Book excerpt: Therapeutic diagnosis / Thomas Rakosi -- Preventive orthodontics / Brian Preston -- Early treatment : interceptive guidance of occlusion including serial extraction followed by mechanotherapy / Jack Dale -- Functional orthodontic and functional orthopedic treatment / Thomas Rakosi -- The twin block technique / William Clark -- The functional magnetic system / Alexander Vardimon -- Early maxillary expansion / M. Ali Darendeliler -- The interarch compression spring in orthodontics / John DeVincenzo -- Anchorage control in orthodontic extraction therapy / Michael Marcotte -- Segmented arch mechanics / Andrew Kuhlberg -- The Alexander discipline / R.G. Wick Alexander -- Implants and orthodontics / Magdalena Kotova -- Treatment with the invisalign system / Rainer-Reginald Miethke -- Stripping / Bjørn Zachrisson -- Active retention procedures / John J. Sheridan -- Treatment planning for mandibular distraction osteogenesis / Jason B. Cope.