How do I keep my sonic toothbrush clean? 2023-05-23
Toothbrushes are about 5,000 years old. Twigs, bones, wood, ivory and boar bristles form a long history of oral cleaning tools. The nylon bristled toothbrush we use today was invented in 1938. sonic toothbrush are also common these days. Both manual and sonic toothbrush are effective and thorough in