The book, built on 45 years of pediatric orthodontic research, emphasizes treating maxillo-mandibular dysmorphosis early, ideally once temporary dentition sets. Poor teeth positioning often reveals muscular imbalances, which can be addressed around age 4. Persisting primary swallowing patterns can lead to facial growth disorders. Functional problems manifest in various bite issues, but merely correcting teeth positioning tackles the visible aspect of deeper functional challenges. Addressing these issues early promotes healthier development and social integration for children. The book serves as a guide for various dental practitioners in early child orthodontics.