Articles tagged with Teeth
A Late Miocene ape maxilla was discovered in the Kutch basin, western India, significantly extending the southern range of ancient apes in the Indian Peninsula. The specimen, dated to around 11-10 million years ago, belongs to the Sivapithecus genus and provides new insights into human evolution.
A team of researchers at UC Davis has developed a new method to estimate the biological sex of human skeletal remains based on protein traces from teeth. This method uses sensitive mass spectrometry to measure proteins and can be used alongside existing techniques.
A 9,000-year-old child's tooth has revealed insights into Alaska's ancient people, their genetic makeup and diets. The tooth, linked to the Ancient Beringian lineage, indicates that these groups remained in Alaska for thousands of years after migrating across the Bering Land Bridge.
A study on Changchunsaurus parvus reveals unique features in its teeth, including wavy enamel and a method of tooth replacement that allowed for continuous shearing surface formation. These findings suggest early adaptations for herbivory in this small herbivorous dinosaur.
New research reveals that ligaments hold teeth in place, contradicting previous assumptions. Early dinosaurs like Changchunsaurus parvus had unique tooth replacement methods and wavy enamel.
A Rutgers University study reveals that older adults with 10-19 teeth are at higher risk for malnutrition. Patients with tooth loss or malnutrition experienced weight loss, dementia, and depression, highlighting the importance of dental clinics in identifying nutritional status issues.
A study found that children generally lose their first baby tooth at six years old, and their emotions range from joy to fear. Parents of children who lost a milk tooth reported mostly positive feelings, with those whose previous dental visits were cavity-related experiencing fewer positive emotions.
Researchers discovered that 80% of adult remains showed evidence of tooth decay and over half were missing teeth. The study found pipe smoking marks on many of the skeletons, suggesting that smoking was a major contributing factor to poor oral health in this population.
A newly discovered Tylosaurus fossil, likely a newborn, lacks the characteristic long snout of the species. Researchers found that the development of this feature occurs extremely quickly, between birth and juvenile stage.
Fossil teeth from Italy's Fontana Fanuccio and Visogliano sites show Neanderthal dental features emerged by 450,000 years ago, adding to the understanding of a period of complex human evolution. The discovery supports an early divergence of the Neanderthal lineage and suggests multiple human lineages inhabited the region.
A recent grant from the National Institute of Dental and Craniofacial Research will support a study characterizing the oral microbiome in children with HIV infection. The study aims to understand how HIV affects tooth decay, with potential applications for personalized medicine and improved prevention strategies.
Researchers have successfully conducted a Phase I clinical trial in China, showing that stem cells extracted from baby teeth can regrow dental tissue, promoting healthy root development and increased blood flow. The treatment has been found safe and effective, with patients regaining sensation in their injured teeth.
A new study reveals that humans may have cultivated plants as far back as 4,800 years ago in Southern Brazil. The analysis of ancient human remains found teeth and bones rich in carbohydrates, suggesting a diet rich in cultivated yams and sweet potatoes.
Researchers found that Australopithecus africanus had wider, splayed roots than Paranthropus robustus and Paranthropus boisei, indicating increased lateral chewing loads. The study suggests that the orientation of tooth roots provides valuable insights into the dietary ecology of ancient humans and their extinct relatives.
Researchers analyzed gomphotheres' tooth fossils for dietary patterns, finding evidence of tree browsing and herb grazing. The study suggests that the mammals' diets were flexible according to resource availability and latitudinal climate gradients.
Scientists develop peptide hydrogel that stimulates new blood vessel and dental pulp growth in teeth after root canals. The material aims to preserve more of the existing dental pulp and help grow new tissue, making the procedure less invasive.
Researchers analyzed ancient and modern koala and kangaroo teeth to understand diet changes across millennia. The study found that tooth wear patterns are indicative of dietary habits, not environmental factors.
Researchers have developed bioengineered tooth buds that exhibit features of natural teeth, paving the way for a promising tooth replacement therapy. The new method uses postnatal dental cells to create bioengineered tooth buds with innervation, eliminating the need for immunosuppressors.
A new study from Michigan Medicine reveals that young people who receive opioid prescriptions immediately before or after wisdom teeth removal are nearly three times as likely to keep using opioids weeks or months later. Those in their late teens and twenties have the highest odds of persistent opioid use.
Researchers used FDA-approved nanoparticles to disrupt biofilms and prevent tooth decay in both human-plaque-like biofilm and animal models. The treatment showed strong evidence of its effectiveness in preventing mineral destruction of the tooth's surface and blocking cavity formation.
