Archive: The fourth edition of the Textbook of Microbiology for Dental Students has been written as per the syllabus prescribed by Dental Council of India. Keeping in mind the requirements of dental students emphasis has been on the oral manifestations of various microorganisms. Each chapter has been carefully updated and expanded to include new, medically relevant, discoveries. Laboratory diagnosis of various microbial infections has been summarized with the help of flowcharts. Each chapter ends with key facts and important questions. The former summarize the whole chapter and help the student for last minute revision for theory, practical and viva voce examination, and the latter help the student to know the type of questions asked in the examination. The language is lucid and easy to understand. In oral microbiology, emphasis has been on normal flora of mouth and respiratory tract, dental plaque, dental caries, periodontal diseases and dentoalveolar abscess. In the chapter on hepatitis viruses, emphasis has been on various hepatitis viruses and dentistry. The book will be highly useful to graduate and post graduate (MDS) students of dentistry, and students of other paramedical courses.