Articles tagged with Teeth
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Research found that tooth loss is associated with increased levels of inflammatory markers and higher probabilities of diabetes, smoking, and obesity. Gum bleeding was linked to higher blood pressure and bad cholesterol levels. The study suggests that dental health could be a useful risk marker for heart disease in the future.
A 33,000-year-old Siberian fossil, known as the 'Altai dog', is found to be more closely related to modern dogs and prehistoric canids on the American continents than wolves. This challenges previous theories suggesting a recent emergence of modern dogs from wolf ancestors.
A new study led by the University of Washington found that certain South American mammals evolved long, strong teeth in response to the gritty dust and volcanic ash they encountered while feeding in an ancient tropical forest. The discovery contradicts the 140-year-old assumption about the evolution of specialized teeth.
A recent study found that postmenopausal women who smoked had significantly higher odds of experiencing tooth loss due to periodontal disease. The researchers also discovered that the more women smoked, the greater their risk of losing teeth as a result of periodontal disease.
Scientists at McGill University and the Federal University of Sao Paulo have identified osteopontin as a key player in X-linked hypophosphatemia (XLH), a rare bone disease characterized by soft bones and tooth abnormalities. This discovery may lead to the development of an enzyme-replacement therapy to treat XLH patients.
A six-month study published in General Dentistry found that using a germ-killing mouthrinse twice daily significantly reduced plaque and gingivitis compared to brushing alone. The study involved 139 adults with mild to moderate plaque and gingivitis, showing a 26.3% reduction in plaque and a 20.4% reduction in gingivitis.
Researchers examine how our evolutionary history contributes to current health problems, such as obesity and childbirth complications. They suggest that understanding our past can help us better address these issues with alternative solutions like doula support during birth.
Research published in the Journal of Dental Research shows that beta-catenin is crucial for odontoblast cell differentiation and root development. Tissue-specific inactivation of beta-catenin in developing odontoblasts resulted in molars lacking roots and thin incisors.
The study found that quartz particles can remove pieces of tooth enamel at extremely low forces, making them a significant contributor to dental microwear. In contrast, fossilized plant remains had a minor effect on tooth surfaces, leaving only cosmetic rubbing marks.
Researchers have developed a new substance inspired by mussels' adhesive, which can rebuild both enamel and dentin on teeth. Laboratory tests show that the gooey material promotes simultaneous remineralization of enamel and dentin, offering a potential solution for millions suffering from tooth sensitivity.
A recent study using dental microwear texture analysis found no evidence of increased starvation in saber-tooth cats before their extinction. Instead, the research suggests that these great cats and American lions were well-fed and actively hunted prey, challenging popular theories on megafaunal extinction.
Researchers used non-invasive X-ray technology to study the jaws and teeth of a primitive jawed fish called Compagopiscis. The discovery provides solid evidence that teeth evolved along with or soon after the development of jaws in early vertebrates, shedding light on our evolutionary ancestry.
Research from Karolinska Institutet found a significant association between difficulty chewing hard food and cognitive impairment, including dementia. The study of 557 people aged 77 or older suggests that maintaining good chewing ability may be crucial for brain health.
A 6,500-year-old human jaw bone with a tooth showing traces of beeswax filling has been discovered, offering evidence of ancient dentistry in Europe. The beeswax was likely applied to reduce pain and sensitivity from a vertical crack in the tooth.
Researchers found that enzyme-modified coconut oil strongly inhibited the growth of Streptococcus bacteria, a major cause of tooth decay. The study suggests that incorporating this natural compound into dental hygiene products could be a promising approach to combating microbial infection.
A study found that rheumatoid arthritis patients are four times more likely to develop gum disease, with severe cases associated with increased inflammatory markers and antibodies. Gum disease in these patients may contribute to the development and maintenance of systemic inflammation.
A study published in Nature magazine found that Australopithecus sediba had a varied diet consisting of fruits, tree bark, nuts, leaves and sedges. The team's analysis suggests they lived in a forested margin near grasslands, contrary to previous research on other hominin species.
A Swedish study found that dental plaque is associated with a significantly increased risk of premature death from cancer. The research tracked the health of almost 1,400 adults for 24 years and found that those with high levels of plaque had a 79% higher risk of dying early from cancer.
A study published in the Journal of Clinical Periodontology concludes that a two-step tooth implantation method is more effective than a one-step process. The research found that implants placed using the two-step procedure show less wear and tear over time, with greater bone stability.
