The Use of Magnets in Orthodontics

Abstract

Magnets have generated great interest within dentistry. They have been used for various applications in orthodontics and prosthodontics. Earlier use of magnets was limited due to the unavailability of small size magnets, but after the introduction of rare earth magnets and their availability in smaller sizes, their use has increased considerably. The force they deliver can be directed, and they can exert their force through mucosa and bone as well as within the mouth. In orthodontics, they are used for intrusion of teeth, tooth movement along archwires, expansion, retention, in functional appliances and in the treatment of impacted teeth. There are various types of magnets used in the field of orthodontics with their advantages and disadvantages, along with their biological safety which has been discussed in this article. This article reviews various uses of magnets in the field of orthodontics. How to cite this article Sharma N, Shrivastav S, Kamble RH, Sharma P. The Use of Magnets in Orthodontics. World J Dent 2015;6(1):45-48.

Disparate knack in Orthodontics: Magnets an overview

“…No definite classification of magnets has been given in the literature. Hence, an effort was made to combine different types mentioned in various articles 6 to develop a simplified classification system of magnets used in dentistry.…”

CLINICAL ANALYSIS OF BLOOD TRACES OF RATS AFTER SUBCUTANEOUS IMPLANTATION OF Nd-Fe-B MAGNETS WITH PROTECTIVE PVD ZrN COATINGS

“…In this case, it is significantly easier to brush teeth by simplifying the design of the device, which reduces the number of additional elements that create retention points, where food residues can accumulate. In addition, in devices with magnets there is a transfer of forces without friction, and it is possible to calculate the magnitude of the force with high accuracy [3]. The most promising magnetic materials for orthodontics are Sm-Co and Nd-Fe-B alloys, which show high forces between magnetic interactions, are quite sufficient for effective movement of teeth in the case of small size (volume) of the magnets themselves [4].…”

Application of Nd-Fe-B Permanent Magnets with Ion-Plasma ZrO2 Coating in Orthodontics

“…2 In addition to bracket systems, the position of individual teeth 3 can also be normalized using devices with permanent magnets. 4,5 In this case the side effects are minimized, 6 and the total cost of treatment is reduced. Currently, there is a lack of information on occlusion correction using magnets or devices with magnets.…”