The effect of permanent magnet connecting with dental implant on distribution and attachment of osteoblast around the dental implant

The effect of permanent magnet connecting with dental implant on distribution and attachment of osteoblast around the dental implant
(March 10-13, 2004)
N.H.Oh*, B.B.Choi, S.B. Lee (Department of Prosthodontics, Division of Dentistry, Graduate School, Kyung Hee University, Korea)
IADR/AADR/CADR 82nd General Session
Objectives:The purpose of this research is to find the effect of rare earth magnet's magnetic field of to the osteoblast around the implant by the means of observation number,and distribution of the osteoblast around the implant which is connected to the permanent magnet but not, counted and compared by the number of cells attached to the surface of the implant. Methods:We connected the permanent magnet, made in the healing cap form, to the implant fixture, placed it on the culture plate, and cultured the osteoblast-like cell: MC3T3-E1. We also used the implant connected to normal healing cap as the control group, and cultured it in the same conditions. 48 hours later, using inverted microscope, we observed the number and distribution of osteoblast around the implant, and 72 hours later, we counted the number of the cells attached to the implant. Results:The implant connected to the permanent magnet had proved to have a more concentrated cell distribution rate than the control group. The implant connected to the permanent magnet, neck area: which has about 10 gauss magnetic force, had more cells than apex area. The implant connected to the permanent magnet had proven to attach to the osteoblast more productively thancontrol group's implant. Conclusion:This research proved that the magnetic field of the permanent magnet affected the distribution and growth rate of the osteoblastaround the implant. In order to support our research, we also monitored the progress of the permanent magnet specifically shown on the neck area, which has10 gauss magnetic force. So after additional research on the distribution and attachment of the cells, and further more, on bone formation, we can conclude its possibility of clinical application on immediate loading of implant treatment.