Eigene Erfahrungen bei der Behandlung mit Funktionsreglern Typ I nach Fränkel

Zusammenfassung Auf Grund eigener Erfahrungen wird festgestellt, daß die Behandlungsweise nach Fränkel erst seit Propagierung der skelettierten Funktionsregler mit Aussicht auf Erfolg anwendbar ist. Es wird über gute Erfahrungen bei der Versorgung von 43 Patienten berichtet, welche wegen eines Schmalkiefers mit frontalem Engstand, eines Schmalkiefers mit engstehender oder lückiger Protrusion oder wegen eines genuinen Distalbisses in Behandlung standen und teilweise noch stehen.Mit 12 Abbildungen     

Die Beziehungen der Zunge zum normalen und gestörten Wachstum des Unterkiefers

Ohne ZusammenfassungMit 98 AbbildungenFür den Unterkiefer fehlt es vorläufig an allen genaueren Untersuchungen über den Modus seines späteren Wachstums. Offenbar kann der Typus eines Röhrenknochens beim Unterkiefer nicht einfach in Anwendung kommen (R. Virchow, in Virchows Arch. path. Anat. 1858).Preisarbeit der Deutschen Gesellschaft für Kieferorthopädie 1960.     

The effects of short-term application of a combination of platelet-derived and insulin-like growth factors on periodontal wound healing

Polypeptide growth factors are a class of potent natural biologic mediators which regulate many of the activities of wound healing including cell proliferation, migration, and metabolism. Platelet-derived growth factor (PDGF) and insulin-like growth factor-I (IGF-I) have been shown to regulate DNA and protein synthesis in bone cells in vitro and to interact synergistically to enhance soft tissue wound healing in vivo. We have hypothesized that the combination of PDGF and IGF-I may, therefore, enhance regeneration of both the soft and hard tissue components of the periodontium. To test this hypothesis we performed conventional periodontal surgery on all 4 quadrants of the mouth of 13 beagle dogs with naturally occurring periodontal disease. Following flap reflection, degranulation, and root planing, all premolar teeth in 2 quadrants of each dog received a combination of 3 micrograms of recombinant PDGF-B and IGF-I in a methylcellulose gel, while the premolar teeth in the contralateral quadrants received the gel alone. Teeth in 4 additional animals also received 125I-PDGF or 125I-IGF-I in the treated sites. The clearance rate of the 125I-labeled protein, changes in local bone metabolism, and amount of new bone and cementum with inserting collagen fibers were measured. The clearance studies revealed that the half-life of the factors at the site of application was 3.0 hours for IGF-I and to 4.2 hours for PDGF-B. Greater than 96% of the radio-labeled proteins was cleared by 96 hours and no radioactivity was detected 2 weeks after application. There was a significant (P less than 0.01) 2-fold increase in uptake of the bone-seeking radiopharmaceutical Technetium 99-MDP at 2 and 4 weeks in growth factor treated sites compared to controls, indicating that there was increased metabolic activity within the bone at these sites. Computer-aided histologic analyses of biopsies obtained at 2 and 5 weeks post-operatively revealed a significant (P less than 0.01), 5 to 10 fold increase in new bone and cementum in PDGF-B/IGF-I treated sites at both time points compared to controls receiving the placebo gel. The height and total area of new bone continued to increase from 2 to 5 weeks. The new bone underwent a normal maturation process as judged by histologic appearance. A physiologic periodontal ligament space was also formed between the new bone and new cementum. There was no increase in ankylosis in the treated sites.(ABSTRACT TRUNCATED AT 400 WORDS)     

Autotransplantation using endosseous implants as stabilizers

The surgical transfer of a tooth from one site to another in the same individual is known as autotransplantation. Usually the tooth transferred is an unerupted or partially erupted third molar which is placed into a first molar position with some external fixation. In this case report, the first molar was already missing and the second molar was hopeless. An erupted third molar was autotransplanted into the second molar site and endosseous implants were used to stabilize the tooth. A fixed bridge was placed 6 months later and the progress followed for 4 yr.     

Gingival enhancement in fixed prosthodontics. Part I: Clinical findings

This study assessed the efficacy of a 0.12% chlorhexidine gluconate (CHX) rinse on the enhancement and maintenance of gingival health in patients receiving fixed prosthodontic treatment. Thirty patient participants in this examiner blind study were randomly assigned into two groups, one control and another group using CHX 15 ml b.i.d. in addition to normal oral hygiene. The medication was used for 2 weeks prior to crown preparation, 3 weeks during provisional crown placement, and 2 weeks after definitive crown cementation. Plaque and gingivitis indices were measured initially and at the three aforementioned points during the 7-week period. The plaque index for the control group decreased by 0.26 units; CHX decreased by 0.63 units at 7 weeks. The gingival index of the control group decreased by 0.37 units; CHX decreased by 0.87 units. Adjunctive use of chlorhexidine with fixed prosthodontic procedures significantly reduced plaque levels and significantly improved gingival health compared with the control patients. Fixed prosthodontic procedures alone decreased plaque levels and increased gingival health.