Do you know about Yorkie's predisposition to dental problems? The breed is renown for getting gum disease, caries, tooth abscess, early tooth loss and retaining many of their baby teeth, which often have to be removed by the vet. Most of them need to have their teeth and gumlines professionally cleaned under anesthesia at least once a year, together with daily toothbrushing using dog toothpaste as human toothpaste can be harmful or fatal to dogs if it has fluoride or xylitol in it. My little boy lost 4 of his permanent teeth and had several retained baby teeth removed a few weeks after I got him at age 9 mos. as he'd eaten a very poor diet at his breeder's, his teeth had a brown coating all over them and his retained baby teeth had set up tooth decay between them and those 4 permanent teeth. Since he recovered from that cleaning/tooth removal, I've taught him to accept regular tooth brushing and he's lost no more permanent teeth. If you notice, many older toy dogs have tongues hanging out or partially showing because they have lost so many permanent teeth due to poor dental care by their owners and vet.
I'd ask my vet about any retained baby teeth to be sure they don't cost him any permanent teeth.
Here are some websites to read about it:
https://www.google.com/webhp?sourcei...tal%20problems