Lesson 12

Question 1

Selection Criteria

Answer 1

Tooth Size
• Tooth Shape
• Tooth Color
• Tooth material

Question 2

Selection of Teeth Size (3 Dimensions)

Answer 2

• Height (occlusogingivat)
• Width (mesiodistal)
• Thickness (faciolingual) - less significant

Question 3

Determining Tooth Width (Anthropometric Measurement)

Answer 3

• Bizygomatic width
• Cranial circumference
• Corner of the mouth
• Ala of the nose

Question 4

Guide to Vertical Height

Answer 4

• High lip line
- Incisogingival length should be greater
• Interarch space

Question 5

Selection of Tooth Form

Answer 5

Select a form that is in harmony with the face as well as personality of the patient.
• 3 important forms:
o Facial form
o Lateral or proximal form
o Incisal form

Question 6

Leon Williams Theory

Answer 6

> Facial form
o Square
o Straight
o Ovoid

> Proximal form
o Convex
o Tapering

> Incisal form
o Flat profile
o Convex profile

Question 7

The concept of dentogenics and dynesthetics
was proposed by Frush and Fisher.
• According to the concept, teeth were selected and
shaped based on sex, then personality and finally,
the age.

Answer 7

Dentogenic Concept

Question 8

Properties of Color

Answer 8

Properties of color:
• Hue - basic color
• Chroma (saturation) - degree of saturation/
amount of color.
• Value (brilliance) - amount of black or white
present in the object.
• Translucency - property of an object which permits
the passage of light through it.

Question 9

Color of Natural Teeth

Answer 9

• Age
• Canine
• Sex
• Demineralization
• Extrinsic stains
• Intrinsic stain

Question 10

Color is selected in three positions

Answer 10

Outside the mouth along the side of the
nose (in harmony with skin color) -
establishes the basic color.
o Beneath the lips with only the incisal
edge showing - simulates tooth exposure
when the mouth is relaxed.
o Beneath the lips with only the cervical
edge covered and most of the tooth
exposed (as in smile) - reveals the tooth
as in a smile.

Question 11

Requirements of Posterior Teeth

Answer 11

Should be able to chew food efficiently.
2. Should contribute to denture stability.
3. Should be comfortable to the underlying soft
tissue.
4. It should not cause any bone resorption.
5. It should contribute to esthetics.
6. It should not create any sound on impact.

Question 12

Requirements of Posterior Teeth (bullet)

Answer 12

• Mastication
• Preservation of Ridge
• Denture stability
• Premature contact or prematurity
• Soft tissue contact
• Esthetics

Question 13

Selection Criteria (Posterior Teeth)

Answer 13

1. Color
2. Mesiodistal width
3. Buccolingual width
4. Occlusogingival length (height)
5. Cuspal inclination
6. Material

Question 14

Classification of Artificial Posterior Teeth

Answer 14

A. Nonanatomic
B. Anatomic
C. Semianatomic

Question 15

Selection of Tooth Material

Answer 15

1. Acrylic teeth
2. Porcelain teeth
3. Porcelain acrylic combination
4. Acrylic teeth with amalgam inserts
5. Acrylic teeth with cast gold occlusal surfaces