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- Most dentists have experienced aggression from patients
Roughly half of US dentists experienced verbal or reputational aggression by patients in the past year, and nearly one in four endured physical aggression, according to a new study.
- A tiny jaw from Greenland sheds light on the origin of complex teeth
Scientists have described the earliest known example of dentary bone with two rows of cusps on molars and double-rooted teeth. The new findings offer insight into mammal tooth evolution, particularly the development of double-rooted teeth.
- Mechanical forces of biofilms could play role in infections
Studying bacterial biofilms, scientists have discovered that mechanical forces within them are sufficient to deform the soft material they grow on, e.g. biological tissues, suggesting a 'mechanical' mode of bacterial infection.
- Light stimulation makes bones heavier
Researchers showed that laser ablation of bone inhibits expression of the osteogenesis inhibitor protein sclerostin without causing inflammation, unlike the conventional bur-drilling technique. Further investigations confirmed that this beneficial bio-stimulation works by inducing mechanical stress. These findings help advance research into the treatment of osteoporosis as well as specific enhancement of bone regrowth in orthopedic and dental surgery.
- Researchers demonstrate how changing the stem cell response to inflammation may reverse periodontal disease
Scientists have discovered that a specific type of molecule may stimulate stem cells to regenerate, reversing the inflammation caused by periodontal disease.
- Breakthrough for tomorrow's dentistry
New knowledge on the cellular makeup and growth of teeth can expedite developments in regenerative dentistry - a biological therapy for damaged teeth - as well as the treatment of tooth sensitivity.
- Researchers ask: how sustainable is your toothbrush?
Researchers have examined the sustainability of different models of the most commonly used oral health product - the toothbrush - to ascertain which is best for the planet and associated human health.
- Polymers prevent potentially hazardous mist during dentist visit
If the mist in a dentist's office -- sent flying into the air by spinning, vibrating tools -- contains a virus or some other pathogen, it is a health hazard. So researchers studied the viscoelastic properties of food-grade polymers and discovered that the forces of a vibrating tool or dentist's drill are no match for them. Not only did a small admixture of polymers completely eliminate aerosolization, but it did so with ease.
- Stopping tooth decay before it starts -- without killing bacteria
Eating sugar or other carbohydrates after dental cleanings causes oral bacteria to quickly rebuild plaque and to produce acids that corrode tooth enamel, leading to cavities. Today, scientists report a treatment that could someday stop plaque and cavities from forming in the first place, using a new type of cerium nanoparticle formulation.
- Cancer mutations caused by bacterial toxin preventable
Reports show that cancer is the second leading cause of death globally. Scientists have found DNA mutations in some cancers that link them to a bacterial toxin called colibactin. Their findings improve understanding of how some cancers develop, and could help in their prevention.
- Atomic force microscopy reveals nanoscale dental erosion from beverages
Researchers used atomic force microscopy to quantitatively evaluate how acidic and sugary drinks affect human tooth enamel at the nanoscale level. This novel approach is useful for measuring mechanical and morphological changes that occur over time during enamel erosion induced by beverages.
- Smile: Atomic imaging finds root of tooth decay
Researchers combined complementary imaging techniques to explore the atomic structure of human enamel, exposing tiny chemical flaws in the fundamental building blocks of our teeth. The findings could help scientists prevent or possibly reverse tooth decay.
- Gum disease may raise risk of some cancers
People who have periodontal (gum) disease may have a higher risk of developing some forms of cancer.
- Robot jaws shows medicated chewing gum could be the future
Medicated chewing gum has been recognized as a new advanced drug delivery method but currently there is no gold standard for testing drug release from chewing gum in vitro. New research has shown a chewing robot with built-in humanoid jaws could provide opportunities for pharmaceutical companies to develop medicated chewing gum.
- Materials scientists drill down to vulnerabilities involved in human tooth decay
Researchers have cracked one of the secrets of tooth decay. The materials scientists are the first to identify a small number of impurity atoms in human enamel that may contribute to the material's strength but also make it more soluble. They also are the first to determine the spatial distribution of the impurities with atomic-scale resolution. The discovery could lead to a better understanding of human tooth decay as well as genetic conditions that affect enamel formation.
- Tongue microbes provide window to heart health
Microorganisms on the tongue could help diagnose heart failure, according to new research. 'The tongues of patients with chronic heart failure look totally different to those of healthy people,' said one of the researchers.
