Orthodontics, also known as orthodontia, is a specialty in the field of dentistry. It is concerned with the diagnosis of malpositioned teeth and jaws along with their correction and prevention. The abnormal deviation of teeth from the ideal occlusion is known as malocclusion. Orthodontic camouflage and growth modification are two common methods for treating malocclusions with underlying skeletal problems. A combination of orthodontic and orthognathic surgical treatment may also be used to correct jaw discrepancy. Orthodontic indices such as angle's classification, malignment index, occlusal feature index, Handicapping Labiolingual Deviation Index (HLDI), etc. are used to grade and assess malocclusions. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in the field of orthodontics. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. This book attempts to assist those with a goal of delving into the field of orthodontics.