Anterior Tooth Selection

Question 1

Part of crown that goes below the gingiva on facial surface:

Answer 1

collar

Question 2

base/rim of the crown (curvature form buccal to lingual edge of crown?):

Answer 2

ridge lap

Question 3

Denture teeth are made of:

Answer 3

acrylic resin, porcelain, metal

Question 4

How is the acrylic resin bonded to the denture base?

Answer 4

chemical bond

Question 5

What minimizes wear in acrylic resin teeth?

Answer 5

double cross-linking of polymer chains

Question 6

Negative aspect of acrylic resin denture teeth:

Answer 6

may stain over time

Question 7

Easiest type of denture tooth to set:

Answer 7

acrylic resin

Question 8

How are porcelain denture teeth bonded to base?

Answer 8

mechanically

Question 9

Negative aspect of porcelain denture teeth;

Answer 9

wears opposing natural teeth, easily chipped/ fractured, prone to discoloration at interface with denture base (gingival margin)

Question 10

What type of denture tooth has pins on the lingual surface of the anterior teeth?

Answer 10

procelain

Question 11

These are found on the posterior portion of porcelain teeth:

Answer 11

diatoric channels

Question 12

Functional benefit of metal teeth:

Answer 12

mechanical insert to increase chewing efficiency, stabilize VDO

Question 13

tooth selection guides;

Answer 13

mold guides

Question 14

class/ type I denture tooth:

Answer 14

square, M/D sides straight and parallel for 1/2 + of the crown

Question 15

calss/ type II denture tooth:

Answer 15

tapering, M/D surfaces converge toward the occlusal surface

Question 16

class/type III denture tooth:

Answer 16

ovoid, M: convex, D: compound curve, I: convex to concave as it passes toward the cervix

Question 17

7 tooth forms:

Answer 17

square, square tapering, tapering, ovoid, tapering ovoid, square ovoid, square tapering ovoid

Question 18

Theory presented by Frush nd Fischer:

Answer 18

dentogenic theory, square: old vigorous men, round: young delicate females

Question 19

How to choose tooth shape:

Answer 19

pre-extraction casts, photos, current prosthesis

Question 20

Anatomical indicators of tooth position:

Answer 20

Extraoral: alar width, commisures, lip length, Intraoral: extraction sockets, canine eminence

Question 21

The junction of the commisure of the iips aligns with:

Answer 21

the distal surface of the canines

Question 22

What is the width of the 6 anterior teeth about as wide as?

Answer 22

the alar width

Question 23

Info that mold guides provide:

Answer 23

width of ant teeth on a curved or straight line, length of the CI

Question 24

What is measured with a form selector?

Answer 24

Inner canthus and inter ala

Question 25

Would you need a smaller or larger mold with Class II dental relationship?

Answer 25

smaller

Question 26

What is chroma?

Answer 26

saturation of the color

Question 27

Valuw:

Answer 27

brillaince, lightness or darkness, dilution with white or black

Question 28

What is the most important aspect of shade selection

Answer 28

Value

Question 29

Why do older people tend to have darker teeth?

Answer 29

enamel loss and staining

Question 30

Why shouldn’t the anterior teeth be placed directly over the ridge?

Answer 30

resorption

Question 31

Where should the labial surface of the CI be aligned?

Answer 31

8-10mm anterior tot he incisive papilla

Question 32

Tilt:

Answer 32

The labio-lingual orientation of the long axis of the tooth

Question 33

Inclination:

Answer 33

The M-D orientation of the long axis of the tooth

Question 34

Tilt and inclination for the CI:

Answer 34

Little or no tilt, slight distal inclination

Question 35

Tilt and inclination for the LI:

Answer 35

Moderate tile, moderate distal inclination

Question 36

Tilt and inclination for the canines:

Answer 36

No tit, moderate to strong distal inclination

Question 37

In which direction d the incisal embrasures become larger?

Answer 37

toward the distal (teeth should appear to be individual)

Question 38

What are you hoping to achieve in protrusive excursion?

Answer 38

passive contact

Question 39

How much horizontal overlap is there in Class I oclusion?

Answer 39

1-2mm

Question 40

How much horizontal overlap is there in Class II oclusion?

Answer 40

2-12mm

Question 41

How much horizontal overlap is there in Class III oclusion?

Answer 41

None

Question 42

What to evaluate in the placement of the anterior teeth?

Answer 42

midline, length, width, incisal plane, lip support, phonetics, smile line, patient satisfaction

Question 43

Anatomical guides for pts midline

Answer 43

incisive papilla, nose, philtrum, facial midline (not labial frenal attachmetn)

Question 44

To where does the incisal edge extend?

Answer 44

often 1-2mm beyond the lip (highly variable)

Question 45

The incisal plane should be:

Answer 45

parallel to the interpupillary line

Question 46

From where should lip support come?

Answer 46

from the teeth, not the flange

Question 47

Lips should appear:

Answer 47

everted (turned inside)

Question 48

What is phonetic evaluation used for?

Answer 48

Vertical and horizontal overlap, VDO

Question 49

What to look for when asking pt to make fricative sounds:

Answer 49

Max anteriors to contact the wet-dry line on lower lip

Question 50

What to look for when asking pt to make sibilant sounds:

Answer 50

Anterior teeth should come close but not touch

Question 51

How to evaluate the occlusal plane:

Answer 51

occlusal plane rises as it progresses posteriorily

Question 52

Who has a more curved smile line, older males or younger females?

Answer 52

older males

Question 53

A significant level of individuality can come from:

Answer 53

the mandibular anterior arrangement

Question 54

How to change the esthetics from soft to bold and add character:

Answer 54

Grinding the incisal edge