DS is 14 months and when he grins, his lower jaw kind of slides sideways so his top and bottom front teeth don't line up at all (they do otherwise). I think it's cuuuuuuute! but this evening DP was worrying that he might have something wrong or that it could cause a painful TMJ-type problem later on. Does anyone have any experience of this? I will ask HV when I see her but that will be a while - just want to reassure/enlighten DP if I can...