[Calibrated autologous bone grafts--their use in oral implantology. Widening--crest augmentation. Personal technic].

Using special trephines moved by a rotary motor, corticospongy graded-cylindrical grafts can be obtained from the iliac crest. These grafts are used to maintain widened and raised maxillary or mandibular crests. Inserted between type Brane-mark implants is useful to increase the height of the alveolar process when it is impossible to implant. Surgical trauma is limited compared with other Lefort 1 type operations advocated for the same indication. Operative effects resolve quickly and patients are hospitalized less than two days. The entire process is quite economical.