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Endodontics |
Crown and Post removal - Courtesy ROOTS
From: Marga Ree To: ROOTS Sent: Monday, May 28, 2007 5:26 PM Subject: [roots] crown and post removal Usually it's not possible to remove crowns on anterior teeth with the Metalift, but in this case the path of insertion was pretty vertical, so I could remove it. This was a patient from our own practice, and the crown, cast post and core were done by myself, more than 15 years ago. US vibration was inadequate to remove the post, so I decided to use the post puller. But due to the malposition of the lateral, the beak of the puller was too big to be placed between the central and the canine. The old Gonon post puller, my favourite, which was recently innovated by Pierre Machtou, and is called the Thomas post puller now, has a tube which you can slide over the tubular tab, see picture, and by which the beak of the puller is moved in a coronal direction, away from the limited space between the teeth. That worked, and the post was used to improve the retention by embedding it in the relining of the crown, so it could serve as a temporary restoration between visits. Patient returned after 1 month, was symptomfree, and after finishing the root canal filling, a fiber post was placed with LuxaCore, the BU was made of LuxaCore, while using the crown as a mould. The palatal opening could act as a venting hole. After setting, the crown was removed, the surplus of composite was removed from the margins, and the crown was recemented. - MargaBeautiful marga, and i owe you one for originally turning me on to the gonon/thomas post puller. when using the crown as a mould for the luxacore do you lubricate the inside of the crown with anything? - Gary
