Out of my 3 dc ds1 has by far the worst teeth, and has done from a very early age. This is despite the fact that as my pfb he probably had the best/healthiest diet and most attention paid to tooth brushing! He is also the only one of my dc to be asthmatic, having been diagnosed and treated from an early age - he is now 11.
Saw a new (paediatric) dentist today and she said something in passing about inhalers causing tooth problems. Would have asked her to elaborate but at this point the younger 2 dc started to carry on and I thought it better to leave!
Does anyone know anything about a connection? Ds1 is on a fair bit of medication daily.