaughts that can lead to infection and tooth loss.
Studies found that medications like clonidine and propranolol can significantly increase the risk of tooth decay in individuals with dry mouth. The research suggests that antihistamines, antidepressants, and other medications can alter saliva composition, making it less effective at neutralizing acids and remineralizing teeth.
The cavity rate among children in Rochester is on the rise slightly, with an average of three cavities per 10-year-old child. The decline in cavity rates that began in the 1970s and 1980s has flattened, and researchers warn that complacency may be contributing to the increase.
Researchers at the Monell Chemical Senses Center have narrowed the search for a gene responsible for sweet preference in mice to a specific area of chromosome 4. This region is thought to be a likely candidate for a 'sweet taste gene' that affects both mouse and human perception of sweetness.
A University of Florida researcher has developed a genetically altered bacteria strain, called an effector strain, that can permanently prevent tooth decay. The new strain, constructed from the naturally occurring bacterium Streptococcus mutans, breaks down food sugars and thrives on high-sugar diets.
A team of scientists has discovered the gene responsible for Papillon-Lefevre syndrome, a rare condition characterized by thick, cracked skin and premature tooth loss. The study identified mutations in the cathepsin C gene, which may help understand the development of periodontal disease.
The University of North Carolina at Chapel Hill is launching a unique project to reduce tooth decay among the state's youngest children by applying fluoride varnish on their teeth starting from 9 months. Despite improvements in dental health over the past three decades, 20-25% of young children still suffer from severe tooth decay.
Dinosaur tooth enamel holds secrets to ancient climate conditions, with new analysis suggesting middle latitudes may not have been warmer than today. Data from Madagascar indicates sub-tropical latitudes were warmer and more arid during the Late Cretaceous era.
UCSF researchers are using powerful microscopes to observe the bonding process between tooth enamel and dentin. By analyzing structures as small as two micrometers, they aim to develop methods for creating tighter, more permanent bonds between teeth and plastic-based fillings.
Researchers found a strong relationship between bone loss, gum disease, and tooth loss in postmenopausal women. The study suggests that women with osteoporosis may be at higher risk of developing periodontal disease.
The study found that fluoride protects smooth surfaces of teeth, while dental sealants fill pits and fissures to prevent decay. Sealants are recommended for children, adolescents, and adults who have experienced tooth decay in these areas.
Researchers estimate Tyrannosaurus Rex could exert a biting force of up to 3,011 pounds on its prey, with 58 definite T-rex bite marks found on a Triceratops pelvis. The powerful dinosaur's teeth were as strong as those of an alligator, suggesting it could have struggled with its prey.