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A quantitative comparison of the fill density of MTA produced by two placement techniques
Priscilla Yeung1, Frederick R Liewehr, Peter C Moon
1Virginia Commonwealth University, Richmond, 23298, USA. frliewehr@vcu.edu
Journal of Endodontics
|April 25, 2006
Summary
Indirect ultrasonic activation significantly improves mineral trioxide aggregate (MTA) fill density compared to hand condensation alone. This enhanced density was observed in both straight and curved root canals, suggesting improved material placement in endodontics.
Area of Science:
- Biomaterials Science
- Endodontic Materials
- Dental Materials Science
Background:
- Mineral trioxide aggregate (MTA) is a widely used material in endodontic procedures.
- Achieving optimal fill density of MTA is crucial for its sealing ability and clinical success.
- Current MTA placement techniques, primarily hand condensation, may have limitations in achieving uniform density.
Purpose of the Study:
- To compare the fill density of MTA when placed using hand condensation versus hand condensation with indirect ultrasonic (US) activation.
- To evaluate the effectiveness of indirect ultrasonic activation in enhancing MTA fill density in different canal configurations.
Main Methods:
- Sixty acrylic blocks with straight or curved canals were prepared.
- MTA fill density was assessed by weighing the material placed using hand condensation alone and hand condensation with indirect US activation.
- A two-way ANOVA was used to analyze the weight of MTA fills in straight and curved canals.
Main Results:
- Hand condensation with indirect US activation produced MTA fills that were statistically significantly heavier (denser) than those achieved with hand condensation alone.
- This significant difference in density was observed in both straight and curved canal configurations.
- The p-value was less than 0.0001, indicating a highly significant improvement in MTA density with US activation.
Conclusions:
- Indirect ultrasonic activation is a superior method for achieving denser MTA fills compared to conventional hand condensation.
- This technique offers potential benefits for improving the sealing properties and clinical outcomes of endodontic treatments utilizing MTA.
- Further research may explore the clinical application and long-term effects of US-activated MTA placement.
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