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| Introduction & Tools | Technique & Successful Post Removal |
A New Post Removal System:Article by Dr. Yosef Nahmias Endodontic retreatment can range from simple procedures to significantly complex and time-consuming approaches that require the use of specialized equipment. Non- surgical retreatment has become the rule rather than the exception. Careful examination and treatment planning are essential to achieve success. It is very common to encounter failing endodontically treated teeth that contain posts within the canals (figure 1). It is then that it becomes important to have the necessary tools and knowledge to remove these posts in order to regain access into the root canal system. |
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Figure 1 |
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One factor that is important to consider before attempting to remove a post is to be able
to identify what type of post it is. Posts can be divided into three categories: parallel,
tapered, and threaded. Another important factor is, the type of cement that was used
for cementing the post. Bonded posts are usually more difficult to remove. A new system developed by Dr. Clifford Ruddle will be discussed in this article (figure 2).
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Figure 2 |
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The first step to successful post removal involves elimination of all circumferential
restorative materials from the pulp chamber. This can be accomplished with the use of
high-speed carbide burs. These burs are used to remove the bulk of the restorative
materials encountered. In order to eliminate cement around the post, it, is useful to use
an ultrasonic unit (figure 3) with tips that have been designed specifically for the
removal of obstructions within the root canal system.
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The new MiniEndo ultrasonic unit by Analytic. This unit is a powerful piezo-electronic specifically for endodontics. This unit now accepts Spartan Tips.
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Figure 3 |
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The CPR 1-8 ultrasonic tips (figure 4a & b) offer many advantages because of their size, performance, and design. It should be noted that most of these procedures are performed with more accuracy when using some type of magnification.
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The CPR 1-5 ultrasonic tips are coated with zirconium nitride. They offer many advantages due to their performance and design.
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Figure 4a |
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The CPR 6-8 tips are made of titanium. This makes the tips very flexible and their small size makes them very versatile.
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Figure 4a |
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Once the post has been fully exposed, any ultrasonic tip at full intensity should be used
to transfer energy via the post in order to loosen it. In many cases this technique
produces cement/bond failure facilitating the removal of the post. However, when the
post can not be removed by using ultrasonic strategies alone, then it is time to use the
Post Removal System (PRS) manufactured by Analytic Endodontics (figure 5).
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Figure 5 |
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| Introduction & Tools | Technique & Successful Post Removal |
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