- Could the cure for IBD be inside your mouth?
A new collaborative study reveals that inflammatory bowel disease (IBD) may be the latest condition made worse by poor oral health via a clash between the mouth and gut microbiomes.
- Harnessing pickle power to promote dental health
A research team evaluated 14 different types of Sichuan pickles from southwest China. They extracted 54 different strains of Lactobacilli and found that one, L. plantarum K41, significantly reduced the incidence and severity of cavities. K41 was also highly tolerant of acids and salts, an additional benefit as a probiotic for harsh oral conditions. It also could have potential commercial value when added to dairy products.
- Cavity-causing bacteria assemble an army of protective microbes on human teeth
It's not just the presence of bacteria that can lead to disease; their spatial arrangement also matters. When scientists examined the bacteria that causes tooth decay, they found it 'shields' itself under blankets of sugars and other bacteria in a crown-like arrangement, helping it evade antimicrobials and concentrate its tooth-damaging acids.
- Fluoride in water is not associated with increase in osteosarcoma
The results of a new study demonstrated that community water fluoridation is not associated with increased risk of osteosarcoma.
- Immune-regulating drug improves gum disease in mice
A drug that has life-extending effects on mice also reverses age-related dental problems in the animals, according to a new study.
- AI to make dentists' work easier
Researchers have developed a new automatized way to localize mandibular canals.
- Improving the treatment of periodontitis
For the first time, researchers have shown that a unicellular parasite commonly found in the mouth plays a role in both severe tissue inflammation and tissue destruction.
- Teeth serve as 'archive of life,' new research finds
Teeth constitute a permanent and faithful biological archive of the entirety of the individual's life, from tooth formation to death, a team of researchers has found. Its work provides new evidence of the impact that events, such as reproduction and imprisonment, have on an organism.
- Commonly used mouthwash could make saliva significantly more acidic, change microbes
The first study looking at the effect of chlorhexidine mouthwash on the entire oral microbiome has found its use significantly increases the abundance of lactate-producing bacteria that lower saliva pH, and may increase the risk of tooth damage. "In the face of the recent COVID-19 outbreak many dentists are now using chlorhexidine as a pre-rinse before doing dental procedures. We urgently need more information on how it works on viruses," said one of the researchers.
- Stem cells and nerves interact in tissue regeneration and cancer progression
Researchers show that different stem cell populations are innervated in distinct ways. Innervation may therefore be crucial for proper tissue regeneration. They also demonstrate that cancer stem cells likewise establish contacts with nerves. Targeting tumor innervation could thus lead to new cancer therapies.
- Ouch: Patients prescribed opioids after tooth extraction report worse pain
The use of opioids to soothe the pain of a pulled tooth could be drastically reduced or eliminated altogether from dentistry, say researchers.
- Researchers discover tooth-enamel protein in eyes with dry AMD
A protein that normally deposits mineralized calcium in tooth enamel may also be responsible for calcium deposits in the back of the eye in people with dry age-related macular degeneration (AMD), according to a new study.
- Not only what you eat, but how you eat, may affect your microbiome
Researchers found that post-stroke patients re-grow a healthy microbiota in their mouth and gut when they revert to normal food intake from tube feeding. These results emphasize the need to actively normalize feeding in these patients, not only to minimize the risks of tube feeding, but also because oral feeding significantly alters the microbiome of both the mouth and the gut, potentially with beneficial consequences for overall health.
- The microbes in your mouth, and a reminder to floss and go to the dentist
Most people know that good oral hygiene -- brushing, flossing, and regular dental visits -- is linked to good health. Microbiome researchers offer fresh evidence to support that conventional wisdom, by taking a close look at invisible communities of microbes that live in every mouth. Their study found a correlation between people who did not visit the dentist regularly and increased presence of a pathogen that causes periodontal disease.
- Could this plaque identifying toothpaste prevent a heart attack or stroke?
For decades, researchers have suggested a link between oral health and inflammatory diseases affecting the entire body -- in particular, heart attacks and strokes. Results of a randomized pilot trial of Plaque HD®, the first toothpaste that identifies plaque so that it can be removed with directed brushing, showed that it produced a statistically significant reduction in C-reactive protein, a sensitive marker for future risks of heart attacks and strokes, among those with elevations at baseline.
- How too much fluoride causes defects in tooth enamel
Exposing teeth to excessive fluoride alters calcium signaling, mitochondrial function, and gene expression in the cells forming tooth enamel -- a novel explanation for how dental fluorosis, a condition caused by overexposure to fluoride during childhood, arises.
- Chemical found in drinking water linked to tooth decay in children
Children with higher concentrations of a certain chemical in their blood are more likely to get cavities, according to a new study. Researchers found that higher concentrations of PFAS were associated with greater tooth decay in children.
- Why eating yogurt may help lessen the risk of breast cancer
One of the causes of breast cancer may be inflammation triggered by harmful bacteria suggest researchers. Scientists advise consuming natural yogurt, which contains beneficial bacteria which dampens inflammation and which is similar to the bacteria found in breastfeeding mothers. Their suggestion is that this bacteria is protective because breast feeding reduces the risk of breast cancer. The consumption of yogurt is also associated with a reduction in the risk of breast cancer.
- Preventing, healing tooth decay with a bioactive peptide
Cavities, or dental caries, are the most widespread non-communicable disease globally, according to the World Health Organization. Having a cavity drilled and filled at the dentist's office can be painful, but untreated caries could lead to worse pain, tooth loss, infection, and even illness or death. Now, researchers report a bioactive peptide that coats tooth surfaces, helping prevent new cavities and heal existing ones in lab experiments.
- Ancient 'chewing gum' yields insights into people and bacteria of the past
Researchers have succeeded in extracting a complete human genome from a thousands-of-years old 'chewing gum.' According to the researchers, it is a new untapped source of ancient DNA.
- Link between obesity and gum disease
Obesity and gum (periodontal) disease are among the most common non-communicable diseases in the United States -- and studies show these chronic conditions may be related. This new study explores the effect of obesity on non-surgical periodontal care and evaluates potential pathways that may illustrate the connection between the two conditions.
- Brush your teeth to protect the heart
Brushing teeth frequently is linked with lower risks of atrial fibrillation and heart failure, according to a new study.
- Experts call for more active prevention of tooth decay for children's teeth
Three-year trial comparing three treatment strategies for tooth decay in children's teeth finds no evidence to suggest that conventional fillings are more successful than sealing decay into teeth, or using preventive methods alone. 43% of those participating in the study experienced toothache or dental infection regardless of the treatment received.
- First adult molars are 'living fossils' that hold a 'health record' dating back to the womb
Researchers have found that a person's first permanent molars carry a life-long record of health information dating back to the womb, storing vital information that can connect maternal health to a child's health, even hundreds of years later.
- Milk from teeth: Dental stem cells can generate milk-producing cells
Stem cells of the teeth can contribute to the regeneration of non-dental organs, namely mammary glands. According to a new study, dental epithelial stem cells from mice can generate mammary ducts and even milk-producing cells when transplanted into mammary glands. This could be used for post-surgery tissue regeneration in breast cancer patients.
- Soft drinks found to be the crucial link between obesity and tooth wear
A new study has found that sugar-sweetened acidic drinks, such as soft drinks, is the common factor between obesity and tooth wear among adults.
- A 'shocking' new way to treat infections
New research introduces a revolutionary treatment for these infections. The group is utilizing electrochemical therapy (ECT) to enhance the ability of antibiotics to eradicate the microbes.
- A secret in saliva: Food and germs helped humans evolve into unique member of great apes
Researchers discovered that the human diet -- a result of increased meat consumption, cooking and agriculture -- has led to stark differences in the saliva of humans compared to that of other primates.
- Special sensory cells in gums protect against periodontitis
Newly discovered chemical-sensing cells in the gums protect the mouth by standing guard against infections that damage soft tissue and destroy the bone that supports the teeth. With the help of bitter taste receptors that also detect byproducts from harmful bacteria, these special gum cells trigger the immune system to control the amount and type of bacteria in the mouth and could one day lead to personalized dental treatments against gum disease.
- Tooth loss associated with higher risk of heart disease
Adults who have lost teeth due to nontraumatic reasons may have a higher risk of developing cardiovascular disease.
- As we age, oral health plays increasing role in overall health
Oral health is a critical component to overall health for all ages, but according to dental and medical experts, vigilance is especially critical for the elderly.
