Solutions to the problem of dogs growing new teeth after their deciduous teeth have not fallen out:

1. Normally, if the dog’s deciduous teeth have not fallen out before he is one year old, human intervention can be carried out. Breeders can help the dog massage the deciduous teeth every day, grab the dog's deciduous teeth and shake them gently. After a period of time, the deciduous teeth will loosen and fall off.

2. During the period when the dog’s teeth are changing, the breeder can supplement the dog with calcium. Breeders can feed dogs calcium powder, liquid calcium, etc. This type of food can quickly replenish calcium for dogs. Dogs themselves are not deficient in calcium, which can increase the growth rate of permanent teeth and successfully eject deciduous teeth to complete tooth replacement.

3. Breeders can provide dogs with chewing toys so that the dogs can loosen their deciduous teeth during entertainment, thereby completing tooth replacement.

4. During the period when the dog’s teeth are changing, the breeder can feed the dog some hard dog food, and do not feed the dog soft dog food. The dog can also eat normal dog food. Replacing teeth can help.

5. If the dog’s deciduous teeth have not been replaced after one year of age, the breeder needs to take the dog to a regular pet hospital for examination. If necessary, a professional veterinarian needs to have the teeth extracted.