At a health seminar, I heard about oil pulling. Not hindered by any kind of knowledge I bought a pot of coconut oil and tried it myself. And concluded that I lack the patience for something like that. Oil pulling is comparable to mouthwash. You have to keep the oil in your mouth for 15-20 minutes and let it swish around.
Finally, wanting to answer the question “Why is coconut oil good for your teeth”, I discovered that coconut oil is 100% saturated fat. Half a year before that I was warned that my cholesterol was too high, and I was panicky about anything leaning towards saturated fat.