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_Complete Removable Pros > 2/5: Selecting Denture Teeth > Flashcards

2/5: Selecting Denture Teeth Flashcards

1
Q

What is the point of anterior teeth?

A

Esthetics

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2
Q

What is the point of posterior teeth?

A

Function

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3
Q

What is valuable information to reach a happy medium when selecting teeth?

A

Previous dentures
- discuss likes and dislikes (color, shape, function)
- make impression of the dentures
Photographs
- make sure the teeth are showing
- most recent photograph
- photocopy of the photograph
Friends and family

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4
Q

What are factors to consider with anterior tooth selection?

A

Shade - easiest to determine
- patients always want the “whitest and brightest”
- narrow selection down to few shades
- offer input, but let patient make ultimate decision
Size - occlusal-gingival height and mesial-distal width
Mold - shape of the individual teeth

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5
Q

How should you determine the size of anterior teeth?

A

Use existing denture
- measure the height and width of the central incisor of the denture with a boley guage
Use anatomical landmarks
Use the Interalar Facial Meter
Use the Trubyte Tooth Indicator

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6
Q

How should you determine the width of the central incisor with anatomical landmarks?

A

The width of the central incisor is approx 1/16 the bizygomatic width (house and loop)
(bizygomatic width can be measured using a caliper-type facebow)

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7
Q

What is the width of the anterior sextant?

A

The approximate combined width of the 6 anterior teeth on a flat plane is the
bizygomatic width divided by 3.3

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8
Q

How should you determine the width of the anterior sextant with anatomical landmarks?

A
  • mark corners of the wax rim
  • measure the distance using the curve of the wax rim
  • that distance will approximate the combined width of the 6 anterior teeth ON A CURVE
  • Use the facial meter to measure the interalar distance
  • classifies anterior sextant width into small, medium, large
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9
Q

What are the 5 ways to determine width of anterior teeth?

A
  • Measure the width of the central incisor on existing
    denture
  • 1/16 the bizygomatic width equals the width of the
    central incisor
  • Bizygomatic width divided by 3.3 equals the
    combined width of the 6 anteriors on a flat plane
  • Corners of the mouth marked on the wax rim
    equals the combined width of 6 anteriors on a
    curved plane
  • Use the Interalar Facial Meter
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10
Q

How should you determine the length of anterior teeth?

A
  • Use an existing denture
  • Use the patient’s lip line
  • Using anatomical landmarks
  • Evaluate the distance between the maxillary
    and mandibular ridges
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11
Q

Why should you mark the “lip line” on the maxillary wax when a pt smiles?

A

To estimate the length of the max teeth and avoid a “gummy smile”

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12
Q

What equation can be done by utilizing the hairline to determine the length of the central incisor?

A

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

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13
Q

What are 4 ways to determine the length of the anterior teeth?

A
  • Measure the length of the central incisor on the existing
    denture
  • Evaluate the “Smile line”
  • 1/16 of the distance from the hairline to the gnathion equals
    the length of the central incisor
  • Measure the distance between the maxillary and mandibular
    ridges
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14
Q

What is the trubyte tooth indicator based on?

A
  • Based on bizygomatic width for central incisor
    width
  • Based on hairline and gnathion line for length
    of central incisor
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15
Q

What are the two ideologies of anterior tooth mold selection?

A
  1. Dentogenics
  2. Geometric theory
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16
Q

What are dentogenics?

A

Frush and fisher
- based on age, sex, and personality

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17
Q

What is the geometric theory?

A

Williams, House and Loop
- based on the shape of the face
- the max central incisor resembles the inverted face form

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18
Q

What are the 4 categories of the geometric theory?

A
  • square
  • square tapering
  • tapering
  • ovoid
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19
Q

What are the 3 points of the face that connect in the geometric theory?

A

Temple
Zygomatic arch
Angle of the mandible

20
Q

What should the facial contour of the anterior teeth mimic?

A

The contour of the face in profile
Curved vs flat

21
Q

What is the objective of the geometric theory and dentogenics?

A

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

22
Q

After the size and shape of the teeth are determined, the information must be applied to?

A

Bioform Mould Guide
- max anterior tooth guide consists of 2 numbers followed by a letter classification

23
Q

What is the first number of a tooth tray?

A

Classification

24
Q

What is the second number of a tooth tray?

A

Proportion and contour

25
Q

What is the letter on a tooth tray?

A

Width of upper six anterior teeth on a curve

26
Q

What should you use to select corresponding mandibular anterior teeth?

A

Portrait mould guide
- may have choice between multiple

27
Q

What should you measure to select the posterior mandibular teeth?

A

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

28
Q

What are the two types of denture tooth materials?

A

Porcelain
Acrylic resin

29
Q

What are the pros and cons of procelain?

A

Pros – esthetics
Cons – clacking sound, abrasive, weight

30
Q

What are the pros and cons of acrylic resin?

A

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

31
Q

When setting the maxillary anterior teeth, what should you remember?

A

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

32
Q

In the horizontal view, what should the measurement of the incisal edges of the maxillary central incisor be?

A

Approx. 8-10mm 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

33
Q

In occlusion with the lips together, what do the maxillary anterior teeth support?

A

the labial incisal 1/3 of the maxillary anterior teeth support the superior border of the lower lip

34
Q

How much of the maxilalry anterior teeth should be visible at rest from the frontal view?

A

1-2mm of the max centrals should be visible

35
Q

The plane of the max anterior teeth should be _________ to the interpupillary line

A

Parallel

36
Q

When smiling, the incisal edges of the max teeth should follow _______________________

A

The line of the lower lip

37
Q

How should mandibular anterior teeth be set?

A

On a curve that parallels the maxillary anterior teeth resulting in a uniform 1-2mm horizontal overlap.

38
Q

There should be _______________ vertical overlap

A

Zero or minimal (0.5mm)

39
Q

How should canines be positioned?

A

in a way in which the distal portion of the canine points to the desired position of the central fossae of the posterior teeth

40
Q

What is the buccal corridor?

A

the space between the buccal surfaces of the upper
teeth and the corners of the mouth when the patient smiles

41
Q

What is the golden proportion?

A

1,618

42
Q

When setting posterior teeth, what distance should be measured?

A

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

43
Q

The mandibular teeth should be on a ________ plane and extend _____ to ______ up the retromolar pad

A

flat plane; 1/2 to 2/3

44
Q

The mandibular posterior teeth are set over the _______ to gain a _______ advantage

A

ridge; retentive

45
Q

What should the maxillary posterior teeth occlude with?

A

Mandibular posterior teeth

46
Q

The occlusal-gingival height should be maintained where?

A

From the anterior teeth to the posterior teeth

_Complete Removable Pros (18 decks)

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