My beastie only started getting teeth at 14 months and just got her full set at 2.3 years old. She copies us and her big sister brush, so we kind of get something resembling brushing maybe once a day, sometimes less often. Sometimes she lets me do it, mostly not. She always has a sippy cup of water with her so I'm not that fussed. At least she's not scared of the toothbrush the same way she's scared of the hairbrush - it is virtually impossible to brush (or cut) her hair and her hair is almost waist length when it is wet!