User:Logicwhatelse/sandbox
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A root-analog dental implant (RAI) – also known as a truly anatomic dental implant, or an anatomical/custom implant – is a medical device to replace one or more roots of a single tooth immediately after extraction. In contrast to common off-the-shelf titanium screw type implants, these implants are custom-made to exactly match the extraction socket of the specific patient.
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As the root analog dental implant matches the dental alveolus (tooth socket) it can only be placed in conjunction with the tooth extraction. Thus, if the tooth has been already lost and the soft and hard tissue is already healed a RAI can no longer be placed.
The basic principle of endosseous implants is a biological process described as osseointegration, in which materials such as titanium or ceramic form an intimate bond to bone. There are no particular differences between the osseointegration of a root analog implant and a conventional screw type implant.
The scope of anatomic dental implants is to fit as perfectly as possible into the bony walls of a tooth socket. By adapting the implant to the patient instead of adapting the patient to a rotationally symmetric screw type implant, any surgery on hard or soft tissue, by drilling healthy bone and filling gaps with cadaver bone or artificial bone, is absolutely unnecessary.
So far, only a few study groups are working in this area, and this implant solution is not yet commercially available.