margins of the cast where the finished tray will be seated are outlined in pencil
outlining the tray 2-3mm beyond last tooth
mucogingival junction
Creates room for impression material
spacer
paper towel or baseplate wax
What is placed to prevent a tray from seating too deeply onto the arch or quadrant?
spacer stops triangle or round holes
4 minimum for edentulous
crowns are filled with cement
With regard to tissues most sensitive to skin, oral mucosa, thyroid gland, nerve
radiation, which of the following is the
correct order from most sensitive to least
sensitive tissue?
eyes
bone marrow
salivary gland
Critical organ
thyroid gland
skin
gonrads
1/9
, high- small lymphocyte
- bone marrow
- reproductive cells
fairly high- skins
- lens of eye
- oral mucosa
medium- connective tissue
- small blood vessels
radiation sensitivity
- developing bone and cartilage
fairly low- mature bone and cartilage
-salivary gland
- thyroid gland
- kidney
- liver
low- muscle tissue
- nerve tissue
Even though the dental laboratory disinfect every item that is sent to the laboratory
disinfects impressions and appliances that
are received from the dental office, the
responsibility of the dental office is to:
When does a laboratory coat or protective if it becomes visibly soiled with blood
gown need to be changed?
When a dental assistant is cleaning safety glasses, examination gloves, and protective gown
instruments, what type(s) of personal
protective equipment should be worn?
Which type of film is used in panoramic screen
imaging?
A removable denture prosthesis can be with routine prophylaxis instruments and brushes in the patient's mouth
cleaned in the dental office by all of the
methods listed except
SDS 16 sections
The dental assistant will mix the glass base, secondary
inomer to a ________ or _________ consistency for
a core build-up.
You have a new dental x-ray machine. The The resultant beam will be four times as intense. You will need to decrease the
length of the PID is changing from 16 to 8 exposure time
inches. How does this affect the intensity of
the x-ray beam? What adjustment will you
need to make to keep the density of your
images consistent?
How should instruments with hinges (e.g., Hinged instruments should be positioned with the hinges open.
scissors, forceps, pliers) be positioned in
the sterilizer?
Hand lotions with petroleum- or oil-based weaken the glove material, especially latex
ingredients should not be used in a dental
office because these products can:
Which of the following is not a protocol for relying on the patient's health history as an indication of risk
standard precautions?
2/9
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