This book includes the basic biochemical principles and explains how the management of anchorage is a fundamental part of treatment . It provides the superb exposition of different techniques which should help make decisions in the solution of different problems from space closure , passing through the therapeutic focuses of open and closed bites the treatment of anterior and posterior cross bites. Dental and skeletal through the polemic distalization. Chapter 1. Action and reaction . Chapter 2. Anchorage . Chapter 3. Space closure in orthodontics . Chapter 4. Deep bite . Chapter 5. Open bite . Chapter 6. Cross bite . Chapter 7. Distalizers . Chapter 8. Habits . Chapter 9. Lesions and emergencies during orthodontic treatment . Chapter 10. Retention in orthodontics