BACKGROUND The orthodontics industry has paid great attention to the aesthetics of orthodontic appliances, seeking to make them as invisible as possible. There are several advantages to clear aligner systems, including aesthetics, comfort, chairside time reduction, and the fact that they can be removed for meals and oral hygiene procedures. METHODS Five patients were each given a series of F2...

OBJECTIVE The objective of this randomized, single-use, single-blind, two-group, parallel clinical trial was to evaluate the supragingival plaque removal efficacy of two power interdental devices combined with a manual toothbrush. METHODS Eighty-two (82) subjects completed the study. Subjects were randomly assigned to one of two groups: Waterpik Water Flosser (WF) plus manual tooth brushing o...

Methods: In this study, cleaning process was studied and analyzed with special reference to cleaning tools. A group of 13 professional cleaners participated in this study. While they performed their normal tasks, their oxygen consumption, heart rate, rating of perceived exertion and postural data were obtained. The perceived exertion during cleaning task using the ‘‘redesigned cleaning tool’’ w...

Standards of cleanliness in health care continue to attract attention. Effective cleaning requires the input of energy, and microfibre cloths may help in the physical removal of soil. The ability of these cloths to remove organic soil (measured by ATP) and bacteria was compared with paper towel and a conventional cloth in controlled wet and dry conditions. When used wet on a dry surface, the cl...

This paper considers the problem of using synchronous mobile agents to decontaminate the nodes of a graph given a spreading contamination. We begin by considering the problem of minimizing cleaning time, given initial agent and contamination locations. Then, we take as input a set of all possible locations in which a contamination can start, and examine problems in which we strategically pre-po...

Efficient removal of biofilms from medical devices is a big challenge in health care to avoid hospital-acquired infections, especially from delicate devices like flexible endoscopes, which cannot be reprocessed using harsh chemicals or high temperatures. Therefore, milder solutions such as enzymatic cleaners have to be used, which need to be carefully developed to ensure efficacious performance...

This paper discusses the influence that decisions about data cleaning and violations of statistical assumptions can have on drawing valid conclusions to research studies. The datasets provided in this paper were collected as part of a National Science Foundation grant to design online games and associated labs for use in undergraduate and graduate statistics courses that can effectively illustr...

BACKGROUND Carbapenem-resistant Acinetobacter baumannii (CRAB) is associated with nosocomial infections worldwide. Here, we used phage as a potential agent to evaluate the efficacy of daily cleaning practices combined with a bacteriophage-containing aerosol against CRAB. METHODS A two-phase prospective intervention study was performed at a 945-bed public teaching hospital. From March to Decem...

the objective of this study was to evaluate the presence of perchloroethylene (pce) and trichloroethylene (tce) in dry cleaning shops in tehran, iran. pce and tce are two most prevalent solvents in dry-leaning shops. air and effluent samples were collected in october to december 2011 from 10 dry-cleaning shops. analyses were performed by head-space gas chromatography technique. gas chromatograp...