You should give time for your health. Healthy mind stays in healthy body. As we all know that toothache is sever form of pain, if your teeth pains you can't concentrate on your work. So it is always better to visit your dentist after every six months even if there is no problem because. Prevention is always better than cure. You should brush your teeth two times a day with proper brushing technique, night brushing is as important as morning brushing.