Helmut H. Lindorf

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During osteoplastic surgery of the maxillary sinus the surgical defect in the lateral wall of the maxillary sinus is re-closed by means of free reimplantation of the "bone lid", which had been temporarily removed together with the integral mucosa, during creation of the access. This "bone lid"-method has so far been employed successfully in approx. 600(More)
Spiessl's traction screw osteosynthesis with compression of the cut surfaces can lead to dislocation of the condyles and crushing of the mandibular nerve in cases of sagittal ramus osteotomy. Such disadvantages can be minimized by joining the bony segments with tandem screws with threads in both parts of the bone. This technique avoids compression at the(More)
For objectifying clinical experience, we measured and compared experimental stimulus thresholds with Ultracain 4% and Xylocain 2% in the upper and lower jaws in double blind tests. By means of electronically controlled rectangular impulses the latent period, depth and duration of anesthesia were registered. Relevant differences were found for plexus(More)
A one-stage surgical correction of gnathic deformities involving both jaws is described. It permits both the establishment of a normal occlusion and correct alignment of the occlusal plane to the skull. The osteotomy commences with the mandible. Its new position is oriented to the (as yet) untouched maxilla with the aid of an intermediate occlusal splint(More)
The purpose of this study was to investigate volume changes in posterior airway space (PAS) after bilateral mandibular advancement surgery. Measurements were taken based on three-dimensional (3D) records available for a large and homogeneous cohort of patients. Pre- and postoperative CBCT scans of 102 adult patients with Class II dysgnathia were visualized(More)
Osteoplasty of the frontal sinus (bone lid operation) consists of the excision of a piece of bone from the anterior surface of the frontal sinus. A circular saw with an extremely fine saw blade is used. The ensuing cut is thus extremely narrow and the excised bone lid can be reimplanted exactly, flush with the neighbouring bone from which it was excised.(More)