Preface Questions expose our uncertainty, and uncertainty has been our motive. The authors and contributors have aggre-gated the final volume of this book in answer to questions covering the breadth and depths of orthodontics. This volume covers the management of adults and complex cases in orthodontics, which requires enormous skills and knowledge; some even consider this field as a subspecialty. Therefore, the theme of this chapter is Uranus, who was initially thought to be an independent star. The writing of the book started with the amalgamation of orthodontic notes and the experience of the primary two authors, Dr Mohammed Almuzian and Dr Haris Khan; it organically grew with input from other authors who helped in proofreading, summarising the key points of each chapter, and implementing the ‘exam night review’ section. There have been numerous contributors to this book; we seek to acknowledge them, as, without each contributor’s efforts, this book would have been nothing more than an interesting idea and a ‘what if’.