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Biomedical subjects

P Lenz

Publications and source records attributed to P Lenz.

At least 55 records · Page 3Linked to original sources
PubMed1985

Clinically occult bladder cancer diagnosis. Trial using ultraviolet cystoscopy.

Ultraviolet cystoscopy was used to demonstrate flat cancerous and precancerous bladder lesions by two techniques based on different principles: the loss of epithelium blood group antigenic expression using immunofluorescence reaction, and submucosa neoangiogenesis after fluorescein intravenous injection. The results obtained with these two techniques were disappointing, but do not preclude the use of ultraviolet cystoscopy in this type of study.

ABO Blood-Group System↗
PubMed1983

[Diagnosis and therapy of primary extranodal non-Hodgkin's lymphoma of the stomach].

In the period from 1970-1980 120 patients with NHL were treated. A primary stomach manifestation could be detected in 6.6%. Problems of pre-operative, endoscopic-bioptic diagnostics are discussed and recommendations for a therapeutic proceeding are given. The tumour is surgically removed at stage I and II, which is always followed by polychemotherapy. Primary polychemotherapy is used at stages III and IV. Patients at stage II achieved a complete remission, those at stage IV died within 6 months after diagnosis.

Adult↗
PubMed1982

[The primary malignant non-Hodgkin lymphoma of the stomach].

From 1970 to 1980, 643 patients suffering from a malignancy of the stomach were seen at the Surgical Department of Rostock University. 8 of them were identified to have a Non-Hodgkin lymphoma. Treatment should be done depending on the staging: Stage I and II extirpation of the tumour followed by adjunctive chemotherapy, Stage III and IV primary chemotherapy only.

Adult↗
PubMed1980

[Elasticity of secondary cone crowns made of fusing alloys].

Deformations under stress due to production-related fitting inaccuracies were measured in nonfaced and faced secondary cone crowns. During the tests, four of the 40 tested crowns developed cracks in the ceramic facing. No chipping was observed. Loaded free-end cone crowns withstood 1 mm settling at the distal end of the structure for more than 5,000 stress applications. Defects were first noted when the amount of settling exceeded 1.2 mm.

Biomechanical Phenomena↗
PubMed1978

[VMK conus crowns in a prolonged-use study].

The adhesability and behaviour of ceramic facings of telescoping adhesive elements from baked alloys were tested in prolonged experiments. It was shown that these materials stand up to all requirements if their preparation was properly carried out.

Crowns↗
PubMed1978

[Aspects of orthodontic-prosthetic planning in adults].

The introduction of firm fitting orthodontic appliances has increased considerably the treatment potential of adults. Many aesthetic and functional problems allow a more satisfactory solution through preparatory orthodontic treatment than was possible up to now by prosthetic means. Surgical measures can facilitate and complement this therapy. In addition dental orthopaedic measures must be stabilised by prosthesis for reasons of retention.

Adult↗
PubMed1978

[Precision in fixation and remounting of cast parts].

The exactitude of transferring castings was tested in two currently used methods of casting. Results showed that alginate casting from a remontage matrix and simple casting with IMPREGUM are sufficiently exact for clinical purposes. When the mixing relations between the casting substances is exactly maintained a transfer exactitude of +/- 0.11 is achieved by the methods tested. When there is a change in the relationship of the mixtures deviations of up to 0.20 mm occur.

Alginates↗
PubMed1978

[Soft tissue plastics in treatment of chronic osteomyelitis (author's transl)].

Soft tissue plastics are indispensable in the surgical treatment oft chronic osteomyelitis (56 cases in 10 years). Myoplastics (27 operations) are simple, successful, but only suitable with stabile bones. The treatment of osteomyelitis in the distal parts of the extremities often requires additional skin flaps (25 operations), rarely free skin grafts.

Adipose Tissue↗
PubMed1977

[Supported dentures in the periodontally damaged residual dentition in combination with enosseous implantations].

The use of implants in bone represents an extension of prosthetic possibilities. Clinical cases are used to demonstrate how additional supports can be created by means of implants of Linkow-blades which allow the incorporation of periodontally damaged teeth into prosthetic care. In addition the use of transdental fixation in the stabilisation of badly loosened teeth is pointed out.

Adolescent↗