If it has to be done then i too would be interested in the frrquency so i can get that happening.[/b]
There is not a single right answer and the right answer is only how it pertains to an individual dog. Factors that influence it are the
1. dogs diet soft food generally is more likely to cause more of a plaque build up
2, How the dog eats chews. Many if most hound rather than chew kibble swallow it hole therby negating any benefit from possible teeth sraping of the hard kibble. There are dry food designed to help keep teeth cleen but the kbble size must be large enough so the dog actually chews it
3. addition chew. tennis balls, dental chews . bones etc. Bone are know to keep dogs teeth clean but they come at a risk of stomach and intestinal blockages and puncture. It is on reason vets prefer brushing to bones. Dental chew can have a limited benefit depending how often the dog uses them. Tennis balls car very abrassive on teeth and can wear them out. One should limit a dog to acess to ball specifical designed for dogs.
4. dental conformation. The arragment of the teeth, gaps, alignment, spacing play a important role on the amount of food debris trapped.
so there are dogs that do not ever need brushing but in general they are few and far between. Also it is nearly impossible to over brush as well it is often recommend tofollowing human brushing protocal which is following every meal.