Toothbrushes

the brush

Bristles have been used in various tools and products, most notably in brushes for cleaning, painting, and grooming. Common examples include toothbrushes, paintbrushes, and brooms. Additionally, bristles are often used in household items, such as pet brushes and hairbrushes, for their effectiveness in removing dirt and detangling. Historically, animal hair, such as from hogs or horses, was commonly used for bristle production.

Rite Aid

Yes, Ultraviolet (UV) Sanitizers for pools do work. They use the same wavelength of UV light (254nm) that has been used worldwide for over 60 years to purify drinking water. For a more specific explanation of how they work see below.

The UV254 Sanitizer uses Ultraviolet Technology at a wavelength of 254 nanometers (nm) which does not produce ozone. Basically, ultraviolet light (UV) reacts with the DNA and RNA of living things to destroy the activity of these important molecules.

In particular, the UV254 Sanitizer produces ultraviolet radiation at a particular wavelength (254 nanometers or 253.7 more precisely) which is a good match for inactivating the DNA or RNA of pathogens - the various kinds of microorganisms that do us harm.

In a bit more detail, physics tells us that ultraviolet radiation is a form of electromagnetic radiation. One basic characteristic of this radiation is its wavelength which is often measured in nanometers (one billionth of a meter, abbreviated nm). The different wavelengths of radiation form what we call the electromagnetic spectrum. The spectrum can be pictured as consisting of visible light waves in the middle with infrared, microwave and radio waves having longer wavelengths and ultraviolet, x-ray and gamma rays having shorter wavelengths.

The visible light we see with our eyes varies from the violet with a wavelength just above 400 nm to red which has a wavelength up to 700 nm. Ultraviolet is called just that - it's beyond violet with wavelengths below what we can see. There is a relationship between the wavelength of light and its energy … shorter wavelengths have more energy. That's just a fact that we won't get into here.

The ultraviolet part of the spectrum is conveniently labeled divided into different parts labeled UVA (wavelengths from 400 down to 315 nm), UVB (315-280 nm), UVC (280-200 nm) and extreme UV (below 200 nm). This means that the shorter wavelength UVC rays have a higher energy than the UVA or UVB radiation. The UV254 Sanitizer works right in this higher UVC range.

Now consider a bit of biology. Living things are made up of complex molecules. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are two of these. They are involved in providing the genetic code and important cell protein manufacture essential to living things. A molecule, including DNA and RNA, is a string of atoms held together by what scientists call chemical bonds. Each chemical bond is associated with a particular energy.

It is an accident of evolution or just bad luck but the energy of some chemical bonds in DNA and RNA matches that of the UVC radiation. The energy from the radiation is just right to break some of the chemical bonds. It's like breaking a twig - we put our energy into bending the twig until it breaks.

The result is that the microorganisms can not reproduce and may be killed. The UV254 Sanitizer uses radiation at 254 nm wavelength, right in the middle of the UVC part of the spectrum so is effective in inactivating the wide variety of pathogens that are important to pool owners.

A modern toothbrush is made up of two parts, the handle and the bristles.

The handle is made up of plastic and sometimes plastic and rubber with small hole at one end that hold the bristles.

The bristles are made up of short strands of nylon and are held in their place in hole in the handle by small pieces of corrosion resistant stainless steel staples.

nothing

Maybe ask for an extra, or maybe just don't brush your teeth at all! Hey, it's just for 1 night. Not gonna harm you if you don't brush your teeth for only a night, is it?

ORRRRR! You can take a paper towel and damp it, then put toothpaste on it and scrub your teeth. That will work better ahahah

Toothbrush (1938). Then nylon stockings (1940). Shortly after these two were made almost all nylon production was diverted to parachutes and parachute cord for use during WW2.

nope

"Heat will most definitely kill germs but freezing them won't do the trick- in the same way a frozen fish could spring back to life when put back into water. You could just be preserving them. Enzymes are at work in germs and these are denatured by extreme heat but cooling them might only be slowing them down. Freezing does prevent their multiplication if the temp is at 0°F or less. When thawed, the surviving organisms can multiply again."

No.

Brushing the top of your tongue will not create any permanent change in the texture of your tongue. The tongue heals rapidly.

Two.

They like rubber on your toothbrush and they also like toothpaste.

Be sure to rinse/clean your toothbrush at all times and get a new one every 1-3 months - hygiene reasons.

The identity of the person who first invented the toothbrush is not known. Various forms of tooth cleaning have been used for thousands of years.

The Chinese have used the bristle toothbrush since 1498, during the reign of the Hongzhi Emperor (r. 1487--1505) of the Ming Dynasty. The idea is thought to have been brought to Europe by Europeans who had traveled to China.

The earliest identified use of the word "toothbrush" in English was in the autobiography of Anthony Wood, who wrote in 1690 that he had bought a toothbrush from J. Barret.

Mass production of the toothbrush began in 1780 when they were sold by a William Addis of Clerkenwald, England. The modern toothbrush uses nylon fibers instead of pig, boar or badger bristles, and was introduced in 1938 by the DuPont Company.

Nylon

The cost of replacement heads for the Sonicare toothbrush varies based on the number purchased and the site of purchase. For example, a two pack of replacement heads can be purchased at Target for $24.30.

It would be difficult to imagine a better method of contracting the disease. There are methods that are more fun, though.

Yes. However if you make sure the toothbrush completely air dries between uses the bacterial growth will be limited to safe levels.

The frequency of the toothbrush is 90 cycles per second. Its period is half of a second.

because they r good

Helpful Friction.

Nylon toothbrush is the problem, the problem is not pig skin

that smell will never go away. i used to throw up almost every time i smelled mine. i also have this problem! my orthodontist said that scrubbing it with dish soap and a different brush instead of toothpaste and toothbrush cleans it better. i haven't tried this myself, but maybe it'll help you!