Do your SELF a favor and believe in you!
Everybody on this planet is an individual, we are all as different as our fingerprints.
We each see, hear, feel, touch and taste our experiences quite uniquely and yet some of us can still feel vulnerable enough to depend on advice from many different sources in our day to day life.
Without these sources ever really knowing you as an individual person and how you truly experience your day to day life, as 'you'.
I'm not saying that getting a second opinion isnt a good thing or getting advice in a specialist area such as your dentist. These are neccessary and you have the choice to pick and choose who you trust in these matters.