Root canal obturation: experimental study on the thermafil system related to different irrigation protocols.

Abstract

AIM:

The aim of this study was to stress the ability of a specific obturation technique (thermafil technique) to seal root canal system in presence or absence of smear layer.

METHODOLOGY:

Sixteen monoradicular teeth, extracted for periodontal reasons, were collected for this study. All specimens were prepared with nickel-titanium rotary files, and then divided into two groups: for each group was applied a different kind of irrigation method, verifying the effectiveness in removing the smear layer, thus rendering the dentinal tubules more permeable for penetration of softened gutta-percha. Thermafil system was used to fill the root canals, and then all the specimens were observed under scanning electron microscope (SEM).

RESULTS:

The results showed that the Group which followed irrigation only with sodium hypochlorite exhibited significantly less gutta-percha tags when compared to the second Group, which was irrigated with sodium hypochlorite and EDTA.

CONCLUSION:

The thermafil systems have a very good quality of compression and fluency that permit to gain a good seal of endodontic space; furthermore it allows the penetration of gutta-percha with the formation of numerous of gutta-percha tags inside the dentinal tubules above all when smear layer is reduced or eliminated.

• Authors: Guido Migliau, Afrah Ali Abdullah Sofan, Eshrak Ali Abdullah Sofan, Salvatore Cosma, Stefano Eramo, Livio Gallottini
• Journal: Annali di stomatologia (Ann Stomatol (Roma)) Vol. 5 Issue 3 Pg. 91-7 (Jul 2014) ISSN: 1824-0852 [Print] Italy
• PMID: 25506413 (Publication Type: Journal Article)