Virus-associated dysplasia (bowenoid papulosis?) of the oral cavity.

We are presenting a case of multifocal, virus-associated dysplasia of the oral cavity. We believe this case represents bowenoid papulosis, which usually is limited to the genital region. The patient, a 21-year-old white man, had recently completed therapy for Hodgkin's disease.

Well-circumscribed mixed-density lesion coronal to an unerupted permanent tooth.

The case reported is that of an ameloblastic fibro-odontoma in an 11-year-old male. The radiographic and clinical findings were typical, appearing as a well-defined radiolucent-radiopaque lesion coronal to an erupting permanent tooth. Treatment consisted of surgical removal (enucleation) of the hard and soft tissue mass.

A photoelastic study of stress induced by framework design in a maxillary resection.

Support of a framework and obturator in a patient with an acquired maxillary defect is diminished by the removal of a portion of the palate and alveolar bone. The intent of this study was to investigate, by three-dimensional photoelastic analysis, the stress transmission that occurs with four commonly used retentive systems. The individual designs were facial cast circumferential retention with palatal plating, swing-lock design with palatal plating, facial cast circumferential retention and palatal cast circumferential clasp reciprocation, and facial cast circumferential reciprocation with palatal I-bar retention.

Metastatic adenocarcinoma of the colon presenting as periradicular periodontal disease: a case report.

Metastases to the jaws account for only 1% of all malignant tumors of the oral cavity. Consequently the diagnosis of metastasis to the mandible requires a high degree of clinical suspicion and the use of a systematic diagnostic approach. In this case report a patient sought treatment for what appeared clinically and radiographically as periradicular periodontal disease.

Measuring fracture toughness of high-impact poly(methyl methacrylate) with the short rod method.

A comparison between the plane strain fracture resistance (Klc) of high-impact PMMA and conventional resins was made. Because microcracks and surface irregularities can be introduced when PMMA is cut, a specially designed sample-forming device that processed specimens with a minimal amount of machining was used. Specimens were made in the final shape of short rods as proposed by Barker and Barker and Baratta.

Antigenicity of freeze-dried cortical bone allograft in human periodontal osseous defects.

The purpose of this investigation was to determine whether donor-specific anti-HLA antibodies could be detected against freeze-dried cortical bone allograft (FDBA) placed in human periodontal osseous defects. Twenty patients with multiple periodontal bony defects amenable to treatment in two allografting procedures were enrolled. No patient had pre-existing anti-HLA antibodies.

The patient with chronic renal failure who is undergoing dialysis or renal transplantation: another consideration for antimicrobial prophylaxis.

A patient with chronic renal failure who is undergoing dialysis or renal transplantation is susceptible to a number of infections. Transient, usually asymptomatic bacteremias occur in a wide variety of dental manipulations, particularly those involving the mucous membranes. Certain bacteremias may cause serious complications in these already compromised patients.

Glossodynia, iron deficiency anemia, and gastrointestinal malignancy. Report of a case.

A postmenopausal woman was referred by a medical specialist for the evaluation of xerostomia and glossodynia. An ensuing oral diagnostic workup showed that the patient was suffering from iron deficiency anemia secondary to blood loss caused by a tumor in the large intestine. The original oral symptoms resolved after a right hemicolectomy.

tri-n-Butyltin: a membrane toxicant.

Increased use of the biocidal compound tri-n-butyltin (TBT) in antifouling paints has prompted research aimed at determining the mechanism for TBT toxicity. Past investigations indicate that the primary cellular target for TBT is the cell membrane. Erythrocyte suspensions treated with TBT concentrations 2 greater than or equal to 5 microM undergo hemolysis described by a sigmoidal kinetic pattern.