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Biomedical subjects

E A Lado

Publications and source records attributed to E A Lado.

14 recordsLinked to original sources

Efficacy of various surface disinfectants on an irregular surface.

Representative samples of hard surface disinfectants were tested against Pseudomonas aeruginosa (ATCC 27853) on frosted glass rods. The same protocol was followed by two investigators on 100 rods for each product tested. Results showed Sporicidin surface disinfectant (Ash Dentsply, York, Pa.) and household bleach 1:10 to be most effective against P. aeruginosa. Lysol disinfectant spray (Lehn & Fink Products, Montvale, N.J.), performed similarly whereas Biocide (Biotrol International, Woods Cross, Utah) failed to inhibit growth on more than half of the rods treated. Failure of the iodophor may be attributed to the use of cotton-filled gauze, because cellulose is believed to react with nascent iodine.

Cresols↗

Identification of pathogens in the condensates from air pressure systems in dental offices.

We examined the air pressure systems in 23 dental offices and found growth of Group A Streptococci and/or Staphylococcus Aureus in 91 percent of them. We also examined nine handpiece lines from these 23 offices and found growth of pathogens in 78 percent of them. Correlation of the growth found in the handpiece lines and the growth found in the air pressure tanks needs further study to determine if an interrelationship exists between these two areas of contamination. However, contamination does exist in both areas and these areas deliver contaminated air under pressure to the oral environment. We need to consider mechanisms for filter entrapment or sterilization of these pathogens.

Air Microbiology↗

Evaluation of a prototype CPR assist-tool.

A CPR provider is often called upon to expand considerable physical energy to deliver external cardiac compressions. This research evaluates and compares the performance of recently certified basic rescuers on a mannequin using the standard method of CPR, and the performance with an adjunctive CPR assist-tool. Use of the tool significantly increased the overall quality of individual performances by reducing the frequency of inadequate compressions and increasing the time of acceptable performance. Other common errors were not significantly affected.

Adult↗

In vitro antimicrobial activity of six pulp-capping agents.

The antimicrobial activity of six commonly used pulp-capping agents was compared to reagent Ca(OH)2 by means of an in vitro microbiologic assay. Microbial samples were collected from deep carious lesions in each of twelve teeth and plated onto T-soy blood agar. Uniform disks of each pulp-capping agent were pressed slightly below the surface of each agar dish, and zones of bacterial inhibition were measured at 24 hours to the nearest 0.1 mm. All agents, including IRM, demonstrated significantly more antimicrobial activity than reagent Ca(OH)2 with the exception of Pulpdent. This tends to indicate that the antibacterial properties associated with these capping compounds are not entirely due to the high pH associated with Ca(OH)2.

Bacteria↗

Cervical resorption in bleached teeth.

A case of cervical resorption in a bleached, pulpless tooth is reported. The tooth has not been traumatized, and no other reason for the resorption could be found except the possible effects of a caustic bleaching agent. This case further supports the evidence in the literature that a cause-and-effect relationship exists between Superoxol bleaching and cervical resorption.

Female↗