Koukoueisei

A young boy neglects his daily toothbrushing routine, unaware of the consequences lurking inside his mouth. As he goes about his day, the bacteria in his teeth begin to multiply, forming plaque and leading to the early stages of tooth decay. The film visually illustrates how cavities develop, showing the gradual damage caused by poor oral hygiene.

To correct his mistake, the boy learns proper brushing techniques and the importance of regular dental care. With guidance, he adopts a healthier routine, using a toothbrush and other products to keep his teeth clean. The short emphasizes prevention over treatment, encouraging viewers to take simple steps to avoid painful dental problems.

Created as an educational tool, this silent film uses clear, straightforward imagery to deliver its message. It serves as an early example of animation used for public health awareness, reminding audiences that small habits can make a big difference in maintaining a bright, healthy smile.