Dental caries is one of the most common chronic infectious, communicable and multifactorial oral disease in worldwide population which is not self limiting without proper care. Upon neglecting its initial progression it leads to pulpal and periapical pathologies and tooth loss if not treated timely.Minimal invasive dentistry mainly focuses on preventing carious lesion in initial and developing stages. Therefore this book focuses mainly on early diagnosis of caries and treatment modalities that requires minimal intervention.