I have a similar problem and am in need of assistance! I have repeatedly sprained my thumb in the past 5 years (+6 times) playing sports such as basketball and football. I have always decided on letting it heal without going to a doctor but it has gotten very unstable now and I'm going to see a specialist. If i need some kind of surgery and wont be able to use my right hand for a little when school starts, will the school suspend me in any way? Also, I've been thinking about it for a while but can I start dental school lefty even though I've used my right hand for everything my whole life?