The two different variations of the plain-distractor
There are two possibilities: one-step or two-steps procedure.
• The one-step procedure is recommended to keep the plain-distractor in place. In this case the distractor is constructed withinterrupted plains, which guarantees an osteointegration. In this case the device is shaped with a central vertical post. After a complete osteointegration the vertical part can be used as a prosthetic post by screwing an abutment.
• The two-steps procedure demands a non-osteointegration distraction device with flat non-interrupted plains. To avoid interfering with the callus it calls for an eccentric shape of the device with fork-like plains, open in the direction of the spongiosa. The basal plain of the distractor is recommended to be bigger than the transport plain. The sharp angles of the basal plain guarantees a fixation like a pressfit, even if both parts are incorporated in the horizontal osteotomy. In these special cases it is recommended that the vertical osteotomies be cut at a smaller distance to each other, smaller than the total width of the basal part. This handling supports the pressfit.
• The one-step procedure is recommended to keep the plain-distractor in place. In this case the distractor is constructed withinterrupted plains, which guarantees an osteointegration. In this case the device is shaped with a central vertical post. After a complete osteointegration the vertical part can be used as a prosthetic post by screwing an abutment.
• The two-steps procedure demands a non-osteointegration distraction device with flat non-interrupted plains. To avoid interfering with the callus it calls for an eccentric shape of the device with fork-like plains, open in the direction of the spongiosa. The basal plain of the distractor is recommended to be bigger than the transport plain. The sharp angles of the basal plain guarantees a fixation like a pressfit, even if both parts are incorporated in the horizontal osteotomy. In these special cases it is recommended that the vertical osteotomies be cut at a smaller distance to each other, smaller than the total width of the basal part. This handling supports the pressfit.