Wife and I have 2 dachshunds. Both females. One, weighing 7 pounds and long pointed face has cavities on the 2 top front of her mouth and the teeth are very small. I estimate the width of the 2 teeth ...
I'm a firm believer in having the dogs cleaned once a year. If they have bad breath there's a good probability they need cleaned. I also get a complete blood workup at the same time. I can't imagine letting a dog suffer with a infected tooth. Poor dental care can also lead to heart problems as well.