The preeruptive movement requires remodeling through bone resorption and deposition. Which statement correctly describes this?

• A. bone resorption only
• B. bone resorption and bone deposition activities will allow the tooth germ to change positions
• C. bone deposition only
• D. neither resorption nor deposition

Answer: (B)

Preeruptive movement relies on bone remodeling in the developing jaw, driven by both resorption and deposition. As the tooth germ moves toward its eruption path, bone is resorbed along the route to clear space, while new bone is deposited elsewhere to maintain the surrounding structure and provide support. This coordinated remodeling lets the tooth germ change position safely within the jaw rather than being blocked by intact bone. Relying on only resorption would weaken the area and fail to create new support, while deposition alone wouldn’t clear the path for movement. Thus, the combination of resorption and deposition best describes how the tooth germ changes position during preeruptive movement.