Hello and Welcome to Y.T......I'm not sure if I' understanding, do you mean your pup has some retained baby teeth?.......If so that is quite common. A lot of people will have those removed at the same time as a spay/ or neutering so the pup will only have to be put under anesthesia the one time.....
If your talking about just a cleaning that will very quite a bit by your location and the vets fees....Here, the cost is approx. $200-300, you have to inquire if that includes pre-blood work. It is recommended to have that done to see if any underlying issues are going on where putting them under would be problematic. Also,the fee will generally go up for each extraction (one vet charged approx. $9 for each extraction)......
Good luck.....