- Gum disease linked with higher risk of hypertension
People with gum disease (periodontitis) have a greater likelihood of high blood pressure (hypertension), according to a new study.
- An oral splint that can reduce Tourette syndrome tics
Researchers developed a new device that ameliorates the characteristic vocal and motor tics of Tourette syndrome. By biting down on the simple, removable oral splint, both adults and children with Tourette syndrome experienced a reduction in their tics. The action of biting down on the oral splint could serve as a sensory trick; sensory tricks are known to ameliorate motor symptoms in cervical dystonia. The device might be particularly effective in children.
- Acute periodontal disease bacteria love colon and dirt microbes
Mythbuster: The idea that bacterial collaborations within microbiomes, like in the mouth, have evolved to be generous and exclusive very much appears to be wrong. In an extensive experiment, lavish collaborations ensued between random microbes. And some bacteria from the same microbiome were stingy with one another.
- Poor oral health linked to cognitive decline, perceived stress
Two studies explore the relationship between poor oral health and cognitive decline and the effects of perceived stress and social support on dry mouth among older Chinese Americans.
- Scientists uncover key new molecules that could help to tackle tooth loss and regeneration
New research published in the Journal of Dental Research has shed light on the science behind the formation of the periodontal ligament, which helps keep the tooth stable in the jawbone. This improved understanding will help scientists work towards regenerating the tissues that support teeth. This is a peer-reviewed, observational study conducted in rodent teeth and human cells.
- First human ancestors breastfed for longer than contemporary relatives
By analyzing the fossilized teeth of some of our most ancient ancestors, scientists have discovered that the first humans significantly breastfed their infants for longer periods than their contemporary relatives.
- Elite athletes have poor oral health despite brushing twice daily
Elite athletes have high rates of oral disease despite brushing their teeth more frequently than most people, finds a new study.
- A new method of tooth repair? Scientists uncover mechanisms to inform future treatment
Stem cells hold the key to wound healing, as they develop into specialized cell types throughout the body -- including in teeth. Now an international team of researchers has found a mechanism that could offer a potential novel solution to tooth repair.
- Fluoride may diminish kidney and liver function in adolescents
Fluoride exposure may lead to a reduction in kidney and liver function among adolescents, according to a new study.
- Visits to the dentist decline in old age, especially among minorities
Visits to the dentist drop significantly after adults turn 80, finds a new study.
- Maternal secrets of our earliest ancestors unlocked
New research brings to light for the first time the evolution of maternal roles and parenting responsibilities in one of our oldest evolutionary ancestors. Australopithecus africanus mothers breastfed their infants for the first 12 months after birth, and continued to supplement their diets with breastmilk during periods of food shortage. Tooth chemistry analyses enable scientists to 'read' more than two-million-year-old teeth. Finding demonstrates why early human ancestors had fewer offspring and extended parenting role.
- Dentistry: Root canal work not so bad after all
Root canal work is not as bad as people think when compared to other dental procedures. Self-reporting of their dental health suggests that patients find the procedure no worse than other dental work which overturns the popular belief that root canal work is the most unpleasant dental treatment.
- New antibacterial fillings may combat recurring tooth decay
A new study finds potent antibacterial capabilities in novel dental restoratives, or filling materials.
- Temporomandibular Joint Disorder
Temporomandibular joint disorder (TMD) describes a variety of conditions that affect jaw muscles, temporomandibular joints and nerves associated with chronic facial pain. Symptoms may occur on one or both sides of the face, head or jaw, or develop after an injury. TMD affects more than twice as many women than men. Updated: November 2008
- What is Dental Amalgam (Silver Filling)?
What is Dental Amalgam (Silver Fillings)? Most people recognize dental amalgams as silver fillings. Dental amalgam is a mixture of mercury, silver, tin and copper. Mercury, which makes up about 50 percent of the compound, is used to bind the metals together and to provide a strong, hard, durable filling. After years of research, mercury has been found to be the only eleme...
- What is Orofacial Pain?
Orofacial pain includes a number of clinical problems involving the chewing (masticatory) muscles or temporomandibular joint. Problems can include temporomandibular joint discomfort; muscle spasms in the head, neck and jaw; migraines, cluster or frequent headaches; or pain with the teeth, face or jaw. You swallow approximately 2,000 times per day, which causes the upper and lower teeth t...
