The correct answer is either a manual toothbrush or an electric toothbrush is most effective as long as you know how to use it.
As children, many of us were taught to brush up and down or side to side. If you use a manual toothbrush you need to brush in an elliptical fashion so you don’t put excessive pressure on the gums and erode them over time. You become the mover and the shaker of your brush. If you have difficulty brushing, perhaps an electric one is right for you.
With an electric toothbrush, the brush provides the movement while you become the guide; therefore, the brushing technique is slightly different than using a conventional brush. Read the inclosed manual for the brand you buy. Use an electric brush that has a round head.
Whichever type you decide to buy, make sure you use a toothbrush that has soft bristles. If you need to brush up on your technique, ask your dental professional for a “how to” session. Remember to brush for 2 minutes, which means 30 seconds for each quadrant.