How often and in what manner can one use warm water with salt for oral health?

I have heard about the benefits of swishing with warm salt water. I have hard that it promotes oral health and keeps many oral diseases at bay.

I read a lot about it on the web but all the posts are different from one another in one or the other way. I'm confused after reading them.

So I was wondering if someone could elaborate on it with authenticity.

Here is the question I have :

How will it benefit oral health?

Link: https://www.quora.com/What-are-the-benefits-of-rinsing-my-gums-with-salt-water