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If a patient tries to look at the technician during a panoramic radiograph, what will the image look like?  Teeth large on one side of the image and small on the other side What is used to take a panoramic radiograph?  Film cassette The computer used for digital imaging  can be used for other office functions which way do x-rays travel?  straight line A radiograph that is too light is most likely an example of what?  Underexposed A film that is too light is the result ...

what are the 6 chains of infection  1. Modes of transmission 2. Portal of Entry 3. Susceptible host 4.Infectious Agent 5.Reservoir 6. Portal of Exit What are the 8 modes of transmission?  1. Direct 2. Indirect 3. Airborne 4. Aerosol, spray, or spatter 5. Parenteral 6. Blood-Borne 7. Food and Water 8. Fecal-oral Direct Transmission 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel! 1 | P a g e | G r a d e A + | 2 0 24 / 2 0 2 5  transmi...

Which is a safe practice in recapping of a needle?  one-handed scoop method A dental assistant has completed the series of injections for hepatitis B vaccination. The next step is to...  get a blood test for hbv antibodies. If patients indicate on their health history that they have active tuberculosis, this means that...  They should not have elective treatment performed in the dental office. How long should a surgical hand scrub take the dental assistant to perform?  2-6 m...

Palatine tonsils (tonsils)  tonsils Found at the side of the throat opposite the back of the tongue Tonsillar pillars  The vertical folds of tissue that lie in front of and behind the palatine tonsils in the lateral throat wall Vestibule  Space between the lips or cheeks and the teeth oral cavity proper  The area of the oral cavity bounded anteriorly and laterally by the teeth and posteriorly by the palatine tonsils Vermilion Zone  Red part of the lip where the lip mu...

Ultrasonic Waves that travel along the surface of a material and whose particle motion is elliptical.  Rayleigh Waves (Surface/Love Waves) In a material with a given velocity, when frequency is increased, the wavelength will __?  Decrease Ultrasonic vibrations can be propagated only in the longitudinal mode in which media?  Machine Oil (Liquid) If a 5.0 Mhz transducer is substituted for a 2.25 Mhz transducer ( 2.25 old/5.0 new), what would be the effect on the wavelength of th...

the velocity of longitudinal wave is determined by the  material properties the material in a search unit which controls the search unit ringing is called  the damping material which of the following search units would contain the thinnest crystal  the crystal vibrating at the highest frequency piezoelectric crystals convert  electrical energy to mechanical energy or mechanical energy to electrical the number of complete waves which pass a given point in a given time period...

What are two advantages of non-destructive testing  The material tested are not damaged or Destroyed and Most of the equipment available is very portable What is liquid Penetrant testing?  is an NDT method used for location surface discontinuities in a non-porous object What principle enables PT to work?  Capillary force or action, this force causes the liquid to creep and crawl into fine openings All penetrants are?  Oil-Based, oils are used due to their low surface tensi...

ow viscosity liquid with low surface tension  Capillary action When current passes through the part;The orientation of the magnetic flux is circular  Circular Using a coil;Flux lines rotate around the longitudinal axis  Longitudinal part subjected to magnetizing force when testing medium is applied  continuous magnetizing force is removed before testing medium is applied  residual deep penetration  direct current shallow penetration  alternating current Uniform...

A correctly made butt weld will have what bead width _________to __________times the thickness of the _______ metal  3, 5, base What NDT method is used to detect surface or near-surface defects in most non-ferrous metals  eddy current What nondestructive testing method is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?  ultrasonic A _____ is an optional device that allows us to see inside an engine without disassembling it...

When performing a surface inspection on a piece of aluminum for possible cracks, what are the possible NDT methods that should be used to confirm your findings?  Visual and Penetrant Once the surface of the part has been cleaned properly, penetrant can be applied by:  All of the above The most important step in any penetrant type inspection is:  Part preparation and cleaning The most important consideration before performing any NDT test for a commercial airline is:  All of ...