The most important thing is selecting the right type of bristle and the size of the head. A soft toothbrush with a small head is recommended because medium and hard brushes tend to cause irritation, teeth attrition, and abrasion, and contribute to recession of the gums. A toothbrush with a smaller head is simply easier, and allows you to maneuver around each tooth. It is also less likely to injure your gums. It isn’t necessary to scrub hard, but it is recommended that you brush at least twice a day using the proper technique.
Always brush away from the gums, downward direction on upper teeth and upward direction on lower teeth. Electric toothbrushes are also available and can be used to maintain good oral health. What makes a difference is the technique used in brushing.