Exam 2: Hand positions, Ergonomics, BioMec, Rubber Dams! Flashcards
When prepping the bur stays PARALLEL to the ________ of the tooth!
long axis
Ergo: limit neck flextion to ___ degrees.
20 degrees
Right handed dentists should work in the ___ o’clock position, but can range from ___ o’clock to ___ o’clock.
11 o’clock….9 o’clock-12 o’clock
Where should the patient’s head be positioned relative to your body?
above belly button, below mid-thorax
The patient’s maxillary face angle should be _____ to slightly ______.
vertical….forward
If you word on the Right quadrants, the Pt’s head should turn ______.
left
If you work on the left quadrants, the Pt’s head should turn ______.
right
Keep your finger rest on a ______!!! AND NEVER on the _____ or the ______.
tooth!!!…lips or cheek
Keep the finger rest in the _____ arch that you are working on.
SAME
When working in the maxilla, the Pt’s head should be more _______ and use _______ vision.
horizontal…indirect
When we did the lower right quad, we worked from the ___ o’clock position.
9
When working on the Lower Left Quad from the 11 o’clock position, we had our finger rest on #___, and we ______ our grip of the hand piece.
25…extended
When working on the upper left quadrant from the 11 o clock position our finger rest was on the _____ surface of #__.
Incisal… #6
When working on the upper right quadrant from the 11 o’clock position, our finger rest was on the facial surface of the tooth _____ to the working tooth and we “______” on the hand piece.
distal (in our case it was #2)…“choked up”
What is the #1 priority for dental ergonomics?
MAINTAIN LORDOSIS!!!
What are the two best wrist positions?
extension and neutral (not flexion or ulnar)
Enamel: ___% inorganic, ___% water, ___% organic
96% inorganic, 3% water, 1% inorganic
Dentin: ___% inorganic, ___% water, ___% organic
75% inorganic, 20% water, 5% organic
Enamel rods exit ________ to tooth surface.
perpendicular
