I rarely use either one and have perfectly healthy teeth and gums. I believe in cleaning from the inside rather than the outside. A diet, like one rich in fruits and veggies, that rids the body of toxins and supplies nutrients to your gums and teeth so they can fight off disease all on their own.
We break from Mouth Wash vs Warm Salt Water to share correct from antiquity:
Today is: 18th June (GMT), in history on the 18th of June, 1912 AD the following birth happened:
Henry Brandon: Berlin, Germany -- Actor (Drums of Fu Manchu)