toothbrush
toothbrush, ์นซ์
A toothbrush is a hygiene product used to clean teeth. It's recommended to use it at least three times a day.
These days, electric toothbrushes and eco-friendly bamboo toothbrushes are also widely used. Some toothbrushes even have bristles that change color to indicate when it's time for a replacement.
์นซ์์ ์น์๋ฅผ ๊นจ๋์ด ๋ฆ๋ ๋ฐ ์ฌ์ฉํ๋ ์์์ฉํ์ด์์. ํ๋ฃจ์ ์ธ ๋ฒ ์ด์ ์ฌ์ฉํ๋ ๊ฒ์ด ์ข์ฃ .
์์ฆ์ ์ ๋์นซ์์ด๋ ์นํ๊ฒฝ ๋๋๋ฌด์นซ์๋ ๋ง์ด ์ฌ์ฉํด์. ์นซ์๋ชจ์ ์์ด ๋ณํ๋ฉด ๊ต์ฒด ์๊ธฐ๋ฅผ ์๋ ค์ฃผ๋ ์ ํ๋ ์์ด์.
The first toothbrush is said to have been made from twigs in Babylonia around 3500 BC. Modern nylon bristles were developed in 1938, which brought about a revolutionary advancement in oral hygiene.
Recently, smart toothbrushes incorporating IoT technology have emerged. They even have functions to analyze brushing patterns and guide users on the correct way to brush. Also, refillable toothbrush heads and biodegradable toothbrushes are gaining popularity among environmentally conscious consumers.