This chapter provides a comprehensive overview of cavity designs and direct restorative techniques in Pediatric Dentistry, aligned with the philosophy of Minimal Intervention Dentistry (MID) that prioritizes preservation of tooth structure and the dental pulp. The material science and clinical handling of adhesive restorative materials like Glass Ionomer Cement and Resin Composite are reviewed in detail with special emphasis on concepts like dentin conditioning, different generations of bonding agent, adhesive bonding protocols, selective etch technique, and more. Step-by-step descriptions along with clinical photographs are included to guide clinicians on creating an esthetic life like Resin Composite buildup for fractured permanent maxillary incisors. It touches upon the role of matrices and finishing-polishing techniques to ensure the longevity and durability of restorations. The chapter concludes by enumerating evidence-based recommendations for material selection and application in pediatric restorative dentistry.