RISULTS

The study of results was effected taking in consideration different areas for each condition of load:

-	external surface of the cortical bone
-	interface surface between the cortical and the trabecolous bone
-	diametrical sections of each implants

In all cases, only the tensions in the bone were analysed, referring the study of implant solicitations to another type of analyses. To allow a synthetic vision, here there is the trend of only the "ideal" tension, that is to say a mono-axial tension that indicates the heaviness of the total solicitation state, really described by six components ( normal tensions according the 3 axes and the cutting tensions according the 3 orthogonal plans).
Generally, in both cases the solicitations are enough good distributed in all the analysed portion of bone even though the load was localised. It occurs tensions that could cause the break of the bone only in some very localised points: the interface zone between the screw and the implanted bone in the case of traditional implants and the interface zone between the "clamps" of the bracket and the cortical bone in the 2nd type of implant. In both cases, a little change in the geometry of the model united to a little rounding of the edges would produce important variations, so it isn't possible to do quantitative conclusions, except the possibility to execute a more detailed model when the clinical results advice further studies.
The reached tensional levels are enough similar for the two modalities of operation, however it's possible to find the following differences:

-	the external surface of the cortical bone is more loaded in the case of bracket implant because the brackets directly put on this surface, however "dangerous" tensions don't occur thanks to the fact that in the model the inferior surface of the bracket perfectly copies the surface of the bone.
-	The trabecolous bone is less loaded in correspondence of the interface surface with the cortical bone because the cortical bone, having a higher rigidity, supports most of load. In the case of bracket implants, concentrations of tensions could occur where the screws, obliquely implanted, bore the trabecola bone to place than, on the cortical bone; the tensions, however, have a modest entity.
-	for what regards the sections, the tension values are similar in the two extreme sections, whereas for what regards the two "internal" sections, in the case of traditional implants, important concentrations of tension occur where the screw goes in the cortical bone, in correspondence of the discontinuity between the original cortical bone and the implanted bone and in correspondence of the distal extremity of the screw.

- Only vertical load equal to 200 N
- Vertical load equal to 200N + horizontal load equal to 40 N
- Final table