Chapter 11: Tooth Selection

Question 1

Provides upper lip support:

Answer 1

Both tooth and denture base

Question 2

What portion of canine should be more prominent due to the labial placement of the tooth?

Answer 2

Cervical portion

Question 3

Bone type in maxillary anterior residual ridge:

Answer 3

mostly cancellous bone, absorbs quickly in response to force

Question 4

Placement of incisal edges of mandibular teeth

Answer 4

should not be placed forward of a plane perpendicular to the center of the labial vestibule, and under no circumstances should they be positioned over the anterior land area of the cast, leads to cantilever effect and instability

Question 5

When not to have vertical overlap of the anterior teeth:

Answer 5

nonbalanced type of occlusion

Question 6

What determines amount of incisal guidance?

Answer 6

Degree of hor and vertical overlap

Question 7

incisal guidance should not lead to:

Answer 7

posterior teeth discluding in excursive movements (don’t want Christensens phenomenon)

Question 8

no more than __d incisal guidance greater than the anterior-posterior angulation of the plane
of occlusion.

Answer 8

20

Question 9

Discluding in excursive movements:

Answer 9

Christensens phenomenon

Question 10

To minimize incisal guidance:

Answer 10

decrease vertical overlap, increase horizontal

Question 11

To minimize separation of posterior teeth in excursive moves:

Answer 11

decrease steepness of incisal guidance

Question 12

When should anterior teeth contact lightly?

Answer 12

protrusive or working moves, required for tearing off bits of food, incising

Question 13

“Kissing contact” should be achieved when

Answer 13

in protrusive movement (check on my dentures) - it seems theoretically easier to align the mandibular in this manner. Why don’t we?

Question 14

TF? The need for an overlap is often not obvious during the maxillomandibular records appointment

Answer 14

T

Question 15

How to set the condylar inclination of the articulator:

Answer 15

make protrusive or lateral interocclusal records to

Question 16

man denture teeth should not be placed beyond this point:

Answer 16

point at which the residual ridge

begins to slope up toward the retromolar pad.

Question 17

Mandibular posterior teeth to be eliminated if not enough room:

Answer 17

first premolar or second molar, remove first premolar for better mastication

Question 18

Non balanced occlusion mandibular posterior tooth placement:

Answer 18

flat occlusal plane, the long axes perpendicular to the plane of occlusion

Question 19

Balance occlusion posterior tooth arrangement:

Answer 19

arranged to a compensating curve, anterior-poste-
rior and medial-lateral curvature of the occlusal surfaces, to create the excursive contacts required
for a balanced occlusion

Question 20

Placement of first premolar in dentures:

Answer 20

B surface aligns with B surface of canine, CG should align with either the contact point between the canine and lateral incisor or tip of the canine

Question 21

Placement of man molars:

Answer 21

Directly over ridge, aids in stability

Question 22

Correct arrangement of man pre and molars:

Answer 22

CG’s centered over ridge and all CG’s align with each other

Question 23

To calculate original width of the patient’s central incisors:

Answer 23

photo interpupillary/ actual interpupillary = photo CI width/ actual CI width (X)

Question 24

Large maxillary ridges, at least __ mm, small ridges less than _mm.

Answer 24

53, 50

Question 25

occlusion rims must be correctly contoured to provide:

Answer 25

lip support, esthetic and phonetic demands.

Question 26

Points to mark at the wax tryin:

Answer 26

midline, high smile line, relaxed corners of mouth

Question 27

High smile line coincides with:

Answer 27

minimum incisogingival height of the maxillary anterior teeth

Question 28

relaxed corners of mouth coincides with:

Answer 28

canine to canine width (all anteriors)

Question 29

Anterior tooth width for patients with obvious contraction or distortion of the corners of the mouth

Answer 29

interalar width. centerline of canine w outer edge of alar

Question 30

add __ mm to the interalar measurement to produce the width of the six maxillary anterior teeth, from distal of canine to distal of canine

Answer 30

7

Question 31

TF? African-American patients usually require one size larger category mold thamn indicated by interalar width

Answer 31

F. smaller (wider noses, on average)

Question 32

Trubyte tooth indicator:

Answer 32

size, outline, and profile forms of maxillary anterior teeth

Question 33

Tooth width and length are based upon an average __ ratio of the bizygomatic width and height of the face in relation to the width and length dimensions of the maxillary central incisor

Answer 33

16:1

Question 34

Reference points for Trubyte Tooth indicator:

Answer 34

forehead, base of nose, point of chin

Question 35

Invoclar Vivadent Blueline Form Selector uses:

Answer 35

Interalar dimension with tooth mould width

Question 36

How does tooth shape change with age?

Answer 36

become less rounded, decreasing display of the maxillary anterior teeth and a greater display of the mandibular, curvature of smile line flattens

Question 37

Posterior tooth selection is based on:

Answer 37

size of anteriors

Question 38

mesiodistal length of the posterior teeth is governed by:

Answer 38

length of edentulous mandibular ridge

Question 39

What can get irritated if you place teeth on the slope to the retromolar pad?`

Answer 39

lingual aspect of the anterior ridge

Question 40

If no slope is present where should the mandibular measurement begin?

Answer 40

retromolar pad

Question 41

Do extracted teeth tend to lighten or darken in time?

Answer 41

lighten

Question 42

Why not to show pts the entire shade range for teeth:

Answer 42

focus on lightest shades

Question 43

How to reduce light intensity when matching tooth color:

Answer 43

squint, tab that disappears first is best match

Question 44

shade guide tooth should be observed in three locations:

Answer 44

1) outside the mouth and beside the cheek, 2) under the upper lip with incisal edge exposed and 3) under the upper lip with mouth open and two-thirds to three-fourths of tooth exposed

Question 45

How many shade options should you give the pt?

Answer 45

2 or 3

Question 46

Greatest error in tooth selection:

Answer 46

too light in shade or too small