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 Obturation


The opinions within this web page are not ours. Authors have been credited for the individual posts where they are. - www.rxroots.com Courtesy: Terry Pannkuk / Benjamin Schein

Dan, I drew this for you today. I've been meaning to update my obturation series so I'm glad you pushed me along. They're still a little rough without the detail. I apologize for any distortions that haven't been cleaned up yet.

Materials: SystemB, Kerr Sealer (not EWT), Nonstandardized gp cones, Obtura, Schilder pluggers - Terry Pannkuk


Obturation 1
Obturation 1

Obturation is relatively simple. If cleaning and shaping has been performed properly, cone fit and obturation is not very technique sensitive. In this drawing I want to highlight the cone fit binding with tug back at the apex. Ideally, you should have the tip of the cone closely adapt with frictional resistance over the last one or two millimeters. I do not like Autofit cones because, I don't like the idea that one actually thinks they need to get a perfect fit of the coronal half of the root canal preparation. If anything, trying to achieve a good coronal fit may result in a poor apical fit.

Obturation 2

I dip the cone in sealer put it into the root canal system, then pull it out to check that a consistent even coating of sealer is present. If so, I replace the cone and sear off the coronal excess with the System B plugger. Usually the smallest one that I had been heating up the irrigant with during cleaning and shaping.


Obturation 2

Obturation 3
Obturation 3

I next compact the coronal pad of softened gutta percha with the largest preselected Schilder plugger (usually a 10). I hold it with firm constant pressure for 8 seconds, then rotate the handle to loosen the plugger tip, ensuring that it doesn't stick to the cone, and remove it.

Obturation 4

I introduced the System B plugger again applying heat. The chosen heat plugger is not used as a plugger at all. I use it as a heat carrier to remove gutta percha. It is heated just to the point that it melts the gutta percha, angled, heat application is terminated, and the plugger is removed with a wad of gp.


Obturation 4

Obturation 5
Obturation 5

A preselected plugger that captures the maximum surface of the softened gutta percha without binding to dentin, is used for compaction as in Ob3.jpg except at a more apical level. I perform this entirely under the SOP and like to see the even expression of sealer along the sides as I firmly hold the plugger for 8 seconds

Obturation 6

Same as Oburation 5 at a more apical level.


Obturation 6

Obturation 7
Obturation 7

Same as Obturation 5 except at a more apical level with a smaller more appropriate fitting plugger (preselected). This is the deepest pack.

Obturation 8

This slide depicts backpacking with the Obtura and I want to show that I coat the tip with sealer as I backpack.


Obturation 8

Obturation 9
Obturation 9

I backpack incrementally with sealer to make sure there are no voids. I compress for 8 seconds just as I did in the downpack. The process is repeated until the coronal space is filled to within 2 mm of the orifice. I usually bond a core into the 2mm orifice depression. The depth somewhat depends upon the remaining tooth structure and retentive needs.

Nice drawing Terry!!!!!! Here are some that can help explain "the shape" Keeping the portal of exit in it's original position. - Ben


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