I originally came across this book in 2017 at my local library. It’s Great! the book explains many details about bacteria in your mouth and using her mouth care system and xylitol plus much more! there is a lot of Information packed in this book. I wish I had known about this 20 or more years before. I don’t understand why her Knowledge is not taught in the schools world wide so everyone can enjoy a lifetime of healthy teeth ! ( maybe Dentist like charging you to thousands of $$) I followed her mouth care system mostly for the rest of 2017 and was going to the Dentist for cleanings I was out of state and traveling for most of 2018 and forgot about it and did not follow her methods again until I purchased her book on amazon at the beginning of 2020. Do not make the mistake, get this book or her other book ” Mouth care comes clean” and follow her mouth care system and save your teeth because I did not follow her system for over a year I lost one of my teeth. this year I have been using her system morning and night in my visit to the dentist last month my gum pockets were measured and many had improvements from a 5 mm to a 4 or 3 or some 2s! no more bleeding gums they are looking a healthy pink. so if you want to learn why and how to better care for your teeth and mouth get this book!