Walk down the toothpaste aisle at your typical drugstore and you’ll see a range of products that promise to whiten your teeth. Whitening toothpaste, whitening strips, a whitening gel that you can paint on your teeth with a cotton swab or use in a mouth tray, a two-step “daily cleaning and whitening system,” and more. “I see a lot more attention on pretty smiles,” says Clifton Carey, a chemist at the University of Colorado’s School of Dental Medicine. Tooth whitening, in particular, is “a big thing these days. A lot of sellers and a lot of customers.”
The products at the drugstore all have essentially the same whitening ingredient – the bleaching agent peroxide. If you go to your dentist for a professional tooth whitening, they’ll use a more concentrated peroxide product.
With the in-office procedure, “you get a lot of whitening very quickly, but it requires expertise,” says Matthew Messina, a practicing dentist at the Ohio State University College of Dentistry and a spokesman for the American Dental Association. With such a high-powered bleaching agent, he says, “the dentist has to protect the gums.”
The over-the-counter products are weaker. That means less active whitening but also less risk to the gums, should the whitening agent come in contact. “All of the products are safe if used as directed,” Messina says. Still, they can increase sensitivity of teeth and they can irritate gum tissue. “Anything that doesn’t feel right, you should see your dentist.”
Tooth whitening is best done in a “healthy mouth condition,” Messina says. “Have a thorough exam, make sure your teeth are clean and that plaque and tartar have been removed.” Also, be aware that tooth whitening doesn’t work on crowns or most fillings.
Professional whitening, which will be immediate and last for years, might cost $500 or more and is not generally covered by dental insurance. Products to use at home usually require multiple applications over a week or two, will have a gradual and lesser whitening effect, and will not last as long. Whitening strips can cost as little as $25.
“The do-it-yourself products can be used as a booster, after a professional treatment, to keep the teeth white,” Carey says. “Dentists often recommend this.”
How do these products work? “It’s a surface-type bleach,” Carey says, working on stains that are bonded to tooth enamel. “Bleach is a chemical that breaks those bonds,” Carey says. The staining compounds might remain, but the bleach turns them clear.
The concentrated product that dentists use also dehydrate the tooth somewhat. “That’s the immediate color change – bleaching plus dehydration,” Carey says. As the surface of the tooth rehydrates over the next few weeks, people may notice their teeth’s whiteness slip back a couple of shades.
A quick bit of tooth anatomy: Enamel is the thin hard outer layer of the tooth; dentin is the next layer in and is less dense than enamel. In the middle is the pulp, which is the soft tissue that holds the nerve center.
“Enamel is what you’re bleaching,” Carey says. “It’s really thin near the gum line. If you have receding gums, it exposes your root tissues.” Dentists try to avoid applying the concentrated product on or near the dentin.
Dentin comes into play for aesthetics as well, because it’s got a naturally yellowish hue. As people age, their enamel can become thinner, a result of decades of wear and tear. The thinner the enamel, the more likely the yellowish dentin shows through. That’s why older people often have yellowed teeth. Bleaching products won’t help in this situation because they don’t affect the dentin.
There are a few other discolorations that whitening procedures cannot change. If you took tetracycline as a kid, say for an ear infection, you might have antibiotic staining of the teeth. Or if your teeth suffered trauma when you were young and your enamel was still forming, whitening won’t work. Dentists refer to these discolorations as intrinsic stains.
If you spend a little time searching the Web, you’ll find plenty of ideas about natural methods of tooth whitening.
Use lemon juice or apple cider vinegar as a mouthwash? Scrub your teeth with an activated charcoal product?
Messina says those techniques come with risks. The acid of lemon juice can erode the enamel on your teeth, and charcoal is an abrasive that can wear it away. “Your teeth will be whiter initially, but as the enamel wears away, you’ll see more dentin,” Messina says. “That yellowish color will show through.”
Can you prevent your teeth from becoming stained in the first place? Good practices mean avoiding staining substances. The most egregious are red wine, coffee and tobacco residue. Other foods on the staining list are tea, tomato sauce and balsamic vinegar. If the thought of avoiding any of those makes you want to cry, Messina advises rinsing with water after eating. Brushing your teeth is even better.
And, of course, the dentists advise good oral hygiene: regular brushing, flossing and checkups.
Never ignore the common signs of A Heart Attack in Women
Every person knows the common signs of Heart attack is chest pain. It’s not like how it is shown in movies where a man is shown gasping for breath, clutches his chest and falls on the ground. When it comes to real life, the symptoms of heart attack are more than just pain in the chest. Yes, chest pain is a symptom of heart attack, but there are other subtle signs of cardiovascular problems, which are important to know. As per studies, women do mostly feel chest pain when they suffer from a cardinal problem, there are few other signs you should be cautious about. If these signs are overlooked then it can even turn fatal.
The common signs of a heart attack one should not ignore in women
- Do you feel uncomfortable pressure in your chest?
One of the most common signs of a Heart attack in women. If you are feeling pressure and tightness around your chest, then ask for help. Pain can happen anywhere in the chest, it is not necessary to be the middle of the heart. Do not brush off the situation just because the pain is on the left side.
