What is the primary characteristic of the cap stage in tooth development?

The primary characteristic of the cap stage in tooth development is the establishment of the initial shape of the tooth. During this stage, the dental lamina forms a cap-like structure, which is essential for the future development of the tooth. This shape is a crucial foundation for subsequent stages in tooth formation, as it determines the overall morphology and dimensions of the tooth.

While the formation of the enamel organ is an important part of this stage, it is specifically the initial shaping of the tooth that sets the groundwork for the enamel and dentin formation that takes place later. The dental follicle and root sheath are involved in other aspects of tooth development but are not the defining characteristics of the cap stage. Thus, the establishment of the tooth’s initial shape is the standout feature that occurs during this specific phase of development.