PubMed Health⌕ Search

Biomedical subjects

N Schwenzer

Publications and source records attributed to N Schwenzer.

At least 19 recordsLinked to original sources
PubMed1992

[Oral leukoplakias--a histopathological and retrospective study].

In a retrospective study 85 patients of our department with clinical oral leukoplakia occurring between 1980 and 1985 were checked histologically and reclassified. Compared to other studies and unusual high malignant transformation rate (14.1%) was found which seemed to be depended on the high rate of radiated patients. Four of twelve patients were healed due to early diagnosis and radical surgery performed consecutively. Using these data as a basis the different courses and therapies are demonstrated.

Adult↗
PubMed1992

[The melanotic neuroectodermal tumor of childhood. Tumor identification with immunohistochemical methods. A case report].

The authors report a case of a melanotic neuroectodermal tumor of infancy occurring in the maxilla of a 6-month-old female infant. The tumor displayed a biphasic cellular pattern with small neuroblast-like cells and large melanocytic cells showing a highly characteristic immunophenotype. Both tumor cell types immunostained for neuron specific enolase (NSE) and vimentin. The melanocytoid cells reacted additionally with the anti-keratin antibody Kl 1 and with HMB 45, an antibody specific for melanocytic antigens. The melanotic neuroectodermal tumor of infancy usually runs a benign course, however, local recurrence and metastasis may occur. The course of the disease cannot be predicted from morphological findings.

Female↗
PubMed1991

[Treatment of keratocysts in deciduous and mixed dentitions].

A survey is given of patients with odontogenic keratocysts in childhood and adolescence which were treated at the Clinic for Maxillofacial Surgery Tübingen in the last 10 years. Odontogenic keratocysts occurring in the growth period are treated in most cases by enucleation or partial marsupialization. To avoid damaging the nerve or dental germs, fixation with Carnoy's solution is not performed. In a second part an experimental study dealing with the effects of Carnoy's solution on peripheral nerves is presented. After incubating the sciatic nerve of rats with Carnoy's solution lumbar SEP, M-response and Hoffmann's reflex were recorded. It was possible to demonstrate the detrimental effect of Carnoy's solution on peripheral nerves. After incubation periods of more than 2 minutes almost complete functional loss was observed. There was a strong correlation between electrophysiological and histological findings.

Acetates↗
PubMed1991

[Radiological findings in therapy planning and follow-up control of fibrous dysplasia].

25 patients with fibrous dysplasia have been treated surgically between 1980 and 1989. For monostotic manifestations which occurred mostly in the lower jaw, as well as for the follow up control, the conventional x-ray examination beneath anamnestic data was sufficient. Polyostotic extracranial lesions have mainly been diagnosed by scintigraphy. For exact statements about the extend and the involvement of functionally important structures, specially in the orbital and skull base region, CT proved to be the most effective diagnostic method by showing simultaneously bony and soft tissue structures. To our knowledge not yet described in the literature, we diagnosed a manifestation of several cervical vertebrae in one case.

Adolescent↗
PubMed1991

[Clinical comparison of Xylonest-Octapressin and Scandicain].

The local anaesthetics Xylonest 3% Octapressin and Scandicain have been clinically tested in a series of 220 consecutive patients. Both drugs were well tolerated. Xylonest gives an effect of middle long duration and produces sufficient ischaemia (1 hour). Scandicain is well suited for short interventions. Both drugs can be used in risk patients.

Anesthesia, Dental↗
PubMed1991

[Differential diagnosis of lytic lesions of the jaw].

Using typical CT-pictures the different types of jaw cysts are classified, the characteristic findings of the individual cyst types emphasised and the differential diagnosis discussed. High-resolution-CT can be highly informative and of special value in the diagnosis and assessment of expanding and infiltrating lesions of the jaws.

Diagnosis, Differential↗
PubMed1990

[The treatment of children with cheilognathopalatoschisis--a contribution to psychosocial rehabilitation].

The long-term treatment of cleft palate patients starts immediately after birth and is pursued in orderly fashion [correction of persecuted orderly] to adolescence. The results of anonymous survey of the opinion of parents of cleft palate children who undergo or underwent early treatment procedures, up to seven years of age, are presented. Questions concerned mother's or parent's experience of birth, first medical information, early orthopedic care and treatment, and psychosocial adjustment of the children as well. This study suggests that objective findings in children and subjective conditions of parents do not correlate in the beginning, as is to be seen in cleft palate versus cleft lip palate group. One other conclusion indicates the existence of a small quantity of parents able to accept their affected child without additional problems arising from the cleft.

Adult↗
PubMed1990

[Developmental disorders of the permanent dentition following fractures of the visceral cranium during the growth period. Incidence and morphological findings].

The retrospective examination of 70 patients who had suffered fractures in tooth-bearing segments of the maxilla and the mandible when they were between one and twelve years old revealed a high incidence of late pathologic changes (in 39 out of 70). Disorders in odontogeny, eruption of the teeth and occlusion were observed. Primary and secondary loss of teeth did also occur. Our results show the necessity to inform both the young patients and their parents about the high incidence of late changes after jaw fractures in childhood. An effective recall-system is required in order to diagnose and treat such changes as soon as possible.

Child↗
PubMed1990

[Treatment of implant-induced pain conditions in the maxillofacial area].

The implantation of dental implants may lead to severe pain syndromes (not reckoning postoperative pain and discomfort). Pain in the upper jaw is usually caused by inflammations like sinusitis, often in combination with an oroantral communication, rhinitis and osteitis, whereas pain in the lower jaw is often caused by injuries of sensitive branches of the mandibular nerve, mostly the inferior alveolar nerve. In these cases the therapy of pain should be causal, which means removal of the implant and treatment of the pathologic consequences of implantation. Especially the possibilities of micronerval surgery are emphasized within this article.

Dental Implantation, Endosseous↗
PubMed1979

[Surgical therapy of odontogenic maxillary sinusitis. Report on 397 cases].

Operative procedures were carried out on 410 maxillary sinuses in 397 patients. The most frequent indications for surgery were communication between the mouth and the atrium (55.4%) and cysts (24.2%). A Caldwell-Luc operation was carried out in 76.6% of the cases (radical operation). Vestibulum-cheek flaps were used to close the fistula in 97% of the cases. A follow-up examination of 220 patients showed that 10.2% complained of pain. The indications for surgery were limited to avoid this lasting damage.

Adolescent↗