A study by the Academy of General Dentistry found that sports and energy drinks cause irreversible damage to teeth due to high acidity levels. Energy drinks are twice as likely to destroy enamel than sports drinks.
Multituberculates, rodent-like creatures, developed complex back teeth for crushing plant material, allowing them to thrive after dinosaur extinction, while sharper front teeth became less prominent.
Using guillotine-based experiments and computer modeling, researchers at the University of Bristol studied the efficiency of bladed tooth shapes. They found that different shaped teeth are optimized for different types of food, with V-shaped edges being similar to those found in sharks and carnivorous mammals.
A University of Alberta paleontologist has discovered that Tyrannosaurus rex had the greatest variation in tooth morphology or structure among all tyrannosaurids. The varying edges enabled strong teeth to cut through flesh and bone, while the placement and angle directed food into its mouth.
Researchers identified two substances in licorice root that kill major bacteria responsible for tooth decay and gum disease. Licoricidin and licorisoflavan A were found to be effective antibacterial substances, potentially treating or preventing oral infections.
The 'plasma brush' uses chemical reactions to disinfect and clean out cavities, forming a better bond for cavity fillings. This technology could reduce costs by 75% and increase the lifespan of fillings by 60%, benefiting patients and dentists.
A study by the American Heart Association found that frequent professional tooth scaling can lower the risk of heart attacks and strokes. Participants who received regular cleanings had a 24% lower risk of heart attack and 13% lower risk of stroke compared to those who never received dental care.
Researchers have re-analyzed ancient deciduous teeth from Grotta del Cavallo, Italy, and found they belong to anatomically modern humans. The new study suggests that Homo sapiens arrived in Europe earlier than previously known, with dates ranging from ~43,000-45,000 cal BP.
Researchers at the University of Leeds have developed a peptide-based fluid that reverses tooth decay by stimulating regeneration of damaged tooth tissue. The treatment is applied directly to the affected area, providing a natural and non-invasive solution to filling teeth without drilling.
A new human syndrome has been identified with craniosynostosis, maxillary hyperplasia, delayed tooth eruption, and supernumerary teeth due to a recessively inherited IL11RA gene mutation. The disorder affects the normal development of craniofacial bones and teeth.
Researchers found that females preferred to disperse from their natal groups, similar to chimpanzees and human groups. The study suggests early hominins' social structure was not like that of gorillas.
Two studies published in the Journal of Dental Research found significant income-related inequalities in dental service utilization and tooth loss among Europeans aged 50+ and US adults. Income inequality was associated with higher odds of reporting greater tooth loss, highlighting the need to address social determinants of health.
Researchers found periodontal ligament stem cells to be the most efficacious in treating advanced gum disease, outperforming other dental stem cell types. The study suggests PDLSCs may offer a new treatment option for periodontitis, a common cause of tooth loss worldwide.
Researchers have found a bone-creating protein that can improve dental implant success when used to augment the maxillary sinus. The protein, BMP, induces superior bone quality and improves chances for successful implants compared to conventional bone grafting.
Scientists have found fluoride forms a protective shield on teeth that is only 6 nanometers thick, sparking doubts about its ability to fight cavities.
Researchers mapped the topography of bat molars using GPS technology, revealing trends in dental complexity across 17 species of New World leaf-nosed bats. The study found that fruit-eating species had sharp outer edges and large surfaces with tiny indentations, while insect-eating species had simpler shearing surfaces.
Researchers uncover eight ancient teeth in Israel that are similar to those of modern humans, sparking new questions about the origins of Homo sapiens. The discovery, part of a larger excavation at the Qesem cave site, provides valuable insights into early human evolution and migration patterns.
New research reveals that odontoblast cells in teeth orchestrate an immune response to protect against bacteria-induced decay. The cells produce proteins that down-regulate inflammation, protecting the underlying pulp from damage.
Researchers found a significant decrease in tooth decay among young American Indians who switched from sweetened soda to water, with up to 63% reduction in early stage cavities. The study suggests that promoting water as a primary drink can have a substantial impact on preventing tooth decay.
Scientists use atom-probe tomography to map millions of individual atoms in a sea creature's tooth, revealing organic/inorganic interfaces. This breakthrough opens up possibilities for tracking fluoride in teeth and cancer, osteoporosis drugs in bone, and designing new materials with improved properties.