A systematic review and meta-analysis of random controlled trials found that chlorhexidine mouthwash reduces bacteraemia by only 12%, indicating its relatively low effectiveness. Despite this, the researchers recommend using a mouthwash with chlorhexidine before dental procedures due to its low cost and lack of adverse reactions.
Researchers have developed a new, less destructive teeth whitening method using blue light-activated nanoparticles. The treatment showed similar whitening levels to hydrogen peroxide-based agents without enamel damage or cytotoxicity. Additionally, the therapy demonstrated antibacterial activity against certain bacteria.
A team of scholars found that the Deer Stone-Khirigsuur Culture used veterinary dental procedures to remove baby teeth causing young horses pain or difficulty feeding. This discovery reveals that equine veterinary care was developed in eastern Eurasia over 3,000 years ago.
The discovery of Brasilestes stardusti, the oldest known mammal in Brazil, is a significant find that sheds light on the evolution of mammals during the Mesozoic Era. The species was named after British rock star David Bowie and is believed to be a placental mammal.
Researchers have discovered that an increase in certain substances in oral fluid can indicate caries development. They found a way to prevent the disease by analyzing changes in saliva composition, enabling early detection and treatment.
Researchers at Queen Mary University of London have developed a new method to create materials with remarkable precision and order, resembling dental enamel. This breakthrough could lead to the prevention and treatment of tooth decay and sensitivity, benefiting over 50% of the world's population.
A study published in Scientific Reports found microfossils of fish and plant remains in a Mesolithic skeleton, providing evidence of a varied diet that included both aquatic and terrestrial food sources. The discovery sheds light on the lifestyle of early people in the Mediterranean region during this period.
The Graduate School of Creative Design Engineering at UNIST has received global recognition for its design excellence in collaboration with Dr. Pik Co., Ltd. The company's fully automatic oral cleaner, Dr. Pik, has won the iF Design Award 2018 for its innovative design and functionality.
A new study revealed that ancient elephant relatives, such as Gomphotherium connexum and G. steinheimense, primarily ate soft foliage and grasses 17 million years ago. The team found phytoliths stuck to their teeth and analyzed wear patterns on fossil tooth surfaces to confirm these results.
A University of Otago study found that New Zealanders with dementia and older men have poorer oral health, with dirtier and more decayed teeth. The researchers emphasize the need for improved oral care in aged residential care, citing higher rates of cognitive and physical impairments as a major challenge.
A 34-million-year-old whale skull from Antarctica reveals early whales didn't have baleen, but instead used teeth to bite large prey. The discovery provides a rare window into the earliest phase of filter feeding evolution.
Researchers studied the teeth of carnivorous dinosaurs and found that different species used varying biting strategies to capture and consume their prey. The study reveals that some dinosaurs, like Dromaeosaurus, were adapted for handling struggling prey or processing bone, while others, like Troodon, preferred softer fare.
A NYU Dentistry study found that a comprehensive cavity prevention program with primary and secondary prevention strategies significantly lowers the rate of new and untreated cavities compared to traditional molar sealant programs. Both school-based programs reduced the risk of untreated decay over time.
Researchers at the University of Washington have designed a convenient and natural product that uses proteins to rebuild tooth enamel and treat dental cavities. The new technology restores mineral structure found in native tooth enamel, enabling daily use as part of preventive dental care routine.
Researchers found a simple patterning cascade model that accounts for shifts in molar evolution during hominin origins, predicting variations in molar configuration based on embryonic signaling cells. The study suggests small, subtle tweaks to developmental toolkit can result in complex anatomy.
A recent study published by British American Tobacco found that vaping does not cause the same level of tooth discoloration as smoking. The research used cow's teeth to test the impact of e-cigarette vapour and tobacco-heated products on tooth colour, with surprising results.
The study found that silver-nitrate/fluoride-varnish treatment reduced tooth decay in children aged 2-14. However, the treatment did not significantly alter the natural oral microbiome.
Research presented at the American Heart Association's Epidemiology and Prevention | Lifestyle and Cardiometabolic Health Scientific Sessions 2018 found that middle-aged adults with two or more teeth lost have a 23% increased risk of cardiovascular disease. The study suggests that tooth loss in middle age is related to inflammation and...
Researchers created a 3D bioengineered tooth bud model using Gelatin Methacrylate (GelMA) hydrogel and postnatal dental stem cells. Decellularized tooth bud extracellular matrix (dTB ECM) was introduced to enhance dental stem cell differentiation, resulting in whole tooth structures upon in vivo implantation
A large European study found that women with larger families, particularly those with three children, experience an average of 4 fewer teeth than mothers with two children. Higher levels of educational attainment and age also contribute to a lower risk of tooth loss.
