Investigating incidental remission of subpontic hyperostosis

Article Abstract:

A case report is presented in which a 52-year-old woman developed excessive bone growth under a partial denture in the lower jaw, a condition with many names, among them subpontic osseous proliferation or hyperostosis. The patient had had a fixed partial denture made 21 years earlier to replace one tooth (number 30), after which excessive bone grew and was removed. X-ray examination in 1983 revealed that, once again, excessive bone had grown under the denture. By 1989, the fixed partial denture had fallen out and excessive bone growth was no longer noted. Veneer crowns were made for the adjoining teeth and tooth number 30 was restored with an implant and crown. Subpontic hyperostosis has been described in 29 adults, in all cases developing under the artificial tooth of a fixed partial denture. In two cases the tooth loosened from its attachments, perhaps as a result of pressure from the growing bone. The literature is reviewed briefly. Treatment options are explained. It is possible that the denture was the main cause of the hyperostosis in the case cited, since its loss was associated with remission of the bone changes. Removing partial dentures is another treatment for subpontic hyperostosis. (Consumer Summary produced by Reliance Medical Information, Inc.)

Case studies, Complications and side effects, Exostosis, Hyperostosis, Partial dentures

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Standard equipment cleaning may not protect dental patients

Article Abstract:

University of Georgia microbiologist David Lewis conducted research that indicates that the standard method used to clean dental drill handpieces may not prevent the transmission of HIV and other infectious agents. This device can deposit one patient's tissue and blood into the mouth of another patient unless it is heat-treated. However, many dentists simply wipe the device with a germicidal solution. It is possible that Florida dentist David Acer's patients were infected with HIV through equipment he used on himself.

Health aspects, Research, Practice, HIV (Viruses), HIV, Disease transmission, Dentist and patient, Dentist-patient relations, Dental equipment and supplies, Dental equipment, Sterilization (Disinfection), Lewis, David (Canadian politician), Acer, David J.

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ANSI Z9 investigating development of a new IAQ standard

Article Abstract:

Occupational health and safety professionals could derive substantial benefits from the new standard being considered by the ANSI Z9 Committee (ventilation). This standard would cover basic issues concerning the management, functioning and testing of heating, ventilation and air conditioning systems.

Standards, Heating, ventilation, and air conditioning industry, HVAC industry

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