Pre-prosthetic surgery refers to the preparation of your mouth before the placement of a dental prosthesis such as a partial or full denture. Some patients may require minor oral surgery before receiving dentures to ensure optimal comfort and functionality. Dentures rest on the bone ridge in your mouth, so it is important that this bone is the correct shape and size. When a tooth is extracted, the underlying bone may be uneven or sharp, which can affect how a denture fits. In these cases, the bone may need to be smoothed or reshaped. Occasionally, excess bone or gum tissue must also be removed to allow for the proper seating of the denture.