Deutsche Zeitschrift fur Mund-, Kiefer- und Gesichts-Chirurgie最新文献

The causes of TMJ ankylosis after collum mandibulae fractures in the early childhood are discussed and two different surgical treatment approaches are presented. In cases of unilateral involvement it often suffices to separate the ankylosed area while the rest of the joint is spared; where as in cases of pronounced bilateral ankyloses wide reactions with temporary implantation of bone cement are carried out.

A method for the primary reconstruction of the posterior oral cavity following T2 and small T3 tumor surgery is described. The combination of a masseter flap with a cranially pedicled intraoral buccal transposition flap results in a double layer for the repair of defects. Because of its simplicity and hence a shorter operation time, this functionally satisfactory reconstructive procedure should be used particularly for high-risk patients.

In 15 cases ultrasonograms were used to verify the result of a zygomatic fracture reduction and were correlated to conventional x-ray films. Both the pre- and postoperative ultrasonograms demonstrated all fractures of the zygomatic arch. Ultrasonographic imaging of the non-exposed bone surfaces enables the operator to monitor the reduction of zygomatic arch fractures intraoperatively, and thus optimize the treatment results.

Selective embolization using the fast-setting phase of a fibrin adhesive is an improvement in the range of therapeutic options for oral hemangioma. Direct injection of TISSUCOL permits a safe, selective and tissue-sparing operative procedure involving little bleeding and resulting in the complete extirpation of a hemangioma with all the residues.

Recording pathologic mandibular movements is of crucial importance to the diagnosis and treatment of functional disorders of the masticatory system. The electronic computersupported recording system presented in this paper is a diagnostic instrument of extremely high precision. The clinical and scientific applications possible with this system in oral and maxillofacial surgery are discussed.

Human tumor cells from 22 patients with squamous cell carcinomas of the oral cavity were cultivated in vitro and then subjected to sensitivity tests to cytotoxic drugs such as methotrexate, 5-fluorouracil, cisplatin and bleomycin. Tumor cell proliferation showed drug-specific reaction patterns and time-dose-dependent variations. While the effect of methotrexate on cell proliferation was insignificant, 5-fluorouracil caused a growth suppression of 50%. Cisplatin and bleomycin suppressed cell growth by more than 90%.

Despite the advantages of sonography we have only little experience regarding the intraoral use of this technique. The reasons for this are related to the size of the ultrasonic transducers and patient compliance. A new miniaturized transducer system is presented which facilitates intraoral sonography. First results obtained above all in the field of tumor diagnosis are reported.

Following sagittal mandibular osteotomy the mandibles of Class II patients were stabilized using two different fixation techniques. It was the goal of this study to delineate the effects of these two techniques on stability. The patient population was approximately the same on both groups. 1 year after surgery differences in stability were not found. The functional and esthetic results, too, were equal in both groups.

In 150 patients 366 (95%) of 385 dental surgery procedures performed prior to organ transplantations were free of complications. In 6 patients circumscribed wound infections occurred, and 5 post-operative hemorrhages as well as 2 injection hematomas were observed. In the group of patients where dental surgery was performed after organ transplantation, all 123 procedures were free of complications. Treatment of transplantation patients in the dental office requires a profound understanding of the complex clinical problems these patients might present, a good coordination of the required measures and close cooperation between the transplantation center and the attending dentist. Special considerations of the treatment of organ transplantation patients and the indications for dental surgery are discussed.