Feel like I don't have the right to rate this book , since this is my first time to read about Ozone in dental use ! But anyways I gave my four stars rating to the only scientific book I could simply read within a week and summarize the main points within anout 400 important notes. This book covers the major topics related to Ozone as a gas and as a medication for both medical and dental use , and then followed by a detailed explanation about the most recent and important studies and statistics related to the new dental approach. Even though it takes in consideration only researches before 2004 ( the date it was published) , it could make it so clear for me and answered all the questions that came into my mind. I do recommend it for dental students and dentists interested in dental researches.