Orthodontists prefer to move teeth in individuals who have good periodontal structures. However, we frequently see individuals who have poor periodontal health. Ortho-Perio Inter-relationship helps us navigate the challenges of our real life, less than periodontally perfect patients. Interactions between periodontics and orthodontics are often concerned with the formation of an accurate diagnostic and the treatment planning required to enable coordinated perio-ortho therapy. This book offers a comprehensive examination of the subject from both a periodontal and an orthodontic standpoint. The authors provide a thorough analysis of the scientific and clinical interactions of these specialities by evaluating all available material and utilising case studies to establish theoretical ideas. The end result is a text that covers the fundamentals of therapy and demonstrates how to improve therapeutic outcomes using orthodontic-periodontic interventions.