Exam 2: Hand positions, Ergonomics, BioMec, Rubber Dams!

Question 1

When prepping the bur stays PARALLEL to the ________ of the tooth!

Answer 1

long axis

Question 2

Ergo: limit neck flextion to ___ degrees.

Answer 2

20 degrees

Question 3

Right handed dentists should work in the ___ o’clock position, but can range from ___ o’clock to ___ o’clock.

Answer 3

11 o’clock….9 o’clock-12 o’clock

Question 4

Where should the patient’s head be positioned relative to your body?

Answer 4

above belly button, below mid-thorax

Question 5

The patient’s maxillary face angle should be _____ to slightly ______.

Answer 5

vertical….forward

Question 6

If you word on the Right quadrants, the Pt’s head should turn ______.

Answer 6

left

Question 7

If you work on the left quadrants, the Pt’s head should turn ______.

Answer 7

right

Question 8

Keep your finger rest on a ______!!! AND NEVER on the _____ or the ______.

Answer 8

tooth!!!…lips or cheek

Question 9

Keep the finger rest in the _____ arch that you are working on.

Answer 9

SAME

Question 10

When working in the maxilla, the Pt’s head should be more _______ and use _______ vision.

Answer 10

horizontal…indirect

Question 11

When we did the lower right quad, we worked from the ___ o’clock position.

Answer 11

9

Question 12

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.

Answer 12

25…extended

Question 13

When working on the upper left quadrant from the 11 o clock position our finger rest was on the _____ surface of #__.

Answer 13

Incisal… #6

Question 14

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.

Answer 14

distal (in our case it was #2)…“choked up”

Question 15

What is the #1 priority for dental ergonomics?

Answer 15

MAINTAIN LORDOSIS!!!

Question 16

What are the two best wrist positions?

Answer 16

extension and neutral (not flexion or ulnar)

Question 17

Enamel: ___% inorganic, ___% water, ___% organic

Answer 17

96% inorganic, 3% water, 1% inorganic

Question 18

Dentin: ___% inorganic, ___% water, ___% organic

Answer 18

75% inorganic, 20% water, 5% organic

Question 19

Enamel rods exit ________ to tooth surface.

Answer 19

perpendicular

Question 20

Dentin is ___x softer then enamel. Has a _____ appearance, and is usually ____ in color.

Answer 20

5x…duller…darker

Question 21

When is Primary Dentin deposited?

Answer 21

during development

Question 22

Young permanent teeth have ____ pulp, and ____ pulp horns, and _____ apecies.

Answer 22

large, large, open

Question 23

What type of dentin is deposited as a process of normal aging?

Answer 23

Secondary Dentin

Question 24

What type of dentin is deposited in response to trauma?

Answer 24

Tertiary Dentin (Trauma=Tertiary)

Question 25

What is hyper-mineralized, Darker, Non-carious, not necessary to remove, more mineralized, harder, more difficult to bond to with composites DENTIN?

Answer 25

Sclerotic Dentin

Question 26

How far away from the pulp do you have to be drilling in order to affect it?

Answer 26

2mm

Question 27

Fluid in the dental tubule has an ______ flow, so the _______ pressure of blowing air on exposed dentin stretches and disrupts the nerves and odontoblasts.

Answer 27

outward....negative

Question 28

What are the 4 steps of the Pulpal Inflammation Cascade?

Answer 28

1. 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

Question 29

What are the 4 causes to pulpal inflammation?

Answer 29

1.Dessication (over dry dentin post etch!) 2.Heat 3.Osmotic Changes 4.Bacteria

Question 30

Dentinal Tubules are ______, less numerous, more occluded, at DEJ....Dentinal Tubules are ______, higher density, less occluded, ______ closer to PULP.

Answer 30

smaller....larger....WETTER

Question 31

Which type of bur can be sharpened with a stone?

Answer 31

DIAMOND!

Question 32

Concerning cleaning stones: Only use on diamond burs that are ______ or ______ grit....> 80 microns

Answer 32

medium or coarse....

Question 33

Which type of diamond bur do we NOT use a cleaning stone for?

Answer 33

fine (<30 microns)

Question 34

What causes less micro fracture of enamel...less or more fluted burs?

Answer 34

more fluted=less micro fracture

Question 35

When using a diamond bur, ______ are NECESSARY.

Answer 35

COOLANTS (h2o)

Question 36

Which procedure is a Rubber dam MANDATORY?

Answer 36

any ENDO procedure

Question 37

Where is the clamp of the rubber dam placed?

Answer 37

The tooth DISTAL to the working tooth

Question 38

What type of lubricant do you use with a latex rubber dam?

Answer 38

h2o soluble jelly

Question 39

What % of the population has a latex allergy?

Answer 39

12%

Question 40

Which part of the tooth does the bow of the clamp face?

Answer 40

distal

Question 41

Can you put a flat rubber dam clamp on a partially erupted tooth?

Answer 41

Nope, it will slip off. We'll have to numb and use a curved clamp

Question 42

On an upper molar rubber dam clamp, which surface does the LONGER part of the clamp attach to?

Answer 42

the FACIAL surface!

Question 43

Are their specific premolar clamps for maxillary and mandibular premolars?

Answer 43

Nope, all of their roots or oval shaped

Question 44

BOOM! WHAT HOLE SIZE DO I PUNCH FOR MY RUBBER DAM??? (5 sizes, 5 being the largest-1 is the smallest)

Answer 44

#5 (largest)= CLAMPED molar (((& premolar?!?!?)))...#4=molars....#3=Premolars & Canines....#2=Maxillary Incisiors.... #1 Mandibular Incisiors

Question 45

What is the more commonly used rubber dam technique, placing the clamp first or placing them as a unit?

Answer 45

UNIT!

Question 46

Where am I going to punch a hole in the rubber dam to orient myself?

Answer 46

Upper Right!

Question 47

While using the 1 unit rubber dam placement method, do I place the dam on the frame before or after clamping the tooth?

Answer 47

BEFORE! it all goes into pt's mouth ready to go!

Question 48

In ENDO, a rubber dam is freaking REQUIRED. Which tooth do I place the rubber dam on? Also, which frame do I use?

Answer 48

Placed on the working tooth (NOT the tooth distal like normal rubber dam placement!)...Use PLASTIC frame!