Local Drug Delivery System is an emerging trend in the field of Periodontology.Continues research is going-on and newer drugs are getting added as local drug delivery system.Eradicating microorganisms from the periodontal pocket is a crucial task in treating periodontitis. For treating periodontal diseases targeting of an anti-infective agent to infection sites with effective levels for a sufficient time while concurrently evoking minimal or no side effects is needed.Novel therapeutic agents are being improvised in the arena of local drug delivery system to ensure maximum benefit. This book will help both Under-graduate and Post-graduate students as well as the general practitioners in the field of dentistry to know the details about local drug delivery systems and local drug delivery agents being used for periodontal diseases and other oral infections in detail.