Some Yorkies do need them very often. My vet has seen some that could use a dental every 3-6 months. Also if there are issues with the enamel, that could be a factor.
With such severe build up, I'd try brushing with an enzymatic toothpaste twice daily. I'd also use OraVet which is debatable.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |