I am concerned that my son's teeth will develop cavitites because he HATES to have his teeth brushed.: Does anyone have any advice to make this chore a more agreeable one for him? I think that because he did not eat solids much until around 13 months, he did not get 'used to' the toothbrushing and so now resists it at 18 months. I just do not know. Any advice would be appreciated.