Toothbrush
A handheld tool for cleaning teeth, gums, and tongue.
A toothbrush is a tool for cleaning the teeth, gums, and tongue. It has a handle with a head of tightly packed bristles, where toothpaste is applied. The handle is designed to reach difficult spots in the mouth. Toothbrushes come in various sizes, shapes, and bristle textures. Dentists generally advise using soft bristles, as harder ones can harm enamel or irritate gums. They are meant to be used alongside other tools—like floss, interdental brushes, or toothpicks—that clean between teeth where bristles cannot reach.
Because many common toothpaste ingredients are dangerous if swallowed in large amounts, toothpaste should be spat out. Brushing usually happens at a sink in a bathroom or kitchen. Afterward, the toothbrush is rinsed to remove debris and dried to limit bacterial growth (and, for wooden handles, mold). Some toothbrushes have plant-based handles, often bamboo, but most are made of cheap plastic. This plastic contributes heavily to pollution: over one billion toothbrushes are thrown into landfills each year in the United States alone. Bristles are commonly made of nylon (which is not biodegradable but may be recyclable), bamboo viscose, or boar bristles.
**History**
**Precursors**
Before the toothbrush existed, people used various oral hygiene methods. Excavations have uncovered tree twigs, bird feathers, animal bones, and porcupine quills. The direct forerunner was the chew stick—a twig with a frayed end for brushing and a pointed end for picking teeth. The oldest chew sticks date to 3500 BC in Sumer (southern Mesopotamia), a 3000 BC Egyptian tomb, and Chinese records from 1600 BC. The Chinese monk Yijing (635–713 CE) described the Indian practice of using tooth wood: each morning, a monk chewed a piece of tooth wood to brush his teeth and scrape his tongue. The wood, called *dantakastha* in Sanskrit, was twelve finger-widths long (at least eight) and about the size of a little finger. Greeks and Romans used toothpicks, and similar twigs have been found in Qin dynasty tombs. Chew sticks are still common in Africa and the rural southern United States. In the Islamic world, the miswak (chewing stick) is considered pious and is used before each of the five daily prayers. Muslims have used it since the 7th century. In India, neem twigs, called datun, have been used since ancient times and continue today, though not very widely; neem helps keep teet
- first_bristle_toothbrush
- China, Tang dynasty (619–907 CE)
- earliest_chew_stick
- Sumer, 3500 BC
- first_mass_production
- UK, 1780 by William Addis
- first_patent
- H.N. Wadsworth, USA, 1857
- first_nylon_bristles
- DuPont, 1938
- first_electric_toothbrush
- Switzerland, 1954
- annual_discard_in_US
- Over 1 billion toothbrushes
Lore & Background
The predecessor of the toothbrush is the chew stick, with the earliest examples discovered in Sumer in 3500 BC, an Egyptian tomb from 3000 BC, and Chinese records from 1600 BC. The first bristle toothbrush resembling the modern one was found in China during the Tang dynasty (619–907), using hog bristles attached to a bamboo or bone handle. In 1223, Japanese Zen master Dōgen Kigen recorded monks in China using brushes made of horsetail hairs attached to an oxbone handle. The bristle toothbrush spread to Europe in the 17th century, where Europeans preferred softer horsehair bristles over the firmer hog bristles from China.
In the UK, William Addis is believed to have made the first mass-produced toothbrush in 1780 after being jailed for causing a riot. While in prison, he drilled holes into a small bone and tied tufts of bristles obtained from a guard through the holes, sealing them with glue. After his release, he started a business manufacturing toothbrushes, which remained in family ownership until 1996. By 1840, toothbrushes were mass-produced in Britain, France, Germany, and Japan. The first patent for a toothbrush was granted to H.N. Wadsworth in 1857 in the United States, but mass production there did not start until 1885. During the 1900s, celluloid gradually replaced bone handles, and natural animal bristles were replaced by synthetic nylon fibers by DuPont in 1938. The first electric toothbrush, the Broxodent, was invented in Switzerland in 1954.
Reader's Guide
The toothbrush is a cornerstone of modern oral hygiene, evolving from ancient chew sticks to sophisticated electric devices. Its significance lies in its role in preventing dental disease and maintaining oral health, as recommended by dentists who advise soft bristles to avoid enamel damage and gum irritation. The toothbrush's design has been refined over centuries, from hog bristles in Tang dynasty China to nylon bristles and ergonomic handles in the 20th century. The introduction of the electric toothbrush in 1954 and subsequent innovations like the angled head of the Reach toothbrush in 1977 and curved bristles of the Collis Curve in 1978 aimed to improve cleaning effectiveness. Despite its ubiquity, the toothbrush also poses environmental challenges: most are made of cheap plastic, and over 1 billion are discarded into landfills annually in the United States alone. The toothbrush's legacy is reflected in its selection as the number one invention Americans could not live without in 2003, according to the Lemelson-MIT Invention Index.
Did You Know?
- The earliest chew sticks, predecessors of the toothbrush, were discovered in Sumer in 3500 BC.
- The first bristle toothbrush resembling the modern one was used during the Tang dynasty (619–907) in China, with hog bristles attached to a bamboo or bone handle.
- William Addis is believed to have made the first mass-produced toothbrush in 1780 while in prison, using a bone and bristles from a guard.
- The first nylon bristle toothbrush went on sale on February 24, 1938, after DuPont introduced synthetic fibers.
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