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Removing root posts


Removing the root posts can be divided into the following categories:

  • pre-fabricated root posts in usual restored element
  • pre-fabricated root posts under a crown
  • casted construction with complementary casted root posts under a crown
  • casted construction with posts under a crown
The above-mentioned treatment methods apply to pre-fabricated root posts without crown. Should specific treatment methods be necessary for any given category, they will be described later on.

Removing a pre-fabricated root post in an element filled with plastic material.

First, all filling material around the root post is removed carefully. Now you look if the post can be introduced at a certain side (this of course depends on the element type and in which (oval) canal the post has been placed). The operating microscope is a wonderful tool to find where a post can go through best. If the post goes through, it is no longer difficult to prepare the post loose or to vibrate loose. Special ultrasonic tips can simplify the passing of the post.

If a post cannot be passed in the above way, at that side of the radix, where the chance to make a perforation or to weaken the radix is smallest, a thin groove of some millimetres is prepared exactly along the post. This can be done with a fine flame-shaped diamond drill or with fine ultrasonic tips. Then, an attempt is made to drill the post free by keeping a sturdy ultrasonic tip against the style. If after 5 to 10 minutes no movement can be observed, then the groove along the post is made a little deeper and more extended. Almost every post is getting loose in this way.

The posts that may be gripped through the use of a forceps or otherwise could also be loosened by means of the PRS system according to Ruddle. However, prudence is called for as fracturing of the radix is plausible, which also plies if screws have to be removed. After first having used an ultrasonic tip during 5 till 10 minutes, one can try to untwist the post. Should this still not work, the above-described procedure should be applied once again.

Prefabricated root posts under a crown can very well be removed if one works with an operating microscope. The view is so good that it will hardly take any effort to prepare the post freely. For an element filled with filling material the above-described procedures should be followed.

When it is a matter of a casted construction, it is often necessary to remove the construction by drilling around the root post?. With a hard steel Trans metal drill hard steel trans metal drill the gold can be removed relatively easily. Then, the same procedure followed for the removal of a post with plastic material may be applied here. Please note, the posts of a casted construction often are not very solid as they mostly are quite conical.

If there is a casted construction under the crown, it is wise to remove the crown first. That goes very well with WAMkey . Then again the procedure is applied as described earlier.

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  • Operating microscope
  • Trans Metal Bur
  • Ultrasonic tips
  • WAMkey
    • to last chapter: Constructing the element in such a way that rubber dam can be easily placed
    to next chapter: Removing old canal fillings
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