Review of the Embryology of the Teeth

P.M. Som and I. Miletich

View Article on Neurographics Website

Date of Activity Release: Oct. 1, 2018
Date of Activity Expiration: Oct. 1, 2021

Target Audience:
Intended for neuroradiologists and neuroradiology trainees with varying degrees of experience.

Learning Objective:
The reader will understand the current theory as to how the human tooth configuration arose, as well as the embryology and anatomy of the teeth, the process of tooth eruption, alterations in the number and morphology of the teeth, and inflammatory conditions.

The embryology of the teeth was briefly covered in a previous review in this series. This present review addresses this embryology in more detail. The development of the teeth is a highly orchestrated, complex process that is the result of reciprocal inductions between the overlying first branchial arch oral cavity ectoderm, from which the cells that produce the enamel will develop, and the neural crest ectomesenchyme, from which the remaining tooth elements will arise. Early in development, the tooth germ grows and expands, and those cells that will form the mineralized components of the teeth differentiate. Once these formative cells differentiate, formation and mineralization of the dentin and enamel matrices occur. Eventually, the completed tooth will erupt into the oral cavity, and during eruption, the tooth roots become surrounded by the periodontal ligament, cementum, and supporting alveolar bone. There is also a discussion that notes some of the various abnormalities that can affect the teeth.

Commercial Support
No commercial support was received for this activity.

Credit Designation Statement

The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit(s)TM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Method of Physician Participation:
Each participant will review the corresponding Neurographics article located at Upon completion, each physician will complete and pass a post-test with a score of at least 80% to receive a CME certificate.

All individuals in control of content have disclosed the following relevant financial relationships. All of these relationships were treated as a conflict of interest, and have been resolved (C7 SCS 6.1-6.2, 6.5)

Authors have no relevant financial relationships.





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Associate Editor

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Tina Young Poussaint

Associate Editor

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Dheeraj Ghandi

Associate Editor

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