My daughter just turned one and she has 8 teeth...7 in the front and 1 in the back. I have been brushing her teeth with the infant tooth brush...the one you put on your finger and stick in there mouths...I got it out of a infant oral care kit and it also came with a teether, regualr tooth brush, and an insizer tooth brush. Is it time to start using the insizer tooth brush or can i go to the regualr tooth brush?? i dont know what the insizer one will do, its just 4 hard rubber brisels instead of a normal tooth brush. what r 4 rubber brisels going to do.