- What is a Composite Resin (White Filling)?
What is a Composite Resin (White Filling)? A composite filling is a tooth-colored plastic and glass mixture used to restore decayed teeth. Composites are also used for cosmetic improvements of the smile by changing the color of the teeth or reshaping disfigured teeth. How is a composite placed? Following preparation, the dentist ...
- Are You Biting Off More Than You Can Chew?
In our fast-paced lives, many of us may be eating in a hurry, taking giant bites of our food to get done quickly and on to the next task. Fast-food restaurants advertise giant burgers and sandwiches as a selling point, but often those super-sized delicacies are larger than a human mouth. Taking bites that are too big to chew could be bad for your jaw and teeth, says the Academy of Genera...
- The History of Dental Advances
The History of Dental Advances Many of the most common dental tools were used as early as the Stone Age. Thankfully, technology and continuing education have made going to the dentist a much more pleasant – and painless – experience. Here is a look at the history of dentistry's most common tools, and how they came to be vital components of our oral health care needs. Where did t...
- Check Menstrual Calendar for Tooth Extraction
Dry socket, the most common postoperative complication from tooth extractions, delays the normal healing process and results when the newly formed blood clot in the extraction site does not form correctly or is prematurely lost. This blood clot lays the foundation for new tissue and bone to develop over a two-month healing process. Updated: October 2008
- Headaches and Jaw Pain? Check Your Posture!
If you experience frequent headaches and pain in your lower jaw, check your posture and consult your dentist about temporomandibular disorder (TMD), recommends the Academy of General Dentistry (AGD), an organization of general dentists dedicated to continuing dental education. Poor posture places the spine in a position that causes stress to the jaw joint. When people slouch or hunch over...
- Men: Looking for a Better Job? Start by Visiting the Dentist
Men: Looking for a Better Job? Start by Visiting the Dentist An online poll of 289 general dentists and consumers confirms the traditional stereotype that men are less likely to visit the dentist than their female counterparts, according to the Academy of General Dentistry (AGD), an organization of general dentists dedicated to continuing dental education. Why? Nearly 45 percent...
- Why is Oral Health Important for Men?
Why is Oral Health Important for Men? Men are less likely than women to take care of their physical health and, according to surveys and studies, their oral health is equally ignored. Good oral health recently has been linked with longevity. Yet, one of the most common factors associated with infrequent dental checkups is just being male. Men are less likely than women to seek preventive ...
- What is Baby Bottle Tooth Decay?
What is Baby Bottle Tooth Decay? Baby bottle tooth decay is caused by the frequent and long-term exposure of a child's teeth to liquids containing sugars. Among these liquids are milk, formula, fruit juice, sodas and other sweetened drinks. The sugars in these liquids pool around the infant's teeth and gums, feeding the bacteria in plaque. Every time a child consumes a sugary liquid, acid...
- Pacifiers Have Negative and Positive Effects
Pacifiers Have Negative and Positive Effects It’s one of the hardest habits to break and can require a great deal of persuasion: Parents often struggle with weaning their child off of a pacifier. There is much debate regarding the use of pacifiers, but there is evidence to show that there are both pros and cons, according to a study in the January/February 2007 issue of Gene...
- Is My Child at Risk for Early Childhood Tooth Decay?
Is My Child at Risk for Early Childhood Tooth Decay? The average healthy adult visits the dentist twice a year. The average healthy 2-year-old has never been to the dentist. By kindergarten, 25 percent of children have never seen a dentist, yet dental decay is the single most common chronic childhood disease in America. The culprit? A combination of misinformation about when a c...
- When Should My Child First See a Dentist?
When Should My Child First See a Dentist? Your child's first visit to the dentist should happen before his or her first birthday. The general rule is six months after eruption of the first tooth. Taking your child to the dentist at a young age is the best way to prevent problems such as tooth decay, and can help parents learn how to clean their child's teeth and identify his or her fluori...
- How Do I Care for My Child's Baby Teeth?
How Do I Care for My Child’s Baby Teeth? Though you lose them early in life, your primary teeth, also called baby teeth, are essential in the development and placement of your permanent teeth. Primary teeth maintain the spaces where permanent teeth will erupt and help develop proper speech patterns that would otherwise be difficult; without maintenance of these spaces, crowding and misali...