Around 1844, the first three-row bristle toothbrush was invented.
Prior to the 1840s, toothbrushes had only one row of bristles. With the benefit of being able to cover a larger surface area in mind, toothbrush makers began introducing changes to the standard toothbrush design in about 1844. Three rows of bristles would later become the standard for most commercial toothbrushes, proving to be more effective than the previous single row.
Related Facts
Reduce Carbon Dioxide Emissions
Airplane air is significantly drier than any you might experience on earth.
There exists a hybrid game of chess and boxing that is known as Chess Boxing.
Ulcers spread to further areas of the human body.
Muhamad Ali Is the Only Person Whose Hollywood Walk of Fame Star Is Not on the Ground
Pigeons fly quickly.
"The Land Continues to Move"
In Rio, street art is legal.
Not all spider bites are dangerous.
Antique China is in high demand.
Gummy Bears Are A German Invention
Arabic in Tunisia
Age has an effect on an individual's rate of growth as well.
Asthma Is Not All Wheezing.
JANE AUSTEN’S REPUTATION GREW AFTER HER DEATH.
Did you Know? Malaysia has the world’s oldest tropical rainforest
A person will shed around 40 pounds of skin in a single lifetime.
What is the manufacturing process for plant-based milk?
The European Union's First Planned Capital City
The summer is the period of the year when most births occur.
Barbie was created by an engineer.
Mirrors serve as the primary optical system.
The Dutch invented gin
Anxiety Can Cause Cold Hands And Feet
Not all Hermit Crabs make use of discarded seashells as temporary dwellings.