Toothbrush

The toothbrush is an oral hygiene instrument used to clean the teeth and gums that consists of a head of tightly clustered bristles mounted on a handle, which facilitates the cleansing of hard-to-reach areas of the mouth.

Toothpaste, which often contains fluoride, is commonly used in conjunction with a toothbrush to increase the effectiveness of tooth brushing. Toothbrushes are available with different bristle textures, sizes and forms. Most dentists recommend using a toothbrush labelled "soft", since hard bristled toothbrushes can damage tooth enamel and irritate the gums. The predecessor of the toothbrush, the chew stick, first appeared in Egypt and Babylonia, and the earliest bristle toothbrush, the direct predecessor to the modern toothbrush, originated in China. Toothbrushes were introduced to Europe through merchants and travelers in East Asia by the 17th century.DuPont introduced the nylon toothbrush in the 1930s.

History

A variety of oral hygiene measures have been used since before recorded history prior to the toothbrush. This has been verified by various excavations done all over the world, in which chew sticks, tree twigs, bird feathers, animal bones and porcupine quills were recovered.

DNCE

DNCE is an American pop rock band that formed in 2015. The group consists of members Joe Jonas, Jack Lawless, Cole Whittle, and JinJoo Lee. The group signed with Republic Records, who released their debut single "Cake by the Ocean" in 2015. The song had moderate success in various territories, reaching the upper half of the Billboard Hot 100 chart. Their debut extended play, SWAAY (2015), received a generally positive reception upon release. They are also nominated for Favorite New Artist for Kid's Choice Awards 2016.

Career

Joe Jonas first rose to prominence as a member of the Jonas Brothers, a pop-rock band that had much success with music and acting. The group released four studio albums from 2006 to 2009, selling over 17 million albums worldwide. Jonas released a solo debut album in 2010 to a mixed critical and commercial performance. Despite the Jonas Brothers recording their fifth studio album in 2013, the project went unreleased and the band officially ended.Jack Lawless first met Jonas when he played the drums for the Jonas Brothers' Marvelous Party Tour (2007). Lawless and Jonas formed a close friendship, with Lawless continuing to perform with the band on subsequent tours. The pair eventually lived together for a period of time, according to Jonas. In 2010, Lawless became the drummer for alternative rock band Ocean Grove; the group released their debut extended play in 2011. Cole Whittle rose to fame as the bass player for Semi Precious Weapons. The band released three studio albums during their run, with their final release coming in 2014. JinJoo Lee, much like Lawless, had previously toured with acts such as the Jonas Brothers, playing the guitar. She was a member of CeeLo Green's touring band from 2010 to 2011, and later worked with Charli XCX.