1. The brush head material has excellent physiological and chemical inertness, does not oxidize, degrade, or deform.
　　2. The bristles are soft, and the gums and enamel are not damaged when brushing, and there is no bleeding from the gums and the enamel is not damaged.
　　3. Massage the gums to promote blood circulation in the gum tissue and prevent periodontal disease and gum atrophy.
　　 4. Silica gel is non-toxic, tasteless, non-water-absorbing, its water absorption is less than 0.015%, high air permeability, and no bacteria breeding.
　　5. The brush head has high temperature resistance, ≤260℃ high temperature steam sterilization) high temperature disinfection. 6. The brush head is made of medical silica gel, which is soft, has a low friction coefficient and has a long service life. http://www.dadious.com