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Biomedical subjects

P K Hardman

Publications and source records attributed to P K Hardman.

11 recordsLinked to original sources
PubMed1990

The incidence and prevalence of hepatitis B surface antibody in a dental school population.

A study was undertaken to determine whether the prevalence of hepatitis B surface antibody (anti-HBs) increased among students in a dental school after exposure to patients. Predoctoral students were followed during their 4 years of dental school. An anti-HBs determination was made before patient contact and again just before graduation. Of the 247 predoctoral students initially tested, 6.1% were found to be anti-HBs positive. Of these only 145 students were tested again before graduation; four (2.8%0 who were initially anti-HBs negative seroconverted during the testing period. In addition, 31 staff, 73 graduate students and faculty, and 21 dental hygiene students were also tested for anti-HBs seroprevalence. This single test revealed 6.5% of the staff, 8.2% of the graduate students and faculty, and 4.8% of the hygienists to have the positive marker.

Adult↗
PubMed1989

The effects of diet and sublingual provocative testing on eye movements with dyslexic individuals.

A double blind study was conducted utilizing the EDL/Biometrics Reading Eye Camera to determine if poor diets and altered reactions could have a detrimental effect on the eye movements of a group of dyslexic individuals. The study found that a poor diet, high in sugar, and a provocative challenge of cane sugar caused more erratic eye movements, while a good diet, without sugar, caused "normal" eye movements for the dyslexic individuals.

Adolescent↗
PubMed1989

Infection control in dental school radiology.

U.S. and Canadian dental schools were surveyed concerning infection control practices in dental radiology. The majority of respondents reported surface disinfection of intraoral projection operatories (55 percent) and panoramic operatories (61 percent) before or after each patient. The most frequently used surface disinfectant was iodophor. Most schools routinely disinfected the x-ray cone (89 percent) and tubehead (87 percent) of intraoral x-ray machines; however, many did not disinfect the control panel (44 percent) or the exposure button (27 percent). Although 100 percent of respondents reported student use of disposable latex gloves when exposing intraoral radiographs, 27 percent did not use gloves when processing radiographs. Fifty-six percent did not routinely disinfect countertops in the darkroom.

Canada↗
PubMed1987

Radiographic solution contamination.

Contamination of processor solutions adversely affects the image quality of radiographic films. The purpose of this study was to determine the amount of developer or fixer contaminant that was necessary to produce a significant densitometric change in the base plus fog, speed, or contrast optical density readings for panoramic film. Significant differences in base plus fog (after 16 mL of fixer contaminant was added to developer), speed index (after 4 mL), and contrast index (after 8 mL) were observed in comparison with control values.

Chemical Phenomena↗