Exam 22: Eruption and Shedding of Teeth

An ankylosed deciduous tooth will prevent the eruption of a permanent tooth because the alveolar crest of the bone fuses in the cervical area with the dentin of a resorbing root.

The direction of tooth eruption is facial and apical.

The successional lamina is seen only facial/buccal to the anterior primary teeth because the permanent anteriors erupt slightly lingual to their primary counterparts, while the permanent posterior teeth lie below the primary and erupt through their established alveolus.

Active tooth eruption refers to the emergence of a crown into the oral cavity. This eruptive process is usually divided into the pre-eruptive and posteruptive stages.

Root elongation is the main factor in the tooth's eruption into the oral cavity.

In the pre-eruptive stage, all of the following occur EXCEPT one. Which one is the EXCEPTION?

All of the following are characteristic of the posteruptive stage EXCEPT one. Which one is the EXCEPTION?

During the eruptive stage the reduced enamel epithelium fuses with the dental follicle to create an eruptive force. The eruptive stage continues until the erupting teeth meet the opposing arch.

Supra-eruption can cause serious problems in the replacement of the missing tooth because it makes it difficult to reestablish the normal occlusal plane.