Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:

iF SOCIAL IMPACT PRIZE (free of charge)

Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

The replacement time / electric toothbrush

The replacement time

ELASTICITY OF TOOTHBRUSH AND REMOVAL OF PLAQUE DECLINES WHEN THE TOOTHBRUSH IS USED FOR 2~3 MONTHS. WHEN A TOOTHBRUSH IS USED FOR MORE THAN 3 MONTHS, IT BECOMES FULL WITH BACTERIA AND GERMS. PEOPLE BECOME LAZY TO CHANGE THE TOOTHBRUSH PERIODICALLY AND DON'T REALIZE HOW SERIOUS AND HARMFUL IT IS TO USE A TOOTHBRUSH THAT HAS BEEN USED FOR MORE THAN 3 MONTHS. THIS PRODUCT LETS YOU KNOW WHEN TO CHANGE THE TOOTHBRUSH HEAD BY CHANGING COLOR AND PATTERN. THE TOOTHBRUSH CHANGES TO AN APPETITE SUPPRESSANT COLOR DUE TO PATTERN AND BACTERIA AND WILL MAKE YOU CHANGE TO A NEW TOOTHBRUSH.

University

Yong In University

Yong In University
Yong In, South Korea

Go to profile
Design

Yongin University

Yongin University
Yong-in, South Korea

Tae il LIM

Design

Yong In University

Yong In University
Yong In, South Korea

Na Hyun Kim

Go to profile