A recent study found that thousands of children with oral pain in London are being taken to pharmacies and non-dental health services, resulting in unnecessary use of NHS resources. The study highlights the need for integrated systems and better referral processes to ensure children receive dental treatment as soon as possible.
Researchers have developed liposomal nanoparticles that can deliver collagenase enzymes to remodel teeth in the mouth without surgery. This technology has shown promising results in pre-clinical studies, potentially leading to faster and less painful orthodontic procedures.
A 177,000-194,000-year-old fossil found in Israel shifts the estimated departure time of humans from Africa by 40,000-50,000 years. The discovery includes sophisticated stone tools with Levallois technique features, linking technology emergence to Homo sapiens appearance
A scientifically based CAMBRA model, including risk assessment and aggressive preventive measures, dramatically reduces tooth decay in community dental practices. The study's findings support earlier research and have potential to transform dental care for high-risk patients at lower costs.
Researchers at Tohoku University developed a novel cleaning method using microbubbles to efficiently remove dental plaque from implants. The cavitating jet technique outperformed traditional water jets in removing plaque after longer exposure, particularly on hard-to-reach areas.
A recent study found that poor oral health, including complete tooth loss and dry mouth, was associated with an increased risk of frailty in older individuals. The findings suggest that managing poor oral health could be important in preventing frailty.
Researchers have identified a 3.5-million-year-old bear from the Canadian High Arctic with a sweet tooth, determined by cavities in its teeth. The bear, Protarctos abstrusus, was slightly smaller than a modern black bear and had a flatter head.
Researchers have developed a one-stage technology for producing artificial nano-hydroxyapatite with increased biocompatibility and controllable properties. The material can be used in orthopedics, pharmaceuticals, aesthetic medicine and coatings for medical devices.
Researchers developed a method to determine human sex from tooth enamel using peptides. The approach successfully identified sex chromosome-linked isoforms of amelogenin, an enzyme-forming protein, from acid-etched samples, confirming sex in archaeological and legal contexts.
The density and length of teeth on male bush-crickets' wings play a crucial role in altering the tone of their mating calls, with shorter files producing more musical calls and rigid files with higher tooth density producing lower tonal purity.
A new study finds that children who don't drink tap water are more likely to have tooth decay, while those who do tend to have elevated blood lead levels. The study analyzed nearly 16,000 children and adolescents aged two to 19 years.
Galla Chinensis has been identified as a strong potential agent in preventing dental caries due to its antibacterial capacity and tooth mineralization benefit. The main active ingredient of Galla Chinensis is unknown, but medium molecular weight gallotannins have been shown to be most effective.
A study by scientists at the Department of Energy's Lawrence Berkeley National Laboratory has revealed a unique chain mail-like woven microstructure in parrotfish teeth that enables their remarkable bite and resilience. This structure also provides a blueprint for creating ultra-durable synthetic materials.
A new survey reveals that almost half of UK kids fib about brushing their teeth, with barely a third of parents supervising their children's brushing twice a day. The consequences of neglecting children's teeth can be dire, with 40,970 surgical procedures carried out on children in 2014-15.
Researchers have discovered a method to identify Vitamin D deficiency through dental X-ray images. The study found that the shape of the pulp horn in a tooth can indicate prior deficiency, allowing for early detection and prevention of related bone health issues.
A new study found that half of UK adults (48%) admit to missing at least a quarter of their teeth while brushing. The survey also shows a lack of guidance on tooth brushing habits, with six in ten adults having never been shown how to brush correctly by a dentist or hygienist.
A team of researchers has developed an injectable antimicrobial gel that could improve root canal treatment outcomes by providing sustained antimicrobial properties. The gel, which has been shown to have extended residual antibacterial properties, is biocompatible and has minimal toxic effects on stem cells.
Osteocytes are identified as the major source of receptor activator of nuclear factor-κB ligand (RANKL) during orthodontic tooth movement, regulating bone remodeling and osteoclastic differentiation.
A new study from Field Museum and University of Queensland explores the use of flying fox teeth as currency in Solomon Islands. The research reveals that while bats' teeth are culturally valuable, they are primarily hunted for meat, an important source of protein on the island.
Researchers found that every captive orca examined had damaged teeth, with over 65% displaying moderate to extreme tooth wear. The study suggests that daily flushing of chemicals can lead to chronic antibiotic therapy compromising the whale's immune system. The findings raise serious concerns for the health and welfare of captive orcas.