Basic ResearchThe Effect of Various Mixing and Placement Techniques on the Compressive Strength of Mineral Trioxide Aggregate
Section snippets
Materials and Methods
The parameter investigated was compressive strength, and the materials investigated were tooth-colored ProRoot MTA (Dentsply Maillefer, Ballaigues, Switzerland) and white MTA Angelus (Angelus Soluções Odontologicas, Londrina, Brazil).
Results
The minimum and maximum values, means, and standard deviations of the compressive strength of the groups are shown in Table 1. Overall, the compressive strength values of ProRoot MTA (mean = 93.38 ± 26.27 MPa) were significantly greater than those of MTA Angelus (mean = 65.06 ± 25.54 MPa, P < .05). The highest compressive strength values were recorded for ProRoot MTA samples that were mechanically mixed and placed with ultrasonic activation (mean = 101.71 MPa), whereas the lowest values were
Discussion
The effect of manual mixing, mechanical mixing of encapsulated MTA, and ultrasonic agitation on the compressive strength of 2 different brands of MTA was evaluated in the present study. The results revealed that mechanically mixed MTA had higher compressive strength values than those mixed manually, and the compressive strength values of ProRoot MTA were significantly greater than those of MTA Angelus.
ProRoot MTA samples that were mechanically mixed and placed with ultrasonic activation had the
Conclusions
The compressive strength values of ProRoot MTA were significantly greater than those of MTA Angelus. Mechanical mixing of encapsulated MTA resulted in higher compressive strength values than those mixed manually. Regardless of the mixing techniques applied, ultrasonic agitation improved the compressive strength of the material.
Acknowledgments
The authors deny any conflicts of interest related to this study.
References (28)
- et al.
Physical and chemical properties of a new root-end filling material
J Endod
(1995) Evaluation of selected properties of mineral trioxide aggregate sealer cement
J Endod
(2009)- et al.
Encapsulated verses hand-mixed zinc phosphate dental cement
Biomaterials
(1999) - et al.
Is encapsulation of posterior glass-ionomer restoratives the solution to clinically induced variability introduced on mixing?
Dent Mater
(2008) - et al.
The sealing ability and retention characteristics of mineral trioxide aggregate in a model of apexification
J Endod
(2002) - et al.
Effects of various mixing techniques on push-out bond strengths of white mineral trioxide aggregate
J Endod
(2012) - et al.
Changes of cement properties caused by mixing errors: the therapeutic range of different cement types
Dent Mater
(2008) - et al.
Comparison of the porosity of hand-mixed and capsulated glass-ionomer luting cements
Biomaterials
(1997) - et al.
Mineral trioxide aggregate (MTA) solubility and porosity with different water-to-powder ratios
J Endod
(2003) - et al.
Chemical modification of ProRoot MTA to improve handling characteristics and decrease setting time
J Endod
(2007)