Do I need an electric toothbrush?

May not be. Rozenberg said that the basic soft-bristled toothbrush can also work if you use the right technology.
Put your brush at 45 degrees to your gums. Move one quadrant back and forth in a wide stroke of gentle teeth. Brush the outer, inner and chewing surfaces of each tooth and focus one quadrant at a time.
Brushing the tongue to remove the bacteria that caused the disease and odor hidden there.
If you know that you will not do that, invest in an electric toothbrush.
“It can continue to effectively smooth out the tooth surface, gently and effectively clean the teeth,” said DDS Elisa Mello, a cosmetic dentist in New York City, New York. Some brushes have sonic effects that can cause oral bacteria and teeth to fall off the surface.
In addition, most people have timers, so you know when you have been brushing long enough.
No matter which type of toothbrush you use, change the brush every 3-4 months (or just bristles, if it is electric).