This Third Edition of book incorporates with the students-friendly points to remember, that will help them to revise at the time of examination. Also from students? point of view, included most commonly asked long answer questions (LAQs), short answer questions (SAQs) and multiple choice questions (MCQs) at the end of each chapter. This book also includes new chapters on halitosis, geriatric dentistry, immunomodulators, and banned drugs in dentistry.