Electric Toothbrush
Toothbrushes – Baulkham Hills Dentist
Toothbrushes have remained a staple tool for cleaning teeth. They are simple and effective, and we are foolish if we neglect to use them.
The basic concept of the toothbrush remained the same up until the mid-20th century. There were improvements, with nylon bristles replacing animal fibres, but the devices were manual brushes on a short handle.
Electric tooth brushes appeared in the 20th century. Early models were bulky and mains powered. This made them difficult to use, all the more so because they were initially designed for people with limited dexterity – those with arthritis or hand injuries. Toothbrushes in the mind 1960 were battery powered, and proved to be more practical.
Electric Toothbrushes – Winston Hills Dentist
Electric toothbrushes do most of the cleaning action for us. They clean at least as well as a regular manual toothbrush, but with less effort.
There are several type of electric toothbrush.
Regular electric toothbrushes, also called sonic toothbrushes, have a strong physical movement of a few hundred times per second. They clean by physically rubbing plaque, bacteria and food debris off the tooth surface.
Some of the toothbrushes use a side-to-side action, others have oscillating heads. Or alternate rows of bristles may move back and forth in opposing directions. It is matter of personal preference in choosing a particular type of cleaning action, though some type of brush may clean better in some circumstances. A back and forth actions is probably better for braces than an oscillating head.
A few electric toothbrushes have interchangeable heads, so one can vary the type of cleaning actions according to the head.
Ultrasonic Toothbrushes use very rapid vibrations to clean teeth. The term ’ultrasonic’ refers to the fact that the vibration is higher than human hearing.
The vibration of these ultrasonic toothbrushes seems slight compared to other electric toothbrushes, but this is because they work on a different principle. The rapid vibration above 1 MHz will cause bacteria and plaque to break up and not adhere to the tooth surface. They can achieve this even if the toothbrush does not directly contact the plaque. Anything within half a centimetre of the ultrasonic brush head will benefit from the ultrasonic vibrations.
Castle Hill Dental
Electric toothbrushes have a positive psychological value – they tend to encourage people to brush their teeth because people like the novelty of the device. This is especially true of children.
Timer lights on the brush, making sure that we clean for at least 2 minutes, and a good feature.
Electric Toothbrush
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