I am in the dental industry and I spend my days watching different dentists and specialists do their thing on a day to day basis.
In all this experience, I have learned a couple of very important things, first of all, if a specialty exists for the procedure you are about to undergo, GO TO THE SPECIALIST! I.e. periodontist for gums or I plants, oral surgery for extractions, Endodontist for root canals, prosthodontist for substantial restorative work, and orthodontist for braces/Invisalign.
Second, unless it is trauma, dental problems take a LONG time to develop. So never believe a dentist that tells you you have to do some thing RIGHT NOW. If it costs a lot of money, get a second opinion from a specialist.
Third, never ever get an HMO policy for dental from your employer, get the PPO, it doesn't cost much more and HMOs will always end up costing you more in the long run. Because HMO offices HAVE to upsell you to make any money at all.
That is all... Good luck.