Archaeologists have found evidence of Homo sapiens in the Qesem Cave in Israel dating back to 400,000 years ago. The discovery challenges the long-held theory that modern man emerged from Africa 200,000 years ago and may indicate significant evolutionary changes in human behavior during this period.
Researchers have discovered the secret behind sea urchin teeth's ever-sharp quality, which could be mimicked to create self-sharpening tools. The unique biomineral mosaic structure of the teeth allows them to maintain sharpness despite constant grinding and scraping.
Scientists challenge conventional wisdom on fluoride's effectiveness in preventing tooth decay, finding the protective shield on teeth is just 6 nanometers thick, sparking questions about its ability to protect teeth.
Researchers found that leaf-cutter ants change tasks when mandibles wear out, allowing more efficient sisters to take over. This division of labor allows the colony to remain productive while minimizing energy loss.
Researchers found that compounds in cranberry disrupt enzymes used by bacteria to form plaque, reducing acid production and cavities. Additionally, polyphenols from red wine waste inhibit S. mutans' activity and reduce acid production.
A study of Neanderthal and early human teeth reveals that modern humans' slow development and long childhood are recent traits. This may have given early humans an evolutionary edge over Neanderthals, facilitating additional learning and complex cognition.
Researchers have discovered how cone snails inject their venom after shooting a harpoon-like tooth into their prey. The venom is produced in the venom duct and pumped through by rapid contractions of the venom bulb, which also contains specialized muscles.
Researchers at UIC's Brodie Laboratory have successfully developed a technique to reattach teeth using stem cells, which could lead to a major advance in the battle against gum disease. The new strategy involves using periodontal ligament stem cells to form new fibrous attachments between the tooth and bone.
A recent study published in the Journal of Dental Research has identified genetic variations in taste pathway genes as predictors of tooth decay. The researchers found associations between TAS2R38 and TAS1R2 genes and caries risk or protection.
According to a study published in JADA, asthma and cavities are both prevalent childhood diseases in the US. However, researchers found little evidence suggesting that asthma causes tooth decay, with some studies showing children with asthma having fewer cavities.
A new method, developed by Prof. Herzl Chai at Tel Aviv University, measures the size of chips in tooth fossils to determine the types of foods early humans consumed. The study found that larger chips indicate harder foods like nuts and seeds.
A new study reveals that mesenchymal stromal cells from wisdom teeth can be reprogrammed into stem cells, offering a potential source of treatment for patients. The cells displayed varying degrees of robustness and proliferated up to 100 times more efficiently than typical skin-cell-derived iPS cells.
Researchers have used a tuatara's 3D computer model to understand how its jaw joints and muscles work together to prevent tooth damage. The study suggests that humans could benefit from a similar feedback system to reduce the risk of dental implant failures.
A review article debunks common dental myths, highlighting the importance of a balanced diet in preventing tooth decay, osteoporosis, and gum disease. Carole Palmer, a professor at Tufts University School of Dental Medicine, outlines how nutrition affects oral health in children, teenagers, expectant mothers, adults, and elders.
Scientists have developed a multilayered, nano-sized film containing alpha melanocyte stimulating hormone to regenerate dental pulp, potentially revitalizing damaged teeth and reducing the need for root canal procedures. The film has anti-inflammatory properties and increased the number of fibroblasts in dental pulp.
A study published in Forensic Science International reveals that a person's dental patterns can be used as proof of their identity with the same degree of reliability as DNA testing. The researchers analyzed over 3,000 people and found variability values comparable to mitochondrial DNA.
A study analyzing ancient teeth found that it's possible to correctly identify species with a success rate ranging from 60% to 80%. Computer simulation was used to observe the effects of environmental changes on morphology of the teeth. The research suggests that the common ancestor of Neanderthals and Homo sapiens may still be unknown.
A new study found that preschool children with tooth decay are more likely to be overweight or obese than the general population. The study also discovered that both normal-weight and overweight children consume excessive calories, regardless of their weight status.
Researchers found tooth marks on bones from large dinosaurs and a small marsupial, dated around 75 million years ago. The marks were likely made by ancient mammals, such as multituberculates, which gnawed on the bones for minerals.
A new study by Case Western Reserve University researchers found that leaded gasoline was the predominant source of lead exposure for African-American children in Cleveland during the latter half of the 20th century. The study used dental records and other data to show that lead levels in teeth increased dramatically during this period...
Researchers identify 66 proteins in gingival crevicular fluid (GCF), a potential early test for gum disease, and uncover antibacterial substances involved in fighting infection.