Intro to Ortho

Question 1

What is orthodontics?

Answer 1

Diagnosis and treatment of misaligned jaws and teeth

Question 2

What are the form/esthetic goals of ortho?

Answer 2

• Smile design
• Facial harmony
• Symmetry
• Psychological well being

Question 3

What are the function goals of ortho?

Answer 3

• Optimize occlusion
• Best possible masticatory function
• Breathing
• Speech

Question 4

What is involved in occlusal function enhancement?

Answer 4

• Establish harmonious occlusal relationship in the three planes of space
• Establish anterior coupling
• Correct antero-posterior and vertical discrepancies
• Establish or normalize the transverse dimension

Question 5

What does interdisciplinary care involve?

Answer 5

• Involves several specialties of dentistry
• Requires careful panning
• Start with the end in mind
• Result is dependent on the team proficiency and the patient motivation

Question 6

What are the three planes of space to have issues in?

Answer 6

vertical
sagittal
transverse

Question 7

What is Dr. Angle’s definition of the correct occlusion and tooth position?

Answer 7

• Based on the relationship of the upper and lower first permanent molars in the AP dimension.
• “The mesiobuccal cusp of the upper first permanent molar is in occlusion with the buccal groove of the lower first molar and a full complement of teeth is present.”

Question 8

The ____________ cusp of the upper first permanent molar is in occlusion with the ___________ of the lower first molar and a full complement of teeth is present

Answer 8

mesiobuccal
buccal groove

Question 9

What is the most frequent class occlusion?

Answer 9

Class I

Question 10

Class I occusion is present in ___% of the population

Answer 10

70%

Question 11

What class?

Answer 11

Class I malocclusion

Question 12

Malocclusions are present in the three dimensions of space…

Answer 12

1. Sagittal
   - A-P positioning
   - Angle’s class I, II, III
2. Transverse
   - how teeth are positioned across midline
   - i.e., crossbites
3. Vertical
   - relationship between upper and lower teeth
   - i.e., deep and open bite or overbite

Question 13

What is a class II?

Answer 13

The upper first permanent molar is positioned mesially in relation to the lower first permanent molar

Question 14

In a class II relationship the upper first permanent molar is positioned __________ in relation to the lower first permanent molar

Answer 14

mesially

Question 15

What class?

Answer 15

Class II

Question 16

What class?

Answer 16

Class II

Question 17

What class?

Answer 17

Class III

Question 18

What is a class III relationship?

Answer 18

The upper first permanent molar is positioned distally in relation to the lower first permanent molar

Question 19

In a class III the upper first permanent molar is positioned _________ in relation to the lower first permanent molar

Answer 19

distally

Question 20

What class?

Answer 20

Class III

Question 21

What is the role of ortho in esthetics?

Answer 21

Improve quality of life by improving facial appearance

Question 22

What is the role of ortho in functional (occlual level)?

Answer 22

Improve QOL by improving function and mastication

Question 23

What is the role of ortho in functional (sleep apnea)?

Answer 23

QOL improvement by improving breathing and sleep–multidisciplinary approach

Question 24

What is the role of ortho in functional (Temporo-mandibular care)?

Answer 24

Applicable to a small group of patients (10%)

Question 25

What is known as "distal occlusion"?

Answer 25

Class II

Question 26

What is known as "mesial occlusion"?

Answer 26

Class III