In vitro evaluation of the physical characteristics and push-out bond strength of new experimental nano-MTA
Abstract Background This research assessed two materials to be used as endodontic sealing material. The setting time, pH change, calcium ions release, microhardness and push-out bond strength were compared. Methods In this in vitro experimental study, comparison was done between: one commercial perf...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-12-01
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| Series: | Bulletin of the National Research Centre |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s42269-024-01290-3 |
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| Summary: | Abstract Background This research assessed two materials to be used as endodontic sealing material. The setting time, pH change, calcium ions release, microhardness and push-out bond strength were compared. Methods In this in vitro experimental study, comparison was done between: one commercial perforation repair material MTA Angelus and experimental Nano-MTA. For each material, testing for setting time was done using Vicat apparatus, measurement of pH values was established by pH meter, the discharged calcium ions were measured at 1 day, 1 week and 4 weeks post setting via Spectro-photo-meter, three diagonal indentations were created at each specimen surface using Vickers hardness machine. Two groups (n = 10) of maxillary central incisors were used according to the type of root-end filling material. To determine the bond strength, the universal testing apparatus was used. The de-bonded specimens were examined under the stereo-microscope to assess fracture mode. Results Nano-MTA and MTA angelus were similar in pH change, setting time and push-out strength records. The nano-MTA group showed significantly higher microhardness and Ca ion release. Conclusions Under the parameters of the current investigation, we can conclude that the physical properties of Nano-MTA and commercially available MTA cement (MTA-Angelus) are comparable. Nano-MTA showed higher hardness properties and higher Ca ions release than MTA-Angelus, which could be considered as a potential property to be used as a dentin repair and root-end filling material. |
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| ISSN: | 2522-8307 |