Force generation by orthodontic samarium cobalt and neodymium iron boron magnets at various distances-an Invitro study.
Journal Title: International Journal of Dental Science and Innovative Research (IJDSIR) - Year 2019, Vol 2, Issue 3
Abstract
AIM: To evaluate and compare the attractive and repulsive force values in Neodymium iron boron and Samarium cobalt magnets of different sizes at various distances. Materials and Methods: 168 cylindrical magnets each of neodymium iron boron and Samarium cobalt were procured and were grouped as Group I and Group II and further subdivided into A, B and C for 10x3mm, 6x3mm and 4x4mm sizes respectively. The force of attraction and repulsion was measured using the Instron Universal testing Machine. Results: The force was measured at nine specified distances and the readings obtained were statistically analysed using unpaired t test. Both the magnets of 4x4mm size when subjected to attraction and repulsive force at 10mm to 20mm distance apart could not generate any force suggesting lacking in ability to generate any force at that distance and above. Conclusion: The study showed that Neodymium iron boron magnets had higher force values for both attraction and repulsion for all the sizes ranging from 943.01-24.13gms.Samarium cobalt magnets had also generated significant force value ranging from 738-11.39gms for both attraction and repulsion. All the force values produced by these magnets can be used for orthodontic treatment either for orthopaedic correction or orthodontic tooth movement.
Authors and Affiliations
Eunice John
Keywords
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