Source: Academic Life in Emergency Medicine
See also: Dental Videos at http://thedentalbox.com/videos.html (topics include: nerve blocks, topical anesthestics, hemostasis, dressings, avulsed tooth management, carie care, dry socket care, fractured tooth care)
Ellis classification
Ellis I
Includes crown fractures that extend only through the enamel
Teeth are usually nontender, and without visible color change, but have rough edges
Ellis II
Fractures that involve the enamel and dentin layers
Teeth are typically sensitive to cold, hot, touch, and/or air exposure
A yellow-tinged layer of dentin is typically visible on examination
Require immediate dental consultation to prevent abscess formation
Ellis III
Involve the enamel, dentin, and pulp layers
Teeth are extremely sensitive, and have a visible area of pink, red, or even blood at the center of the tooth
Require immediate dental consultation to prevent abscess formation
Image credit and see also: http://www.pemcincinnati.com/blog/quick-case-6-problems-teeth/
