Book excerpt: This exciting new edition describes the essential details of diagnosis for functional appliances, gives detailed instructions on how to obtain a correct construction bite, describes fabrication and use of various types of functional appliances and discusses the specific treatment of different malocclusion categories. New chapters discuss the expansion-activator and twin block appliance, the functional magnetic system, the Hamilton, the modern Herbst appliance and the Jasper Jumper. Spanish version also available, ISBN: 84-8174-331-3