Cast Post Cementation 

Why we need a Cast Post.

Tooth is severely decayed, cracked, or fractured.  The tooth needs to have root canal.  Some of gutta percha should be removed to make post space. 

What is it?

A cast post is made from an Acrylic pattern and fabricated by a trained dental laboratory technician. 

Equipment

·        Basic Setup     

·        Cotton Rolls gauze sponges

·        Hemostat

·        Spatula

·        Scaler (to remove excess cement)

·        Dental Floss

·        Mixing Pad

·        High speed hand piece; Bur Blocks

·        Articulating paper holder

·        Temporary Bond

·        Temporary Crown box and crown form if necessary

·        Ketac powder and liquid

Procedural Steps:

·        Remove a temporary crown with temporary post

·        Clean up using scaler to remove the cement out

·        Open the cast post box

·        Transfer the cast post restoration to the dentist to try on for fit

·        Use x-ray device to check whether the cast post is seated completely or not

·        If the cast post is okay, we can start to mix the cement

·        Pass Ketac cement to the doctor to apply to the inner surface of the post space, while the assistant applies cement to the outside surface of the cast post

·        After the cement has set, remove the excess cement out

·        Crown prep and PVS impression

·        To make a temporary crown, use temp bond cement

·        An explorer is used to remove the excess cement carefully from the temporary crown from a tooth

·         A dental floss with tied knots is passed between the tooth to remove excess cement from the interproximal area

Carmen Tran 3/10/2013

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Xin Wei, DDS, PhD, MS 1st edition 03/10/2013, last revision 04/03/2013