The preprosthetic surgery deals with the preparation of the oral cavity tissue to a prosthetic. These interventions are already beginning for example, extractions, taking into careful care of extraction wounds or in relation to the implant, where the socket with a bone 
filled, so that they will then not as strong during the healing of mind. Continue to include corrections 
n of the lips, tongue and cheek straps to these treatments. Mainly it is the responsibility of preprosthetic surgery to ensure, by relative and absolute increase in the ridges that both total and partial dentures as a larger seating surfaces thus created a better seal found on the Kieferkämen. First, such increases can be achieved by lowering the mucous membranes of the outer surface of the mandibular alveolar process and also lower the floor of the mouth (Fig. 1a, 1b).
Figure 1a: mucosal relief before shifting
This measure, however, draw more significant change to the prosthesis to adapt to new conditions for themselves. The absolute Alveolarkammerhöhung exists in a superposition of body (cartilage or bone, Fig 2b) or Fremdmateri 
al (alloplastic bone substitute material, Fig 3a, b) to the R 
estkiefer, so that the offers by the increase of the denture a larger area.
Figure 2a: Diagram of a plastic sandwich in the mandible,
the transplanted Knochenzwischen the split jaw shares to lie in the will.
Always a Preprosthetic consists of surgery,
Immediatversorgung with a modified temporary prosthesis and a new prosthesis that is adapted to the changed jaw anatomy. The operations for these corrections are very complex and not consistent with prosthetic rework by the dentist usually with little success.
In this day and age this kind of operations by the dental implant has fallen sharply. With implants, there are no contraindications for the implantation of any prosthesis to be anchored in a simpler way with the additional advantage of longer shelf life in the jaw
