Microleakage of two root-end filling materials in the cavities prepared by laser and ultrasonic technique: An in-vitro study
Donyavi, Z., Khoshbin, E., Esmaeilzadeh, M., Rezaei-Soufi, L. & Kermani, N.
Italian Journal of Vascular and Endovascular Surgery, 2017;24(3), pp.101–106
Background:
The present study determined the microleakage of two root-end filling materials in the cavities prepared by Er:YAG 2940 nm laser and ultrasonic techniques.
Materials and Methods:
In this in-vitro trial, 100 single-rooted teeth were prepared by ProTaper files and after having their crowns to be filled with glass-ionomer, their 3-mm root-ends were cut and the specimens were allocated to 4 groups. The root-end cavities were prepared by ultrasonic tips and Er:YAG 2940 nm laser while mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement were used as root-end filling materials. The teeth surfaces were coated by 2 layers of nail varnish up to root-end region. The leakage were subjected to one-sided analysis of variance test in 4 groups and the paired comparisons were done by Tukey test.
Results:
The leakage values were 2.46±0.56 μ for ultrasonic/CEM cement group while it was 2.71±0.46 μ, 2.07±0.57 μ and 2.09±0.51 μ for the ultrasonic/MTA, laser/CEM cement and laser/MTA groups respectively. Significant differences existed among 4 groups of root-end cavity preparation techniques and root-end filling materials (P<0.0001). The effects of laser and ultrasonic to prepare root-end cavities on the leakage values were significant (P<0.0001), so that lower leakage values were noted for laser groups as compared to ultrasonic. The materials of root-end filling had no significant effect on the leakage values.
Conclusions:
Due to the decreased leakage using laser for root-end cavity preparation compared to ultrasonic tips and similar leakage values between MTA and CEM cement used as root-end filling materials, Er:YAG laser is proposed for the root-end cavity preparation and CEM cement can be used as an alternative for MTA to fill root-end cavities. However, in-vivo studies are required in this regard.