Author(s)

Manuel Marques Ferreira, Margarida Abrantes, Hugo Ferreira, Eunice Virgínia Carrilho, Maria Filomena Botelho

Department of Biophysics and Biomathematics, IBILI-Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
Department of Dentistry, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.

This study investigated the microleakage of two different root canal obturation systems, using the nuclear medicine approach, with sodium pertechnetate ^99mTc. Twenty six single-rooted extracted teeth were selected. The crowns were sectioned to obtain15 mmlong root segments and each tooth was prepared using rotary ProFile^? instruments. The roots were divided into 2 experimental groups and two control groups. Twenty root canals were filled, using Thermafil^? and Topseal^? or MTA Fillapex^? as a sealer. On the 7th and the 28th day the apices were submersed in a solution of ^99mTc-Pertechnetate during 3 hours. The radioactivity was counted using a gamma camera. Although apical leakage on the 7th day in the Topseal group was reduced compared with RealSeal1, with a statistical significant difference (p = 0.057), on the 28th day, the MTA Fillapex increased the sealing properties (p = 0.017).

Microleakage; Nuclear Medicine; Obturation; Thermafil; Topseal; MTA Fillapex

Ferreira, M. , Abrantes, M. , Ferreira, H. , Carrilho, E. and Botelho, M. (2013) Comparison of the apical seal on filled root canals with Topseal^® vs MTA Fillapex^® sealers: A quantitative scintigraphic analysis. Open Journal of Stomatology, 3, 128-132. doi: 10.4236/ojst.2013.32024.