[The use of the "cine-technic" in the MRT diagnosis of the temporomandibular joint].

A new cine-technique in a prospective study using rapid gradient echo sequences was evaluated for the MRT investigation of the temporo-mandibular joint. A newly developed hydraulic apparatus was used to produce progressive opening of the jaw and MRT appearances were recorded during predetermined points of mandibular movement. The investigation included 16 normals and 34 patients.

[MR tomographic diagnosis of internal derangement of the temporomandibular joint].

On the basis of MR imaging studies in 150 temporomandibular joints (TMJ) a classification system for internal derangement of the TMJ was defined. Clinically, internal derangement is characterized by disc displacement and disorders of the mandibular condyle. MR imaging enables a differentiation of early stages (I,II) with disc displacement, the intermediate stage (III), and the later stages (IV,V) with osseous destruction.

[Biodegradable gentamicin-depot implants made of beta-tricalcium phosphate ceramics. 3. In vivo studies on drug release, tissue tolerance, and biodegradation].

In vivo drug release properties and biocompatibility of gentamicin-loaded controlled release implants made of beta-tricalcium phosphate ceramics designed for the local antibiotic treatment of bone infections were investigated. Controlled release pellets containing 0.4 and 0.

Growth of vascularized composite mandibular allografts in young rabbits.

Forty-one hemimandible allografts were transplanted in young rabbits immunosuppressed with cyclosporine. The majority of the grafts demonstrated normal wound healing, and growth of hair, bone, and teeth. The mandibular body and the premolars showed significant growth in length.

Transplantation of vascularized composite mandibular allografts in young cynomolgus monkeys.

In the search for donor tissue for massive craniofacial defects, the transplantation of somatic tissue allografts was explored. Four young, out-bred cynomolgus monkeys were the recipients of orthotopic hemimandibular allotransplants from nonrelated cynomolgus monkeys. The transplant consisted of one-half of the mandible with attached muscle, skin, and mucosa.