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A Novel Model for Evaluating the Flow of Endodontic Materials Using Micro-computed Tomography
Mario Tanomaru-Filho1, Fernanda Ferrari Esteves Torres1, Roberta Bosso-Martelo1
1Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, Araraquara, São Paulo, Brazil.
Journal of Endodontics
|March 8, 2017
Summary
A new micro-computed tomographic (μCT) imaging technique effectively evaluated endodontic material flow. Biodentine showed superior filling ability, while Zinc Oxide Eugenol exhibited higher flow by traditional methods.
Area of Science:
- Dental Materials Science
- Endodontics
- Imaging Technology
Background:
- Flow and filling ability are critical properties for endodontic materials.
- Current evaluation methods may not fully capture material performance.
- A novel micro-computed tomographic (μCT) imaging technique was developed.
Purpose of the Study:
- To introduce and validate a new μCT-based technique for assessing the flow of endodontic materials.
- To compare the flow and filling characteristics of MTA-Angelus, Zinc Oxide Eugenol (ZOE), and Biodentine (BIO).
Main Methods:
- A custom glass plate with a central cavity and radiating grooves was used.
- Materials (MTA-Angelus, ZOE, BIO) were subjected to a standardized load (120 g).
- μCT imaging was employed to measure linear flow in grooves and volumetric filling (central and lateral cavities).
- Data were statistically analyzed using ANOVA and Tukey tests.
Main Results:
- ZOE demonstrated the highest flow rate according to the International Standards Organization (ISO) 6876/2002 methodology.
- μCT analysis revealed comparable linear flow for MTA-Angelus and ZOE in the grooves.
- Biodentine exhibited superior lateral cavity filling (LCF) compared to ZOE.
- Central cavity filling was similar across all tested materials.
Conclusions:
- While ZOE showed greater flow via ISO standards, Biodentine offered superior filling ability.
- The proposed μCT imaging technique provides reproducible and accurate results for endodontic material flow analysis.
- This new μCT method has the potential to enhance the evaluation of endodontic material properties.
