Update on HIV chemoprophylaxis following exposure.
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Biomedical subjects
Publications and source records attributed to N A Flaxman.
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A variety of metallic objects may be seen on x-ray films of the head, facial structures, neck or chest. Among them are subperiosteal and endosseous implants, used to replace missing or damaged portions of the maxilla or mandible and to anchor dental prostheses. Wires, condylar head and neck replacements, surgical clips and silver amalgam may also be seen.
Current applications and complications in the use of radiotherapy for the treatment of oral malignancy are reviewed. Prostheses are used for decreasing radiation to vital structures not involved with the lesion but located in the field of radiation. With a program of oral hygiene and proper dental care, protective prostheses can help decrease greatly the morbidity seen with existing radiotherapy regimens.
A technique in which a subtraction film mask is used to enhance radiographic detail and provide a balanced density appropriate for purposes of publication is described and examples are illustrated.
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