Hi, 8.5month old DS will not let me in his mouth to clean his teeth. I manage to get the tooth brush in maybe twice for 2 quick swipes through lots of crying. My little man has 6 teeth and I'm so worried they aren't getting cleaned enough. I've tried a baby tooth brush as well as the finger brush and he won't accept either and clamps his mouth shut. I've tried brushing my teeth at the same time and he sees me brush mine and again it doesn't make a single bit of difference. Does anybody have this problem or have you had this issue? Any advice would be much appreciated, thanks.