Book excerpt: Periodontal disease is one of the most common diseases observed by small animal practitioners, and it is not uncommon for the veterinary technician to be the first line in oral health assessment and treatment. Despite this, current dentistry training for veterinary technicians and nurses is often very limited. This book explains the causes, consequences, prevention and treatment of pet dental diseases including periodontal disease, fractured teeth, tooth resorption, dental malocclusions, oral masses, jaw fractures, and other oral conditions.