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
Dentin is ___x softer then enamel. Has a _____ appearance, and is usually ____ in color.
5x…duller…darker
When is Primary Dentin deposited?
during development
Young permanent teeth have ____ pulp, and ____ pulp horns, and _____ apecies.
large, large, open
What type of dentin is deposited as a process of normal aging?
Secondary Dentin
What type of dentin is deposited in response to trauma?
Tertiary Dentin (Trauma=Tertiary)
What is hyper-mineralized, Darker, Non-carious, not necessary to remove, more mineralized, harder, more difficult to bond to with composites DENTIN?
Sclerotic Dentin
How far away from the pulp do you have to be drilling in order to affect it?
2mm
Fluid in the dental tubule has an ______ flow, so the _______ pressure of blowing air on exposed dentin stretches and disrupts the nerves and odontoblasts.
outward….negative
What are the 4 steps of the Pulpal Inflammation Cascade?
- Inflammed pulp stimulates the vascular system 2.Neropeptides released activate vasodilation 3.Odontoblasts swell and close the dentinal tubule 4.Minor fluid changes distend odontoblast to create pain
What are the 4 causes to pulpal inflammation?
1.Dessication (over dry dentin post etch!) 2.Heat 3.Osmotic Changes 4.Bacteria
Dentinal Tubules are ______, less numerous, more occluded, at DEJ….Dentinal Tubules are ______, higher density, less occluded, ______ closer to PULP.
smaller….larger….WETTER
Which type of bur can be sharpened with a stone?
DIAMOND!
Concerning cleaning stones: Only use on diamond burs that are ______ or ______ grit….> 80 microns
medium or coarse….
Which type of diamond bur do we NOT use a cleaning stone for?
fine (<30 microns)
What causes less micro fracture of enamel…less or more fluted burs?
more fluted=less micro fracture
When using a diamond bur, ______ are NECESSARY.
COOLANTS (h2o)
Which procedure is a Rubber dam MANDATORY?
any ENDO procedure
Where is the clamp of the rubber dam placed?
The tooth DISTAL to the working tooth
What type of lubricant do you use with a latex rubber dam?
h2o soluble jelly
What % of the population has a latex allergy?
12%
Which part of the tooth does the bow of the clamp face?
distal
Can you put a flat rubber dam clamp on a partially erupted tooth?
Nope, it will slip off. We’ll have to numb and use a curved clamp
On an upper molar rubber dam clamp, which surface does the LONGER part of the clamp attach to?
the FACIAL surface!
Are their specific premolar clamps for maxillary and mandibular premolars?
Nope, all of their roots or oval shaped
BOOM! WHAT HOLE SIZE DO I PUNCH FOR MY RUBBER DAM??? (5 sizes, 5 being the largest-1 is the smallest)
5 (largest)= CLAMPED molar (((& premolar?!?!?)))…#4=molars….#3=Premolars & Canines….#2=Maxillary Incisiors…. #1 Mandibular Incisiors
What is the more commonly used rubber dam technique, placing the clamp first or placing them as a unit?
UNIT!
Where am I going to punch a hole in the rubber dam to orient myself?
Upper Right!
While using the 1 unit rubber dam placement method, do I place the dam on the frame before or after clamping the tooth?
BEFORE! it all goes into pt’s mouth ready to go!
In ENDO, a rubber dam is freaking REQUIRED. Which tooth do I place the rubber dam on? Also, which frame do I use?
Placed on the working tooth (NOT the tooth distal like normal rubber dam placement!)…Use PLASTIC frame!
