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Biomedical subjects

W Bauer

Publications and source records attributed to W Bauer.

At least 109 records · Page 6Linked to original sources
PubMed1991

[Limitations of intrusion of periodontally involved maxillary buccal teeth for furcation treatment].

In a study on three dogs 12 two-rooted premolars with reduced periodontia were intruded to reestablish marginal attachment. In eight roots intrusion into the basal cortical bone of the nasal sinus was found. The histological findings showed that in these cases a possible gain of new attachment in the interradicular space may be impaired by a loss of bone support in those sites where the root intruded into the sinus. The greater the extent of intrusion into the sinus the higher the expected loss of periodontal attachment.

Alveolar Bone Loss↗
PubMed1991

Percutaneous radiofrequency thermolesion of the sympathetic chain in the treatment of peripheral vascular disease.

Percutaneous radiofrequency thermal lesion of the lumbar sympathetic chain (PRFS) was performed in 30 patients with diabetes mellitus suffering from unreconstractable endstage peripheral vascular disease. All of the patients had the feeling of warmth after PRFS, 45% were free of further complaints and 63% changed to stage II according fontaine. The reported data demonstrate a good comparability concerning amputation after a period of two years to the results obtained by surgical sympathectomy. As there is no need of general anesthesia PRFS turned out to be a good alternative to the surgical sympathectomy.

Adult↗
PubMed1990

[The motivation and assessment of the success of adult patients undergoing orthodontic treatment--the interpretation of a questionnaire].

In order to analyze orthodontic treatment of adults concerning information, motives and retrospective evaluation 225 patients with fixed appliances were questioned. The dentist had a key position as a mediator of information. The decision to an orthodontic treatment was led by esthetic and functional motives. The extent of the respective motives depended from age, personal status, education and cooperation. Interest and understanding in functional improvements as they could be found above all by people with a higher education level were decisive for a durable regard of the treatment.

Adult↗
PubMed1990

[The effect of the maxillary sinus floor on orthodontic tooth movement].

By superimposing 40 pre- und post-therapeutic orthopantomograms the degree of tipping and kind of movement of 87 teeth could be described quantitatively, dependent on configuration and extension of the basal maxillary sinus. It has been shown that, with a more vertical extension (VL = 1) in front of the tooth to be moved one can expect an obviously higher degree of tipping (about 10 degrees) as compared to teeth moved through a more horizontal maxillary sinus base (VL = 2). In the group of teeth VL = 1 a correlation between the depth of the maxillary sinus recessus and the degree of tipping could be found (p less than or equal to 0.05); i.e. the deeper the maxillary sinus recessus, the higher the degree of tipping. For VL = 2 this correlation is statistically not significant. In the group VL = 1 rather a tipping movement, in VL = 2 a translatory movement can be expected.

Adult↗
PubMed1990

[Experimental bodily tooth movement through the bony floor of the nose--a pilot study].

Our experiment on animals was carried out in order to show to which degree the dog's bony nasal floor--taken as an equivalent of the recessus of the human maxillary sinus--is an obstacle to bodily tooth movement. The metric analysis showed that the movement of the upper teeth in comparison with the teeth of the lower jaw was markedly impaired by the basal cortical bone of the cavum nasi. Extended resorption of the basal bone of the nose was found histologically. The pressure side of the root surface too showed resorption lacunae which reached into the dentine deeply and were bordered by some osteoclasts.

Animals↗
PubMed1989

Clinical and histopathological considerations for the diagnosis and treatment of verrucous carcinoma of the larynx.

Verrucous carcinoma of the larynx is quite distinct from well-differentiated squamous cell carcinoma has a characteristic morphology and specific clinical behavior. It accounts for approximately 1%-2% of all laryngeal carcinomas. However, difficulties are encountered clinically in separating verrucous carcinomas from keratoses, verruca vulgaris and squamous cell carcinomas with a verrucous appearance. Between 1962 and 1982, 1504 patients with squamous cell carcinomas of the larynx were diagnosed and treated by staff physicians in the Department of Otolaryngology--Head and Neck Surgery, Washington University in St. Louis. Fifteen of these patients (1%) had verrucous carcinomas. These cases were studied in order to clarify any diagnostic problems, trace the biologic behavior of the tumors and report the results of the treatment used. Of these 15 patients, we were able to follow up 8. The latter had been treated only with surgery and none of them had received radiotherapy. One death occurred, but the patient died of other causes and remained free of cancer. Reports in the literature describe a high rate of recurrence of verrucous carcinomas following radiotherapy with occasional anaplastic transformation of tumors. No patients in our series developed a metastasis in the neck, indicating that neck dissection is not justified for patients with these neoplasms even though clinically enlarged neck nodes may be present.

Adult↗