I thought this didnt happen till they were about 7 but my dd who is 5 in 3 weeks came home tonight and said she thinks one of her bottom teeth is wobbly (not centre one but next one along), anywyay sure enough it is - she was hysterical at the thought but has calmed down now. I never thought anything else of it but my mil has made a comment to my dh of concern that perhaps its a bit early. She cut her first tooth at 6 months if this means anything. She brushes them twice a day and they look well, we dont eat sweets or drink fizzy pop but she is a thumb sucker. Am i being a worry head? We are a dentists on Monday for checkup anyway.