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Here's a safe and effective way to whiten teeth
Photo: Thinkstock

Here's a safe and effective way to whiten teeth

19 Jul 2018 | 9:45 PM

WASHINGTON: In the age of social media, everyone wants to have perfect pearly whites. To get a brighter smile, consumers can opt for over the counter teeth-whitening treatments or a trip to the dentist to have their teeth bleached professionally. However, both types of treatments can harm teeth.

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Washington

In the age of social media, everyone wants to have perfect pearly whites. To get a brighter smile, consumers can opt for over the counter teeth-whitening treatments or a trip to the dentist to have their teeth bleached professionally. However, both types of treatments can harm teeth.

According to a recent study, researchers have now developed a new, less destructive method.

Teeth can become discoloured on their outer surfaces when people consume colored foods and drinks, such as coffee, tea or red wine.

As a result, many people turn to non-invasive whitening treatments that bleach the teeth. Currently, the most common bleaching agent is hydrogen peroxide, which steals electrons from the pigment molecules that cause teeth discoloration, and this process can be sped up by exposing teeth to blue light.

However, high concentrations of hydrogen peroxide can break down a tooth's enamel, causing sensitivity or cell death.

Therefore, Xiaolei Wang, Lan Liao, and colleagues wanted to see if a different blue-light-activated compound could be a safer, but still effective, alternative.

The team modified titanium dioxide nanoparticles with polydopamine (nano-TiO2@PDA) so that they could be activated with blue light. After four hours of treatment, the whitening level was similar to that obtained with hydrogen-peroxide-based agents.

The group noted that no significant enamel damage was found on the surface of the tooth, and the treatment was significantly less cytotoxic than hydrogen peroxide.

The full findings are present in the journal- ACS Biomaterials Science & Engineering. — ANI

Eat fish for a longer life!

Eat fish for a longer life!

19 Jul 2018 | 1:15 PM

WASHINGTON DC: Did you know! Consuming fish could prolong your life.

Sugar improves memory in older adults

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19 Jul 2018 | 1:07 PM

NEW DELHI: Turns out, increasing blood sugar levels improves memory and performance in older adults and makes them feel happier during a task.

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WASHINGTON DC: Therapy dogs are effective in reducing the symptoms of attention deficit/hyperactivity disorder (ADHD) in children, finds a study.

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Eating salamis, hot dogs can lead to manic episodes

18 Jul 2018 | 1:31 PM

WASHINGTON: Chemicals in processed meat snacks, such as salamis and hot dogs, can contribute to mania, an abnormal mood state characterised by hyperactivity, euphoria and insomnia.

Magnetised wire can detect cancer early

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17 Jul 2018 | 6:16 PM

BOSTON: A magnetic wire used to snag hard-to-capture tumour cells from blood vessels could prove to be a swift and effective tactic for early cancer detection, scientists say.

Childhood infections may affect school performance

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17 Jul 2018 | 12:30 PM

WASHINGTON DC: Turns out, severe infections that have led to hospitalisation during childhood are associated with lower school achievement in adolescence.

Obesity alone does not increase early death risk: Study

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15 Jul 2018 | 4:31 PM

TORONTO: Obesity alone does not increase risk of early death, say scientists who have found that obese patients with no other metabolic risk factors, do not have an increased rate of mortality.

Testosterone treatment can bring new hope for cancer patients

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15 Jul 2018 | 11:43 AM

NEW YORK: Treatment with hormone testosterone could be effective at combating a condition of loss of body mass in cancer patients and improving the quality of life, say researchers.

Herpes virus may up Alzheimer’s risk

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15 Jul 2018 | 11:31 AM

LONDON: Herpes virus can increase the likelihood of developing Alzheimer’s disease, according to a study which also found that antiviral drugs can significantly reduce the risk of the neurodegenrative disorder.

Mediterranean diet may help reduce bone loss: Study

Mediterranean diet may help reduce bone loss: Study

11 Jul 2018 | 12:13 PM

LONDON: Eating a Mediterranean-type diet - rich in fruit, vegetables, nuts, unrefined cereals, olive oil, and fish - could reduce bone loss in people with osteoporosis, a study claims.

'Teens drinking regularly face worse alcohol problems than adults'

'Teens drinking regularly face worse alcohol problems than adults'

11 Jul 2018 | 11:34 AM

SYDNEY: Teens aged under 17 who drink alcohol weekly are three times more likely to binge drink and be dependent on alcohol as adults compared with their peers who don't drink, an Australian-led research said on Wednesday.

Living without AC can lower students’ cognitive abilities

11 Jul 2018 | 11:28 AM

BOSTON: Living in dormitories without air-conditioning (AC) during a heat wave can lower students’ ability to focus, harm their working memory and increase reaction times, a Harvard study has found.

Better eye-to-hand coordination could make kids smarter

11 Jul 2018 | 11:24 AM

LONDON: Young children with better eye-to-hand coordination are more likely to achieve higher scores for reading, writing and maths, according to a study.

Spending time outside may boost your health: Study

Spending time outside may boost your health: Study

09 Jul 2018 | 1:08 PM

LONDON: Living close to nature and spending time outside may reduce the risk of type-2 diabetes, cardiovascular disease, premature death, preterm birth, and stress, a study claims.

New way to develop medicines free of side effects

New way to develop medicines free of side effects

08 Jul 2018 | 4:54 PM

WASHINGTON: A new technique for precisely targeting molecules within cells may pave the way for medicines that are free of side effects, scientists say.

Savoury foods may help promote healthy eating

Savoury foods may help promote healthy eating

08 Jul 2018 | 4:39 PM

BOSTON: Consuming savoury foods can cause subtle changes in the brain that promote healthy eating behaviours and food choices, especially in women at risk of obesity, a study has found.

Gene linked to job-related exhaustion may up Alzheimer's risk

Gene linked to job-related exhaustion may up Alzheimer's risk

08 Jul 2018 | 4:38 PM

LONDON: A gene mutation, known to reduce tolerance to the ill effects of shift work in working age population, may also increase the risk of Alzheimer's disease in the elderly, a study has found.

Anxiety, depression may worsen your heart health

Anxiety, depression may worsen your heart health

08 Jul 2018 | 12:09 PM

NEW YORK: Symptoms of depression and anxiety are present in about one-third of patients with heart failure and these patients are at a higher risk of progressive heart diseases and other adverse outcomes, a new study suggests.

Obesity poses risk to traumatic brain injury recovery

Obesity poses risk to traumatic brain injury recovery

07 Jul 2018 | 12:25 PM

WASHINGTON DC: Being overweight or obese was strongly associated with several chronic health conditions, including high blood pressure, heart failure, and diabetes. A study has now found another problem that stems out of obesity.

Brain circuit behind feeling hungry discovered

Brain circuit behind feeling hungry discovered

06 Jul 2018 | 7:01 PM

SINGAPORE: A particular subset of neurons located in an enigmatic region of the hypothalamus in the brain plays a central role in regulating feeding and body weight in mice, a study has found.

Can oxygen therapy prevent dementia in lung disease patients?

Can oxygen therapy prevent dementia in lung disease patients?

06 Jul 2018 | 11:51 AM

WASHINGTON DC: Oxygen therapy can help in fighting dementia in individuals with lung disease, according to a study.

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