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.
Implant used for skeletal anchorage offers clinical advantage of being smaller in size, ease of insertion and removal, the ability to load forces immediately and rapid healing. The risk of injury to dental roots during placement is one of the greatest concerns with implant especially when they are inserted between teeth.
Placement of implant to close to the root can also result in insufficient bone remodeling around the screw and transmission of occlusal forces through the teeth to the screw which can lead to implant failure. Therefore it is important to select insertion site carefully using clinical and radiographic evaluation. Many techniques have been used to facilitate safe placement of implant. Some or the others may be inconsistent in different radiographic view.
This article introduces a three-dimensional (3D) wire grid which is simple, reliable and accurate for placing implant in a single step which improves the insertion success rate.
How to cite this article
Sharma NS, Shrivastav SS, Hazarey PV, Kamble RH, Sharma PN. Universal Wire Grid for Implant Placement in Three Dimensions. World J Dent 2013;4(1): 74-76.
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