Insufficient oral hygiene or enamel defects such as MIH can cause severe crown destruction in a short time in young permanent teeth. It is difficult to provide the ideal treatment method for young permanent teeth with severe crown destruction. It is possible to perform successful treatments using indirect restorations with the developments in adhesive dentistry. Indirect restorations can be performed in the form of partial or full coverage indirect restorations. Full coverage indirect restorations  may be risky in young permanent teeth as the pulp may be damaged during preparation due to the short crown height, large pulp chamber, and high pulp horns. The preparation is minimally invasive, preventing pulp damage and excessive material loss with partial coverage indirect restorations. Recently, additive manufacturing (3D printers) or subtractive technologies (milling) are frequently used in dentistry. While 3D printers generally offer faster production, less material waste and lower costs; more durable and aesthetic restorations can be performed with milling systems. In this presentation, a detailed evaluation will be performed of indirect restorations produced with 3D printers and milling systems in young permanent teeth with severe crown destruction.