Effects of Dissolving Solutions on the Accuracy of an Electronic Apex Locator-Integrated Endodontic Handpiece

Yakup Ustun,Ozgur Uzun,Burhan Can Canakci,Murat Maden,Ozgur Er,Fatma Yalpı

doi:10.1155/2013/475178

Yakup Ustun, Ozgur Uzun + Show 4 more

Open Access

https://doi.org/10.1155/2013/475178

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Abstract

The effects of three dissolving agents on the accuracy of an electronic apex locator- (EAL-) integrated endodontic handpiece during retreatment procedures were evaluated. The true lengths (TLs) of 56 extracted incisor teeth were determined visually. Twenty teeth were filled with gutta-percha and a resin-based sealer (group A), 20 with gutta-percha and a zinc oxide/eugenol-based sealer (group B), and 16 roots were used as the control group (group C). All roots were prepared to TL. Guttasolv, Resosolv, and Endosolv E were used as the dissolving solutions. Two evaluations of the handpiece were performed: the apical accuracy during the auto reverse function (ARL) and the apex locator function (EL) alone. The ARL function of the handpiece gave acceptable results. There were significant differences between the EL mode measurements and the TL (P < 0.05). In these comparisons, Tri Auto ZX EL mode measurements were significantly shorter than those of the TL.

Highlights

Root canal-treated teeth may require orthograde revision in the case of a persistent infection or following reinfection of the root canal [1]
The manufacturers recommend the use of Endosolv E when zinc oxide/eugenol-based sealers have been used as the root canal sealer, Resosolv when resinbased sealers were used, and Guttasolv when gutta-percha was used as the root canal filling material
There was no significant difference in comparisons between the Tri Auto ZX ARL measurements and the true lengths (TLs) among the experimental groups (P > 0.05, Table 2)

Summary

Introduction

Root canal-treated teeth may require orthograde revision in the case of a persistent infection or following reinfection of the root canal [1]. A retreatment procedure in endodontic practice requires complete removal of the original root filling materials and enlarging and repreparing the root canal prior to refilling [1, 2]. The use of rotary instruments with dissolving solvents may facilitate the removal of root canal filling materials and the repreparation of the root canals in clinical practice. Three such solvents are Endosolv E (Septodont, Saint-Maur-des-Fosse, France), Resosolv (Pierre Rolland, Merignac, France), and Guttasolv (Septodont), which contain primarily tetrachloroethylene, dimethylformamide, and eucalyptol, respectively. The manufacturers recommend the use of Endosolv E when zinc oxide/eugenol-based sealers have been used as the root canal sealer, Resosolv when resinbased sealers were used, and Guttasolv when gutta-percha was used as the root canal filling material

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Conclusion