Читать книгу Bone and Soft Tissue Augmentation in Implantology - Группа авторов - Страница 49

The bone quality of the regenerated area is generally classified as reduced, especially when using biomaterials (xenogenic or allografts). By applying the 3D technique with an intraoral bone transplant, iliac crest reconstruction using monocortical strips, and compressed cancellous bone or distraction osteogenesis, a vital and stable bone bed can be achieved that corresponds to a bone class of D2 or D3. Depending on the bone quality, it is important that dysfunctions are detected early to prevent possible overloading of the implant site due to bruxism.

Determining the bone volume is suitable as an initial and immediately available means to so-called bone mapping. The height of the soft tissue situation is determined with a pointed needle and a rubber stopper. By transferring these measured values to a saw-cut model, the existing bone volume can then be measured (Fig 2-12a and b). This kind of diagnostic measuring is rarely used today due to the increased use of digital diagnostic methods such as cone beam computed tomography (CBCT). The use of appropriately modified calipers has not proven to be successful in clinical practice and therefore they are only of historical significance today.