What are the two key components described for eruption movements moving the tooth from developmental position to final position?

• A. Root drift and enamel deposition
• B. Axial movement and occlusal movement
• C. Crown formation and root closure
• D. Transverse and rotational

Answer: (B)

When a tooth moves from its developmental position to its final place, it does so through two coordinated movements: axial movement and occlusal movement. Axial movement is the progression along the tooth’s long axis, guiding the tooth upward toward the occlusal plane as the root develops and the eruption pathway is established. Occlusal movement is the adjustment of the tooth’s position toward the biting surface to align with the opposing dentition and achieve proper occlusion. Together, these movements describe how the tooth travels through bone and eventually sits in functional contact.

The other options mix processes that aren’t the main eruption movements: enamel deposition happens during crown formation, crown formation and root closure are developmental stages preceding eruption, and transverse or rotational movements aren’t the primary components described for tooth eruption.