Preventing gingivitis?

So one dentist says that in order to prevent gingivitis you need to brush your teeth several times a day and keep the gum line clean.

Another dentist says that brushing too frequently can CAUSE gingivitis.

Which one do you think is correct?
DENTIST 1 is correct. The more you brush/floss, the better your chances.
DENTIST 2 is correct. The less friction to your gum line the better.
Just pull all your teeth out and get dentures...
Select gender and age to cast your vote:
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Thanks, everyone, for sharing your comments!


To TheGodEmperorLeto and phil2:


It's a tie for best answer. Anything you'd like to add?
Preventing gingivitis?
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