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Assessment of New Technology Such as Devices and Materials

(TC68) Re-solidification of Softened Gutta Percha Using Isopropyl Alcohol

Thursday, April 3, 2025
1:00 PM – 4:00 PM EST
The use of chloroform for the softening of gutta percha during endodontic retreatment is crucial in most cases for complete removal of endodontic filling materials and access to the apical portion of the tooth. While chloroform can rapidly soften gutta percha, it has also been shown to aid in the eradication of persistent bacteria, such as E. faecalis (Edgar, 2006), making this agent very useful for endodontic retreatments. One drawback is the difficulty in removing the liquid mixture of “chloropercha” that often forms in the chamber. This table clinic will demonstrate one method that is very effective in the removal of this slurry. The injection of 70% isopropyl alcohol into the mixture results in the rapid formation of an amorphous mass that is then more readily removed using hand or rotary instruments. This allows the provider to focus on other aspects of the retreatment to achieve improved outcomes.