I have not tried it myself but have met with the patients who used to do so and I can say from the experience that it is not useful to have Oil pulling for your teeth...The oral hygiene of the patients was pathetic coz they only relied on the Oil. However there are cases as you mentioned that Oil pulling helped them...letme clear that part. Have you heard that genetics plays a part in the tooth health as well...some teeth are more vulnerable for decay while others are not so much. Ever heard a guy never did paste his teeth and still had healthy gums and teeth...Thatz Genetics. Regarding Education system I don't know about your country or state but out Edu System is still intact and also It has got nothing to do with The Education System...You read literature which is the extract of Clinical knowledge and experimentation of Pioneers of this field . There is not a word uttered out of dilemma. Medicine field is not bound to the theory but it is the applied science in the human body.