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Complete Removable Prosthodontics > Selecting and Arranging Artificial Teeth > Flashcards

Selecting and Arranging Artificial Teeth Flashcards

1
Q

Before Selecting the Teeth, discuss (2)

A

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

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2
Q

Discuss briefly the patient’s goals and

motivation for treatment (2)

A

n Esthetics

n Function

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3
Q

Discuss the functions of the anterior and

posterior artificial teeth (2)

A

n Anterior teeth – esthetics

n Posterior teeth – function

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4
Q

Use any and all information that is

available, such as (3)

A

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

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5
Q

Discuss likes and dislikes (3)

A

n Color
n Shape
n Function

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6
Q 
Factors to Consider with Anterior 
Tooth Selection (3)
A

n Shade
n Size
n Mold

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7
Q

n Shade –

A

easiest to determine

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8
Q

n Size –

A

occlusal-gingival height and mesial-

distal width

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9
Q

n Mold –

A

shape of the individual teeth

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10
Q

Shade Selection (3)

A

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

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11
Q

– different shades

A

24

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12
Q

Determining the Size of the Anterior

Teeth (4)

A

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

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13
Q

Using the Existing Denture:

A

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

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14
Q

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

A

1/16

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15
Q

Bizygomatic width can be

measured using a

A

caliper-type facebow

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16
Q

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

A

3.3

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17
Q

Determining the Width of the Anterior

Sextant with Anatomical Landmarks (3)

A

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.

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18
Q

Determining the Anterior Sextant

Width using the Interalar Facial Meter (2)

A

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

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19
Q

5 Ways to determine width of anterior

teeth

A

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

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20
Q

Determining the Length of Anterior

Teeth (4)

A 
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
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21
Q

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

A

“Gummy

Smile”.

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22
Q

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

A

central

incisor.

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23
Q

Longer teeth are considered to be more

esthetic, however,

A

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

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24
Q

4 ways to determine the length of the

anterior teeth

A

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

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25
Q

Using the Indicator (2)

A

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

26
Q

Anterior Tooth Mold Selection

n 2 Ideologies:

A

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

27
Q

Dentogenics

n Based on: (3)

A

n Sex
n Age
n Personality

28
Q

The maxillary central incisor resembles the

A

inverted face form

29
Q

Separated into 4 categories

A

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

30
Q

Geometric Theory

n Based on the

A

shape of the face

31
Q

3 points are connected on each side of the

face

A

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

32
Q

The facial contour of the anterior teeth should

mimic the contour of the face in

A

profile

n Curved vs. Flat

33
Q

Validity of the Geometric Theory

Disproven – Wright (1939), Bell (1978)

A

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.

34
Q

The objective of both the
Geometric Theory and
Dentogenics is to

A 
harmonize the 
teeth with their surrounding 
structures in an attempt to  avoid 
detection and provide an esthetic 
appearance.
35
Q

The Bioform Mould Classification

System (2)

A

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.

36
Q

The First Number (7)

A

classification

  1. square
  2. square tapering
  3. ovoid
  4. tapering
  5. tapering ovoid
  6. ovoid
  7. square tapering ovoid
37
Q

The Second Number

A

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
38
Q

The Letter

A

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
39
Q

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

A

mould guide.

40
Q

Use the Portrait Mould guide to select the

corresponding

A

mandibular anterior teeth

 May have a choice between multiple moulds

41
Q

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

A

mould guide

maxillary anterior teeth

42
Q

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

A

mandibular posteriors

43
Q

Denture Tooth Materials (2)

A

porcelain

acrylic resin

44
Q

Porcelain: pros/cons

A

n Pros – esthetics

n Cons – clacking sound, abrasive, weight

45
Q

Acrylic resin: pros/cons

A

n Pros – easily adjusted, chemical bond to resin

n Cons – occlusal wear

46
Q

The goal of the final prosthesis is to

A

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

47
Q

In the horizontal view (2)

A

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.

48
Q

The record base should not be — under

the nostrils.

A

bulky

49
Q

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

A

superior border of the lower lip

50
Q

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

A

1-2 mm

51
Q

The plane of the maxillary anterior teeth

should be parallel to the

A

interpupillary line.

52
Q

When smiling, the incisal edges of the

maxillary teeth should follow the line of the

A

lower lip

53
Q

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

A

1-2mm horizontal

overlap.

54
Q

There should be — of

vertical overlap.

A

zero or minimal (0.5 mm)

55
Q

The canines should be positioned in a way in

which the

A

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

56
Q

The buccal corridor is defined as the

A

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

57
Q

Setting Posterior Teeth (2)

A

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.

58
Q

The mandibular teeth should be on a flat plane

and extend

A

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

59
Q

The mandibular posterior teeth are set over the

ridge to gain a – advantage.

A

retentive

60
Q

The maxillary posterior teeth are set to occlude

with the

A

mandibular posterior teeth.

61
Q

The occlusal-gingival height should be

maintained from the

A

anterior teeth to the

posterior teeth

Complete Removable Prosthodontics (20 decks)

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