Researchers used finite element analysis to determine the forces and stresses involved in chewing food, contradicting previous classical analyses. The study suggests that Australopithecus africanus may have eaten larger hard objects, such as nuts, due to their fracture properties rather than wear patterns.
Researchers have identified a network of genes that control tooth number and patterning in cichlids, shedding light on the evolutionary origins of teeth. This discovery has significant implications for understanding tooth development and regeneration, potentially leading to new treatments for dental diseases.
Researchers have found a common genetic circuit controlling the formation of teeth in both jaws and throats of vertebrates. This discovery suggests that a core set of genes governs tooth development, regardless of location, and may also be involved in other patterned structures like hair and feathers.
Researchers used computer simulation to study the jaw structure of Australopithecus africanus, finding it ideal for cracking hard objects. The findings suggest that early humans adapted their diet to changing food sources by using their powerful jaws.
A recent study published in Photochemical & Photobiological Sciences found that UV light-enhanced tooth bleaching causes significant damage to skin and eyes, with fair-skinned individuals at greater risk. Additionally, the treatment was also found to exacerbate existing dental issues, such as exposed grooves on teeth.
The Lancet's Editorial emphasizes the importance of oral health prevention in reducing dental decay and its consequences. Daily use of fluoride is identified as a cost-effective approach to prevent tooth decay, especially in low- and middle-income countries where access to dentists is limited.
Archaeologists discovered starch grains on ancient human teeth in Peru, revealing the earliest consumption of beans and pacay. The findings suggest that New World people were committed farmers earlier than thought, dating back over 2,000 years.
A study published in the Academy of General Dentistry journal found that brewed tea has a lower erosive effect on teeth compared to soft drinks and acidic juices. The study suggests that drinking brewed tea can help prevent tooth erosion, which can wear away the enamel and lead to irreversible damage.
The National Institutes of Health has awarded Eastman Dental Center's Hyun Koo $1.6 million to continue his work on preventing dental caries by disrupting bacterial biofilm formation. Koo's team has discovered compounds in cranberry and red wine grapes that may reduce the ability of bacteria to form plaque and cause cavities.
Researchers from the University of Pittsburgh School of Dental Medicine have identified a series of genetic mutations associated with significant risk for cleft palate and other dental abnormalities. The study, published in Genetics in Medicine, analyzed DNA sequences from over 500 individuals and found more than a dozen gene mutations...
Researchers in India developed an X-ray image analysis technique that detects the early stages of tooth decay by analyzing X-ray wavelengths. This method could help save affected teeth and prevent tooth loss.
Scientists discovered a new Prevotella species in the mouth, which could help understand oral diseases. The finding confirms that oral bacteria can invade tissues and individual cells, paving the way for new prevention measures and treatments.
The discovery of tiny fossilized teeth from India pushes the primate timeline back by almost 10 million years, revealing a new genus and species of anthropoid primates. The findings suggest these early primates lived on a fruit and insect diet and were no larger than modern dwarf lemurs.
A new study shows that giving children four xylitol gummy bears three times a day reduces harmful bacteria in their plaque after six weeks. The findings suggest that a clinical trial to develop a gummy-based caries prevention program is feasible.
Nearly 20 million teeth are extracted annually, affecting patients' psychological well-being. Dr. Kiyak's course discusses ways to cope with tooth loss, including reviewing replacement options and testimonials from others who have undergone similar procedures. A great smile can boost self-esteem, confidence, and overall health.
A recent clinical trial found that xylitol syrup administered daily to toddlers from 6-15 months old significantly reduced tooth decay. The study showed nearly 76% of children in the xylitol group were caries-free, compared to 48% in the control group.
Primary care physician dental referrals increased access to dentists for children with tooth decay, but utilization remained low. Factors such as child age, general dentist availability, and rural location influenced referral effectiveness.
Researchers have developed a novel hydrogel system using multidomain peptides as a biomimetic scaffold, enabling the directed differentiation and function of dental stem cells for targeted dentin-pulp complex regeneration. The material provides high control over nanofiber architecture and better chemical functionality.
A study of 206 pregnant women found that mothers with low vitamin D levels had children more likely to develop early childhood tooth decay, while those with adequate levels had children with fewer enamel defects. Vitamin D consumption and prenatal use also influenced the risk.
A recent study published in Globalization and Health reveals that fluoride toothpaste is prohibitively expensive for the world's poorest populations. The researchers found that as per capita income decreased, the proportion of income needed to purchase a year's supply of toothpaste increased, with the poorest being hardest hit.
