| A | B |
|---|
| when should dental waterlines be flushed | every morning, 20-30 seconds after each patient |
| biofilm | slime producing bacterial communites that may also harbor fungai, algse and protoza |
| legionella | bacterium responsible for legionellosis |
| anti-retraction "suck back" | entry of fluids and microorganisms into waterlines as a result of negative water pressure |
| planktonic bacteria | bacteria floating in water |
| where is biofilm found | suction tips, hand piece waterlines |
| biofilm in dental waterlines can never be completely eliminated even with flushing of waterlines (T/F) | TRUE |
| How often should microfilters in waterline be changed | according to manufacturers directions |
| whom should you contact when selecting a chemical for the dental unit | equipment manufacturer |
| what type of water must be used as an irrigant for sugery involving bone | sterile water ONLY |
| what type of PPE is especially critical when aerosal is being generated | eyewear and mask (due to aerosolization) |
| german physicist discovered x-rays | roentgen |
| G.V. Black | gran old man of dentistry |
| Class 1 | occlusal areas or buccal and lingual pits (molars/premolars) |
| Class II | posterior teeth interproximal (molars/premolars) |
| Class III | anterior teeth interproximal (incisors/canines) |
| Class IV | anterior interproximal including incisal corner (incisors/canines) |
| Class V | gingival at facial or ligual (any tooth) |
| Class VI | cusp tip |
| In community water, the number of waterborne bacteria is kept below how many colony-forming units (CFUs) per milliliter? | 500 CFUs |
| The types of bacteria that are found in dental unit water are frequently the same types as those found in community water, but the levels of bacteria found in the dental units are almost always | higher |
| The primary source of microorganisms in dental waterlines is what? | public water supply |
| There are two communities of bacteria in dental unit waterlines: | planktonic (free-floating) and biofilm (viruses DO NOT reproduce in lines) |
| Biofilm exists in | all places where moisture and a suitable solid surface exist |
| check with the manufacturer of the dental equipment | to determine which chemical product and maintenance protocol they recommend |
