There always has been some controversy surrounding the need to place a post while restoring broken down teeth. Everyone has their philosophy. I’ll give you the endodontist’s perspective.
After I complete a root canal, I discuss the need for core placement with the restoring dentist. This is my rough criteria in the decision making tree:
If only 1-2 walls of tooth structure remain on premolar or incisors, I use a post. If I am missing 2-3 walls in the posterior, I also may use a post depending on occlusal scheme, periodontal condition and para function.
With bonding agents being where they are now, I lean toward more conservative decision making when choosing to post or not. Even when picking out the post, I prefer a more conservative post to a large metal screw-in post. Therefore, the ParaPost Taper Lux from Coltene is PERFECT! The .04 tapered end provides a closer fit and requires less removal of apical dentin in narrow canals. The glass-fiber post has unidirectional fibers in a resin matrix allowing for great radiopacity. It also has a rounded, undercut, three-cylinder head design for core retention. It can be easily cemented with light-, dual-, or self-cured resin cements.
This post is a great conservative answer to rebuilding teeth in need of retention beyond a traditional core.
Click here for more information on ParaPost Taper Lux.