@kazeem77 Hey man, I will see if I can shed some initial light on your question, so, well, let's break it down...
First of all, my wife and I get most of our traffic primarily from Pinterest to multiple sites that we run, so we're heavily invested into it (her being the more knowledgeable one that I), but I'm going to do my best to give you a quick rundown of what I would do, but be aware that I do plan to create some forum posts around each of these steps and processes (as well as more), so if something isn't explained clearly enough, I should have some initial guides up to help by the end of the week, Lord-willing.
First thing I would recommend is actually check and see if the niche that you are in is going to do well within Pinterest (Remember, Pinterest is based off of visuals and a lot of 'aestetics", which is why fashion, recipes, DIY, home improvement does really well there).
Another thing to remember is that a lot of what you may know about doing normal/ 'old school' methods for Google around keyword research and competitor analysis can easily be applied to Pinterest.
Basically, what that means is that you can pop your browser in Incognito mode, and then use Pinterest's search bar to look up keywords by the old "Alphabet Soup" method. For example, in your niche (if I see it correctly), you could look up broad keywords like "Dental", "Halitosis", "toothpaste", "toothbrush", "Floss", or even "Bad breath" to get initially started to see what people on Pinterest (keyword-wise) are searching for. Are those keywords that you're seeing something that you have written about, can write about, or even want to write about?
For some or all of those keywords, go ahead, and actually search them and look at the results - are the pin graphics that you're seeing something that you think you can create and/or replicate?
Remember, Google keyword research and Pinterest keyword research are pretty much the same. For Google Keyword research, you're searching the keyword to see if it ranks, and then you (were before all these updates) looking at the top 10 posts or so, and creating your content to mirror/be similar/a little better than what was already ranking.
Pinterest isn't any different. Search the keyword in incognito mode, and then 'analyze' the top pins to see what type of images, color schemes, fonts, video vs image type of pin you'll need to create (because those pins, at the end of the day is what Pinterest users are wanting/looking for when they search that keyword).
Now, let's say you did this, and you think that you can create the pins that you see, and you can target the keywords that you want to target. The next thing I would do is look around and see if there are any Pinterest accounts around your niche, to double confirm that your niche is good for Pinterest.
For example, I did a quick look, and quickly found https://www.pinterest.com/orthochickey/ and https://www.pinterest.com/crest/ . These both look like they're doing well enough to suggest that your niche would probably work on Pinterest (Dental health is a very broad niche so there are a lot of keywords that you could definitely target based off of initial research).
Okay, so if you've done all of that, and still think that your niche is good to go on Pinterest, then it's just a matter of creating pins.
Something that needs to be addressed is "The fastest and easiest way to drive traffic" - I generally am only going to work with the best way that is going to keep my account within the guidelines of what Pinterest has said to do/not do, to make sure my site does well for the long run. So if you want to get a lot of traffic fast from Pinterest, then find a greyhat/blackhat expert (i.e. Partha, lol) and ask what dodgy methods they can send your way.
If you want to grow your account more 'whitehat'-wise and properly, here is what I would do:
1. Create a list of all your articles, and create one pin per article, and then for the first two weeks, schedule 1 pin per day. When you get to the end of the list, go back through and do it all over again (just make sure to add all the articles that you've created to the list so that you can pin them too). We're doing this to show Pinterest that we're just starting out and being consistent with our pinning.
2. After two weeks, pin about 2 per day for two weeks. Then after that I would go up to 3-5 per day for two week to a month, and then no more than up to 15 per day (that is if you have enough content, and someone who is pinning full-time for you).
3. On each of your pins, you should include your target keyword in three places - on the actual Pin Graphic, in the Pin Title, and in the Pin Description. Inside the pin description, we also include at least 3 supporting keywords and a CTA. Again, you're creating your pin graphics (and title/description to a certain degree) similar to what you're seeing when you search the keyword in Pinterest.
There is a lot more that needs to be said for doing anything with Pinterest since I haven't even talked about boards, saves, follows, engagement, etc. But that is generally how my wife and I would start out with Pinterest.