A study of 1,956 pre-schoolers found that tooth grinding during sleep was associated with worse pre-school adjustment, including social withdrawal and behavioral issues. Parents' reports of tooth grinding may be a sensitive indicator of bruxism in young children.
A study of 290 dental patients found bacteria in the blood after tooth brushing and extractions, but with lower incidence than expected. The researchers suggest that good oral hygiene can reduce the risk of heart valve infection by reducing gingival disease and bacterial species associated with IE.
A nationwide study of 2,635 women found a significant link between pregnancy and tooth loss, with women having more children being more prone to missing teeth. The study suggests that biological and behavioral changes during pregnancy and childbirth may contribute to tooth loss.
Researchers found that Paranthropus boisei's teeth showed little pitting indicative of eating hard foods, suggesting a more general diet than previously thought. This challenges the idea that their anatomy was specialized for a specific diet.
Researchers have found that the ancient human 'Nutcracker Man' did not eat nuts, contrary to previous assumptions. The study used microscopy and fractal analysis to examine marks on the teeth of Paranthropus boisei, suggesting that dietary preferences were based on scarcity rather than a regular diet.
A 40,000-year-old tooth reveals direct evidence of Neanderthal movement over lifetimes. The analysis of strontium isotope ratios in the enamel indicates that the individual lived in a different location than where the tooth was found.
The Hall Technique, a simple method of filling teeth with preformed metal crowns, has been shown to be effective in slowing or stopping tooth decay. Children who received the Hall Technique experienced significant improvement in their dental health, including reduced pain and abscesses compared to traditional 'drill and fill' methods.
A study published in the Journal of the American Dental Association found that patients were more satisfied with their own smiles than dentists, rating them an average 59.1 on a 100-point scale. The researchers suggest that this disparity may be due to differences in perception and assessment methods.
A recent survey found that nearly half of respondents would choose an endodontist for their root canal procedure. The American Association of Endodontists reports that endodontists perform an average of 25 root canals per week, significantly more than general dentists who perform about two a week.
Nigersaurus taqueti is a 110-million-year-old plant-eating dinosaur with a unique skull structure, featuring hundreds of needle-shaped teeth and a broad, straight-edged muzzle. Its distinctive anatomy allowed it to efficiently crop plants near the ground, making it an unusual example among sauropods.
A study published in JADA found that tooth loss is linked to an increased risk of developing dementia. Researchers proposed several possible reasons for the association, including periodontal disease and early-life nutritional deficiencies.
Researchers at the University of Helsinki discovered that a weak inhibitory cascade in mouse molars may cause the last molar to develop in humans. They developed a mathematical model predicting tooth proportions and numbers across various species, including humans.
Consuming acidic foods and beverages can lead to tooth erosion, causing decay and damage to dental enamel. Dr. Bartlett advises patients to wait at least 20 minutes before brushing after eating or drinking an acidic food or beverage, and to minimize snacking throughout the day.
Severe human bite wounds are 12 times more common in men, with most injuries occurring during brawls on weekends or public holidays. Eighty-six percent of cases involved alcohol, and 65% of facial injuries were to the ear.
New nanocomposites may mean more durable tooth fillings, according to scientists at NIST. The researchers' technique solves a problem with standard composite resin fillings by producing stronger and more effective restorations.
A NYU College of Dentistry research team analyzed caries and periodontal disease rates in over 1,500 immigrants from various countries. The study revealed significant ethnic differences, with Puerto Ricans, Haitians, and Indians more likely to suffer from periodontal disease, while Hispanics were more prone to dental caries.
The ForsythKids program provides elementary school children with oral health education, dental exams, cleanings, and preventive care. After two rounds of treatment, there was virtually no new tooth decay among enrolled children. The program has already met and exceeded Healthy People 2010 goals in just three years.
A recent study by Alexander Chernev reveals that consumers perceive specialized products to be superior on a single attribute, even when the description is the same. This 'zero-sum heuristic' suggests that advantages in one area are compensated by disadvantages in another.
Researchers at University at Buffalo are testing a nasal spray anesthetic and ozone delivery device to eliminate drilling and injections in dental procedures. The studies aim to improve patient comfort and reduce pain associated with dental care.
Researchers successfully regenerated tooth root and supporting periodontal ligaments using stem cells harvested from wisdom teeth. The technique shows promise for restoring tooth function in human patients.
