As a retired dentist with 30+ years of practice experience I have some input here. This will be a very controversial statement:
Toothpaste is NOT essential to good oral hygiene!!!
Just routine (thorough and expert) brushing and flossing without any dentifrice is sufficient for plaque removal!
Toothpastes are useful for some reasons:
1 They make B&F taste better. 2 The fluoride is a helpful adjunct to combat decay. I personally buy dentifrices based on cost and taste.
Most everything folks (and dentists?) believe about toothpastes and toothbrushes are based on marketing hype designed to sell you products!!!
Use these or not based on personal preference. If you make your own just be sure to avoid toxic and abrasive ingredients.