My Yorkies hair is all matted..?

[mash]

I have a 8 month old Yorkie and we brush him everyday but his hair is still very matted under his chin and around his mouth.. We really dont want to get him shaved as we really want a long hair dog. Is there a certain brush that i should be using for Yorkies??

 

[michelle]

I like the Furminator. I use it for my cats and it really helps get all the excess fur out that causes matts.