Selecting and Arranging Artificial Teeth

Question 1

Before Selecting the Teeth, discuss (2)

Answer 1

Discuss briefly the patient’s goals and
motivation for treatment
Discuss the functions of the anterior and
posterior artificial teeth

Question 2

Discuss briefly the patient’s goals and

motivation for treatment (2)

Answer 2

n Esthetics

n Function

Question 3

Discuss the functions of the anterior and

posterior artificial teeth (2)

Answer 3

n Anterior teeth – esthetics

n Posterior teeth – function

Question 4

Use any and all information that is

available, such as (3)

Answer 4

n Previous dentures
n Photographs
n Friends and Family

Question 5

Discuss likes and dislikes (3)

Answer 5

n Color
n Shape
n Function

Question 6

Factors to Consider with Anterior 
Tooth Selection (3)

Answer 6

n Shade
n Size
n Mold

Question 7

n Shade –

Answer 7

easiest to determine

Question 8

n Size –

Answer 8

occlusal-gingival height and mesial-

distal width

Question 9

n Mold –

Answer 9

shape of the individual teeth

Question 10

Shade Selection (3)

Answer 10

n Patients always want “the whitest and
brightest”
n Narrow selection down to a couple of possible
shades
n Offer input, but let patient make the ultimate
decision

Question 11

– different shades

Answer 11

24

Question 12

Determining the Size of the Anterior

Teeth (4)

Answer 12

n Use existing denture
n Use anatomical landmarks
n Use the Interalar Facial Meter
n Use the Trubyte Tooth Indicator

Question 13

Using the Existing Denture:

Answer 13

Simply measure the height and width of the
central incisor of the denture with a Boley
gauge.

Question 14

The width of the central incisor
is approximately — the
bizygomatic width.

Answer 14

1/16

Question 15

Bizygomatic width can be

measured using a

Answer 15

caliper-type facebow

Question 16

The approximate combined width of the 6
anterior teeth on a flat plane is the
bizygomatic width divided by

Answer 16

3.3

Question 17

Determining the Width of the Anterior

Sextant with Anatomical Landmarks (3)

Answer 17

n Mark the corners of the wax rim
n Measure that distance using the curve of the
wax rim
n That distance will approximate the combined
width of the 6 anterior teeth on a curve.

Question 18

Determining the Anterior Sextant

Width using the Interalar Facial Meter (2)

Answer 18

n Use the Facial Meter to measure the interalar
distance
n Classifies anterior sextant width into small,
medium and large

Question 19

5 Ways to determine width of anterior

teeth

Answer 19

n Measure the width of the central incisor on existing
denture
n 1/16 the bizygomatic width equals the width of the
central incisor
n Bizygomatic width divided by 3.3 equals the
combined width of the 6 anteriors on a flat plane
n Corners of the mouth marked on the wax rim
equals the combined width of 6 anteriors on a
curved plane
n Use the Interalar Facial Meter

Question 20

Determining the Length of Anterior

Teeth (4)

Answer 20

n Use an existing denture 
n Use the patient’s lip line 
n Using anatomical landmarks 
n Evaluate the distance between the maxillary 
and mandibular ridges

Question 21

Mark the “lip line” on the maxillary wax rim when
the patient smiles to estimate the length of
the maxillary teeth and avoid a

Answer 21

“Gummy

Smile”.

Question 22

The distance from the hairline to the gnathion
(the most inferior bony portion of the chin)
divided by 16 equals the length of the

Answer 22

central

incisor.

Question 23

Longer teeth are considered to be more

esthetic, however,

Answer 23

the distance between the
maxillary and mandibular ridges may result in
the use of shorter teeth.

Question 24

4 ways to determine the length of the

anterior teeth

Answer 24

n Measure the length of the central incisor on the existing
denture
n Evaluate the “Smile line”
n 1/16 of the distance from the hairline to the gnathion equals
the length of the central incisor
n Measure the distance between the maxillary and mandibular
ridges

Question 25

Using the Indicator (2)

Answer 25

n Based on bizygomatic width for central incisor width n Based on hairline and gnathion line for length of central incisor

Question 26

Anterior Tooth Mold Selection | n 2 Ideologies:

Answer 26

n Dentogenics – Frush and Fisher n Based on age, sex, and personality n Geometric Theory –Williams, House and Loop n Based on the shape of the face

Question 27

Dentogenics | n Based on: (3)

Answer 27

n Sex n Age n Personality

Question 28

The maxillary central incisor resembles the

Answer 28

inverted face form

Question 29

Separated into 4 categories

Answer 29

n Square n Square tapering n Tapering n Ovoid

Question 30

Geometric Theory | n Based on the

Answer 30

shape of the face

Question 31

3 points are connected on each side of the | face

Answer 31

n Temple n Zygomatic arch n Angle of the mandible

Question 32

The facial contour of the anterior teeth should | mimic the contour of the face in

Answer 32

profile | n Curved vs. Flat

Question 33

Validity of the Geometric Theory | Disproven – Wright (1939), Bell (1978)

Answer 33

Although scientifically disproven, nature’s most pleasing objects are those that are in harmony with their surroundings. By harmonizing the teeth with the face, the denture is not only esthetically pleasing but also avoids drawing attention to them.

