Tag Archives: post and core

Post and core Part 2

Post design

Posts (or dowels) can generally be divided into two main subgroups, depending on how retention is achieved. Active posts derive their primary retention directly from the root dentine by the use of threads. Passive posts on the other hand gain retention as their name suggests by passively seating in close proximity to the post hole walls, and rely primarily on the luting cement for their retention. Each post type can further be subdivided according to its general shape, that is whether it is tapered or parallel sided. In general, active posts are more retentive than passive posts of a similar configuration, and parallel-sided posts are more retentive than tapered posts. Post choice should therefore be dictated by each clinical situation. Continue reading →

Post and core Part 1

A post and core is a dental restoration, which is used to sufficiently restore a tooth morphology followed by future restoration such as a crown, when there is no an adequate part of tooth hard tissue regarding to the required clinical indication of the case, due to loss of tooth structure as a result of decay, fracture or other causes. Post and cores can be referred as one of the foundation restorations. Continue reading →

The Disadvantages of Porcelain Crowns

A porcelain crown

Teeth can become weak due to extensive damage to the teeth, or certain dental procedures, or worn from age or neglect. When this happens your dentist can fit a crown, which will protect the tooth against future damage for up to 20 years. Crowns then are ‘covers’ for our teeth that fit over the chewing surface and over and around the outside surfaces like a glove. This can be used then to cover abscesses thus protecting exposed nerves and preventing food from getting trapped inside the gaps between the cusps in our teeth. Continue reading →