Researchers have successfully regenerated tooth root and periodontal ligaments using stem cells harvested from wisdom teeth. The technique shows promise for clinical application in human patients, offering an alternative to dental implants for those who don't have sufficient jaw bone.
Researchers analyzed tooth enamel to determine early human relatives' diet, finding seasonal variations in leaves, fruit, seeds, roots, and possibly grazing animals. This study sheds light on the variability of human diets over time, suggesting that it has been a key factor in modern humans' ability to adapt to different environments.
Research suggests that common antacids like lansoprazole can interfere with bacteria that cause plaque buildup and gingivitis. By disabling these bacteria, the compounds may prevent inflammation and damage to gums. If confirmed in future studies, these compounds could be widely available in oral care products.
A pig-sized, tusked creature discovered in Eritrea represents a missing link between ancient elephants and their modern counterparts. The finding suggests that mastodons and elephants originated in Africa, contradicting previous theories that placed their origins in Europe and Asia.
Research by Boston University links periodontal disease to increased stroke risk in older adults. The study suggests that periodontitis may be a marker for negative effects of risk factors common to both conditions.
Rutgers scientists have developed a polymer-based drug delivery system to kill bacteria that attack gum tissue during periodontal disease, promoting healing and regeneration of tissue and bone around teeth. The system treats bacterial infection, inflammation, and pain with pharmaceuticals incorporated into the material itself.
Researchers have developed a method to reconstruct historic climate and vegetation changes in the Great Plains using ancient bison teeth. The study found that bison teeth can provide information on grassland productivity, temperature patterns, and carbon dioxide levels, shedding light on past climate fluctuations.
A new tooth whitening procedure developed by Dr. Kim L. Capehart has been found to significantly lighten stubborn tetracycline stains, saving patients over $10,000 in dental restorative fees. The treatment involves a combination of prescription fluoride toothpaste, UV light, and customized trays.
Researchers present Phase 2 clinical results showing AC-100 stimulates the formation of new dentin, especially in deepest cavities. The study demonstrates a novel biological approach to promoting dentin formation as a supplement to routine dental care.
The study found that water fluoridation continues to be a cost-effective preventive measure, with annual per person savings ranging from AUS$56 in the 1970s to AUS$18 in the 1990s. However, the cost-saving benefits may decline with age due to plateaued new tooth decay and higher periodontal treatment needs.
Researchers found that cranberry flavonoids can inhibit the formation of dental plaque polysaccharide matrix, block bacteria adherence, prevent acid formation, and reduce acid tolerance of cariogenic organisms. These compounds may serve as potential anti-caries/anti-plaque agents.
Dr. Mina has researched fundamental aspects of craniofacial development for 18 years, focusing on tooth formation and patterning. Her work has been well-supported by grants and has successfully supervised numerous doctoral fellows.
The study presents a comprehensive overview of oral health research worldwide, highlighting the high risk of dental caries in rural children and adolescents. It emphasizes the importance of preventive efforts, education, and public awareness to improve oral health outcomes.
Dental stem cells have been characterized for their potential to differentiate into various tooth tissue types. The study aims to define the molecular and differentiation profiles of these cells, enabling ongoing tooth tissue engineering efforts.
Researchers conducted two large studies on children with dental amalgam fillings and found no adverse health effects. Despite initial concerns about mercury poisoning, the studies concluded that children exposed to amalgam had low levels of mercury in their urine and no measurable signs of damage to the brain or kidneys.
Research from diverse countries highlights the prevalence of oral conditions and dental caries among vulnerable populations. Studies have shown a strong correlation between socio-economic status and oral hygiene, as well as a higher risk of adverse oral conditions for those with lower education levels.
A recent study by Dr. Elizabeth Krall Kaye found that cigarette smokers are 70% more likely to need root canal treatment than nonsmokers. Quitting smoking is linked to a lower risk of needing the procedure.
Researchers have found a naturally occurring mutant chicken called Talpid with a complete set of teeth, similar to those of crocodiles. The team successfully induced teeth growth in normal chickens by activating dormant genes, paving the way for potential applications in tissue regeneration and tooth replacement.
Primates, including early humans, evolved to avoid predators, not hunt them. This theory suggests that intelligence and social skills developed as a result of outsmarting predators, leading to modern human traits like cooperation and socialization.
A randomized study found that fluoride varnish significantly reduced tooth decay risk in young children, with no adverse events reported. The study's results support the use of fluoride varnish to prevent tooth decay in very young children and highlight the importance of early dental visits.