teeth are TOUGH! it has to be gradual... start by putting the toothpaste on your finger (it helps if it is chicken or something flavored) and just get him to lick it off.. then start by rubbing his gums.... a week or so later try letting him go to the back teeth.... then start with the toothbrush.. get him to lick it off the brush... and just go slow... i put Layla on her back because it is easiest for me... also try an infant toothbrush.. or toddler... the ones you get at the pet store are too big for our little guys.... and if wrapping him in a towel (after all the steps you take) is the only way to get him to lay still.. then so be it
but i think if i go slow with him it will work out!