Question 34

The objective of both the Geometric Theory and Dentogenics is to

Answer 34

``` harmonize the teeth with their surrounding structures in an attempt to avoid detection and provide an esthetic appearance. ```

Question 35

The Bioform Mould Classification | System (2)

Answer 35

n After the size and shape of the teeth are determined, the information must be applied to the Bioform Mould Guide. n The maxillary anterior tooth guide consists of 2 numbers followed by a letter classification.

Question 36

The First Number (7)

Answer 36

classification 1. square 2. square tapering 3. ovoid 4. tapering 5. tapering ovoid 6. ovoid 7. square tapering ovoid

Question 37

The Second Number

Answer 37

proportion and contour proportion of the tooth 1. long 2. medium 3. short 4. long 5. medium 6. short facial contour 1. straight 2. straight 3. straight 4. curved 5. curved 6. curved

Question 38

The Letter

Answer 38

width of upper six anterior teeth on curve ``` B. less than 44 mm c. 44-45.5 d. 45.5-48 e. 48-49 f/x. 49-51.5 g. 51.5-54 h. 54-56 j. 56 or greater ```

Question 39

The shade, size and mould calculations are used to select the corresponding maxillary anterior teeth in the

Answer 39

mould guide.

Question 40

Use the Portrait Mould guide to select the | corresponding

Answer 40

mandibular anterior teeth |  May have a choice between multiple moulds

Question 41

The size of the maxillary and mandibular posterior teeth can also be determined using the --- ---. These measurements are also based on the

Answer 41

mould guide | maxillary anterior teeth

Question 42

Measure the distance from the distal of the canine to the ascending portion of the ridge to determine the combined length of the

Answer 42

mandibular posteriors

Question 43

Denture Tooth Materials (2)

Answer 43

porcelain | acrylic resin

Question 44

Porcelain: pros/cons

Answer 44

n Pros – esthetics | n Cons – clacking sound, abrasive, weight

Question 45

Acrylic resin: pros/cons

Answer 45

n Pros – easily adjusted, chemical bond to resin | n Cons – occlusal wear

Question 46

The goal of the final prosthesis is to

Answer 46

defy detection. Therefore the teeth should appear to “grow out of the alveolar bone”

Question 47

In the horizontal view (2)

Answer 47

n The incisal edges of the maxillary central incisors should be approximately 8-10 mm anterior to the midpoint of the incisive papilla.  A line drawn perpendicular to the mid-sagittal suture and that bisects the incisive papilla should extend though the center of the maxillary canines.

Question 48

The record base should not be --- under | the nostrils.

Answer 48

bulky

Question 49

In occlusion with the lips together, the labial incisal 1/3 of the maxillary anterior teeth support the

Answer 49

superior border of the lower lip

Question 50

The Frontal View n At rest, approximately --- of the maxillary centrals should be visible

Answer 50

1-2 mm

Question 51

The plane of the maxillary anterior teeth | should be parallel to the

Answer 51

interpupillary line.

Question 52

When smiling, the incisal edges of the | maxillary teeth should follow the line of the

Answer 52

lower lip

Question 53

The mandibular anterior teeth should be set on a curve that parallels the maxillary anterior teeth resulting in a uniform

Answer 53

1-2mm horizontal | overlap.

Question 54

There should be --- of | vertical overlap.

Answer 54

zero or minimal (0.5 mm)

Question 55

The canines should be positioned in a way in | which the

Answer 55

distal portion of the canine points to the desired position of the central fossae of the posterior teeth.

Question 56

The buccal corridor is defined as the

Answer 56

space between the buccal surfaces of the upper teeth and the corners of the mouth when the patient smiles. (Zarb, 1997)

Question 57

Setting Posterior Teeth (2)

Answer 57

n Measure the distance from the distal of the canine to the upward slope of the residual ridge. n A posterior tooth may be omitted due to a lack of space.

Question 58

The mandibular teeth should be on a flat plane | and extend

Answer 58

1/2 to 2/3 up the retromolar pad.

Question 59

The mandibular posterior teeth are set over the | ridge to gain a -- advantage.

Answer 59

retentive

Question 60

The maxillary posterior teeth are set to occlude | with the

Answer 60

mandibular posterior teeth.

Question 61

The occlusal-gingival height should be | maintained from the

Answer 61

anterior teeth to the | posterior teeth