Publisher's Synopsis
Knowing that brushing your teeth is not enough! Only by correctly understanding the causes of tooth decay and preventing bacterial attacks can you have white and shiny teeth! The works of well-known picture book writer Hasegawa Yoshihito Swedish University Honorary Doctor Takashi Kumagaya approved and recommended the righteous husband who does not like to brush his teeth. Recently, an unhappy incident happened in the class. The girls in the class liked it, but because of her big black teeth, she was rejected by the classmates. Dad also looked terrible because of his periodontal disease.
