This book covers two increasingly prominent aspects of dentistry: nanotechnology and ozone. Nanotechnology has rapidly expanded into all areas of science; it offers significant alternative ways of solving scientific and medical questions and problems. In dentistry, nanotechnology has been exploited in the development of restorative materials with significant success. The recent advances in nanotechnology could hold promise in bringing about a paradigm shift in the dental field. Although there are numerous complex therapies being developed to treat many diseases, their clinical use requires careful consideration of the expense of synthesis and implementation.The world is moving towards non-invasive methods of treatment and the principle of 'extension for prevention' is losing its popularity. The energized form of oxygen is ozone, which has varied properties like anti-microbial activity, biocompatibility, disinfection and healing properties. As such, this book shows that it has a major scope of application in the fields of medicine and dentistry.