- Breathing Difficulty
Uneasiness and difficulty in breathing is another sign of heart attack in Women. If you are not able to catch your breath and move around even a little bit, then it is an indicator that something is not right with your heart.
Sweating on a sunny day or due to intense workout is normal, but if it is random then you should immediately call someone for help. Profuse and sudden sweating can be a sign of a cardiovascular problem. This sign is easily confused with night sweats or hot flashes, which is common with age Overlooking this can be dangerous for you.
- pain experienced in both the arms
It is not necessary that pain be experienced only in the chest or in the middle of the heart. At times it can even be on the left or right arm, or even in the upper abdomen. It is important to note that any type of pain above the waist could be due to a heart problem. The pain could be irregular or intense
- The most common sign Dizziness
Nausea and vomiting are common symptoms in women. These signs of a heart attack are mostly confused with food poisioned or gastrointestinal issues. But if you are experiencing nausea and vomiting along with pain in the upper part of the body, then it is time immediately rush to the hospital.
One feels very exhausted, but just like other signs of heart attack, if you feel excessively tired than usual then you get yourself checked. You would actually feel overwhelmed and would not be able to perform any other activity. This sign is often mistaken for anxiety. If you suddenly feel fatigued and uneasy then speak to your practitioner.
Cutting screen time may reverse sleep problems in teens
Limiting exposure to blue-light emitting devices such as phones and laptops in the evening for just a week can help teenagers improve their sleep quality and reduce symptoms of fatigue, lack of concentration and bad mood, a study has found.
Recent studies have indicated that exposure to too much evening light, particularly the blue light emitted from screens on smartphones, tablets and computers can affect the brain’s clock and the production of the sleep hormone melatonin, resulting in disrupted sleep time and quality.
The lack of sleep does not just cause immediate symptoms of tiredness and poor concentration but can also increase the risk of more serious long-term health issues such as obesity, diabetes and heart disease.
Other studies have suggested that sleep deprivation related to screen time may affect children and adolescents more than adults, but no studies have fully investigated how real-life exposure is affecting sleep in adolescents at home and whether it can be reversed.
Researchers from Netherlands Institute of Neuroscience, the Amsterdam UMC and the Dutch National Institute for Public Health and the Environment, investigated the effects of blue light exposure on adolescents at home.
Those who had more than four hours per day of screen time had on average 30 minutes later sleep onset and wake up times than those who recorded less than one hour per day of screen time, as well as more symptoms of sleep loss.
The team conducted a randomised controlled trial to assess the effects of blocking blue light with glasses and no screen time during the evening on the sleep pattern of 25 frequent users.
Both blocking blue light with glasses and screen abstinence resulted in sleep onset and wake up times occurring 20 minutes earlier, and a reduction in reported symptoms of sleep loss in participants, after just one week.
“Adolescents increasingly spend more time on devices with screens and sleep complaints are frequent in this age group,” said Dirk Jan Stenvers from the Amsterdam UMC.
“Here we show very simply that these sleep complaints can be easily reversed by minimising evening screen use or exposure to blue light,” Stenvers said.
“Based on our data, it is likely that adolescent sleep complaints and delayed sleep onset are at least partly mediated by blue light from screens,” he said.
Common chemicals can increase risk of metabolic disorders
Do you know that your everyday exposure to everyday harmful chemicals can land you into serious trouble?
A recent study has found that people exposed to chemicals called Phthalates, increasing the risk of metabolic disorders. The study was discussed in the meeting, ‘ECE 2019’. Researchers found a correlation between levels of phthalate exposure and markers of impaired liver function, which are indicators of increased risk of obesity, diabetes and heart disease.
These findings suggest that more actions may need to be taken to reduce people’s exposure to these potentially harmful, yet commonly used chemicals. Phthalates are common additives used in manufacturing to produce plastics and they can be found in numerous everyday items including milk, bottled water, instant coffee, perfume, makeup, shampoo, toys and food packaging.
Exposure to endocrine-disrupting chemicals has previously been implicated in causing serious harm to fertility and development, as well as increased obesity risk in rodents and people.
However, no studies have directly investigated how Phthalate exposure is associated with obesity and metabolism. In this study, Professor Milica Medi Stojanoska, one of the researchers correlated the levels of Phthalate absorbed by people with their body weight, type 2 diabetes incidence and markers of impaired liver and metabolic function.
Higher exposure to the chemical was associated with increased markers of liver damage, insulin resistance and cholesterol in people with obesity and diabetes.
Prof Stojanoska says, “Although a small association study, these findings suggest that not only do phthalates alter metabolism to increase the risk of obesity and diabetes but that they are also causing toxic damage to the liver.”
Prof Stojanoska’s research is now looking at the effects of endocrine-disrupting chemicals on human health in adults, adolescents and babies.
“We need to inform people about the potential adverse effects of endocrine disruptors on their health and look at ways to minimise our contact with these harmful chemicals,” adds the professor.