If you are quite adept at using a manual toothbrush with a correct technique & use it for minimum…
If you are quite adept at using a manual toothbrush with a correct technique & use it for minimum of two minutes, then there is no need to use an electric toothbrush. The electric toothbrush is useful for someone who is not skillful in proper brushing techniques or tends to complete the brushing earlier than the recommended time. Children also find the electric toothbrushes more user friendly and this is a great way to encourage children to brush their teeth twice a day by considering this as a fun activity & not a task. An electric toothbrush also requires less effort while brushing. By just placing the brush over the tooth using its pulsations & movements, it cleans your teeth without having to do any brushing strokes. Many of the electric toothbrushes come with timers that can be set to two minutes so that there is no guess work on how long you have brushed.
However, it is recommended to go for a professional cleaning every six months as your dentist or hygienist can clean the hard-to-reach places. This will reduce the risk of cavities & gum disease.