What are the types of channels that separate the termination of the cementum from the external surface of the root? - Principal: follows the long...

What are the types of channels that separate the termination of the cementum from the external surface of the root?


- Principal: follows the long axis of the tooth
- Colateral: runs parallel to the principal channel but is smaller
- Lateral: exits the principal channel in the cervical region and reaches the outside
- Secondary: exits the principal channel in the apical region and reaches the outside
- Accessory: derived from a secondary channel and reaches the outside
- Intercanal: channel that connects different channels
- Recurrent: exits the principal channel, follows a long path, and then reenters the principal channel
- Reticular: interlacing of 3 or more channels that run parallel
- Apical delta: multiple exits from the principal channel that exit in the cervical region and generate multiple foramina
- Cavo-interradicular: exits the pulp chamber and reaches the outside in the region of bifurcation or trifurcation (more commonly found in deciduous teeth)