Taking good care of the teeth is important because:
strong, healthy teeth are needed to chew and digest food well.
painful cavities (holes in the teeth caused by decay) and sore gums can be prevented by good tooth care.
decayed or rotten teeth caused by lack of cleanliness can lead to serious infections that may affect other parts of the body.
people who do not care for their teeth are more likely to lose them when they get old.
Teeth should be cleaned carefully twice a day. This removes the germs that cause decay and tooth loss. Clean the surface of all front and back teeth, then clean between the teeth and under the gums. Use a soft brush, tooth stick, or finger wrapped with a piece of rough cloth. Toothpaste is good but not necessary. Salt, baking soda, or even plain, clean water will also work.
Sources
Burns, A. A., Niemann, S., Lovich, R., Maxwell, J., & Shapiro, K. (2014). Where women have no doctor: A health guide for women. Hesperian Foundation.