Stability, Retention Relapse in Orthodontics

This book offers a thorough analysis of retention and stability of the orthodontic treatment results. The book is divided into three sections. The first three chapters (Section I: Orthodontic Retention) deal with the historical aspects of retention, the biological basis of relapse, and the available evidence on retention; the next six chapters (Section II: Dentofacial Treatment Stability and Relapse) cover the stability and relapse tendency of orthodontic treatment of incisor irregularity, class II, class III, transverse, and vertical problems, as well as orthognathic surgery outcome; the final four chapters (Section III: Retention Protocols and Materials) cover retention protocols and materials, including removable and fixed retainers, the materials and biomechanics of fixed retention, and the long-term effectiveness of fixed retainers. Within the content of the book, a number of reasons are given for the lack of stability of the therapeutic outcome, as well as the development of potential unwanted effects at the retention stage.