Chin

Abstract: A tissue approximation device and processes for using the device are provided. The device is an implantable, biodegradable construct that has attachment points emanating from a supportive backing. The device improves the mechanical phase of wound healing and optimally distributes tension over the contact area between the device and tissue. Processes for using the device include soft tissue attachment and soft tissue to bone attachment. Several variations are particularly applicable to facilitating tissue approximation in surgical cosmetic applications, particularly chin lifts. Generally, tissue to be lifted may be set on a chin lift device via attachment points before or after the device is secured to a patient's bone. Variations of the device are described along with a method of installing the chin lift device. Also described is a tool particularly useful for installing a chin lift device.

Abstract: The stability and predictability of orthognathic surgical procedures varies by the direction of surgical movement, the type of fixation, and the surgical technique employed, largely in that order of importance The most stable orthognathic procedure is superior repositioning of the maxilla, closely followed by mandibular advancement in patients in whom anterior facial height is maintained or increased (If facial height is decreased by upward rotation of the chin, stability is compromised) The combination of moving the maxilla upward and the mandible forward is significantly more stable when rigid internal fixation is used in the mandible Forward movement of the maxilla is reasonably stable, with or without rigid internal fixation, but mandibular setback often is not stable, and downward movement of the maxilla that creates downward rotation of the mandible is unstable For mandibular setback, the inclination of the ramus at surgery appears to be an important influence on stability It has been suggested that both interpositional synthetic hydroxyapatite grafting and simultaneous ramus osteotomy improve the stability of downward movement of the maxilla, but this has not been well documented In two-jaw Class III surgery, the stability of each jaw appears to be quite similar to that of isolated maxillary advancement or mandibular setback The least stable orthognathic procedure is transverse expansion of the maxilla Although surgically assisted rapid palatal expansion has been suggested as a more stable alternative to segmental Le Fort I osteotomy, the patterns of movement resulting from the two procedures are different, and differences in stability have not been established

Abstract: BACKGROUND: The placement of endosseous implants in edentulous areas is frequently limited by inadequate bone volume of the residual ridge Local bone grafts from the mandible are a convenient sour