Placement of Mineral Trioxide Aggregate Using Two Different Techniques

Abstract

The purpose of this study was to determine if the adaptation of mineral trioxide aggregate (MTA) would differ when placed into simulated root canals of varying length when using two different placement and condensation methods. Hand condensation was compared to ultrasonic condensation. Eighty polyethylene tubes were divided into four groups of 20 tubes each. The tubes in the four groups were prepared to receive 3-, 5-, 7-, and 10-mm lengths of MTA respectively. Each group of 20 tubes was subdivided; 10 samples of each length had MTA placed and condensed by the hand method and the other 10 by the ultrasonic method. After condensation the samples were evaluated with a light microscope and radiographs for the degree of adaptation of the MTA to the tube walls and for the presence of voids within the MTA material itself. The results demonstrated an 80% agreement for findings between the light microscopy and radiographic evaluation. Hand condensation resulted in better adaptation to the tube walls and less voids than the ultrasonic method. There was no significant difference in the results for any of the four lengths of MTA placed by the hand method (p > 0.9). At this time hand condensation should be considered the preferred method for placement of MTA.

Use of mineral trioxide aggregate in the open apex of a maxillary first premolar

“…Hachmeister et al also found that the sealing ability of MTA is superior when used as an orthograde apical plug (4). Aminoshariae et al reported that hand condensation resulted in better adaptation and fewer voids than the ultrasonic method (11). In the present case, the MTA mixture was applied with a small plugger to the wall of the root-canal system to prevent extrusion of the material and the final adjustment was done with light force using the back end of sterilized paper points with the aid of the radiograph.…”

Mineral Trioxide Aggregate Versus Biodentine as Retrograde Filling Material- A Clinical Review

“…Valois et al (2004) 26 concluded for a better sealing ability, 4 mm thickness of MTA is required. Aminoshariae et al (2003) 27 showed that hand condensation was better than ultrasonic method as the MTA has a better adaptation to the walls with less voids in it.…”

A gas adsorption porosimetry analysis of Portland cement prepared by compaction vs. compaction with indirect ultrasonic agitation

“…as bases under other re--storative dental materials). Some have pro--posed the use of Portland cement as an in--expensive alternative to other more expen--sive dental restorative materials for restora--tion of coronal defects [13], with potential uses in economically challenged areas. When used in such critical locations, both MTA and Portland cement must withstand compressive forces that could challenge their clinical longevity through time.…”