Teeth need to be brushed twice daily to maintain oral health in people and pets are no exception. Plaque bacteria is a factor in dogs and cats, and what removes plaque bacteria from the tooth surface is brushing. If a pet tolerates having their teeth brushed twice a day then that will greatly help to maintain good oral health between professional cleanings. If a pet is less tolerant then once a day is sufficient and if they do not tolerate it at all then other options exist that work for both pet and owner.
Jeanne Perrone, MS, CVT, VTS (Dentistry)