2. Evaluation of the Face and Basic Terminology

Question 1

3

By when will most children show eruption of primary incisors?

Question 2

3

When will most children show complete eruption of the primary dentition?

Question 3

3

What is more important than the child’s age at the time of eruption of a specific tooth?

Question 4

3

What succeedes primary molars?

Question 5

5

Know the primary tooth eruption sequence.

Question 6

8

What is the alternate form for numbering primary dentition often used by Orthodontists and pre-formed crown manufacturers?

Question 7

15

What is the alternate system for numbering the primary dentition often utilized by Orthodontists and preformed crown manufacturers?

Question 8

16

When does primary tooth eruption begin and when is it typically complete by?

Question 9

16

Which primary teeth erupt first?

Question 10

16

Which primary teeth typically erupt last?

Question 11

16

What is the eruption sequence of primary teeth in both the maxillary and mandibular arches?

Question 12

16

By what age is primary occlusion typically established?

Question 13

16

What is the eruption sequence of permanent teeth in the maxilla?

Question 14

16

What is the eruption sequence of permanent teeth in the mandible?

Question 15

17

What is the definition of overbite?

Question 16

17

How is overbite typically reported?

Question 17

17

What is the normal range for the percentage of overbite?

Question 18

17

When analyzing overbite in pediatric patients, what must you often take into account?

Question 19

18

What is it called when there is no vertical overlap of the central incisors?

Question 20

18

What is relative vertical position of the central incisors recorded as in anterior open bite cases?

Question 21

18

What are two potential causes of overbite?

Question 22

18

What are three examples of common extrinsic factors that cause open bite in children?

Question 23

19

What is it important to look for in deep bite cases?

Question 24

20

What is the definition of overjet?

Question 25

What is overjet typically reported as?

Question 26

20

What is the normal range for overjet?

Question 27

21

How is the overjet expressed if the maxillary central incisor is lingual to the labial surface of the mandibular incisor? What are these patients often classified as having?

Question 28

22

How many parts is the face broken up into when doing Frontal Plane Horizontal Assessment?

Question 29

22

What determines the central and medial fifths in Frontal Plane Horizontal Assesssment?

Question 30

22

Where should the nose and chin be centered within for frontal plane horizontal assessment?

Question 31

22

How should the nose compare to the central fifth in frontal plane horizontal assessment?

Question 32

22

What should interpupillary distance equal in frontal plane horizontal assessment?

Question 33

23

How is the face broken up when doing frontal plane vertical assessment?

Question 34

23

In frontal plane vertical assessment, an ideally proportional face can be divided into equal thirds, but there is acceptance for the ____ third to be slightly longer than the ____ third.

Question 35

23

In frontal plane vertical assessment, the lower facial third can be subdivided again into thirds again with the mouth being where relative to the base of the nose and chin?

Question 36

24

What does dolichofacial mean?

Question 37

24

What does mesiofacial mean?

Question 38

24

What does brachyfacial mean?

Question 39

25

What does a facial profile convexity or concavity result from a disproportion in?

Question 40

25

Can you determine which jaw (maxilla or mandible) is causing facial disharmony just by determining the facial profile?

Question 41

25

What class of jaw relationship does a convex facial profile indicate? What can this result from?

Question 42

25

What class of jaw relationship does a concave profile indicate?

Question 43

26

What is the Frankfort horizontal plane frequently used in the analysis of?

Question 44

26

What is the Frankfort Horizontal plane defined as?

Question 45

26

Where does the vertical reference line often added perpendicular to the Frankfort Horizontal line run through?

Question 46

27

What is the facial plane angle defined as?

Question 47

27

What does the faical plane angle determine?

Question 48

27

What is the clinical norm for the facial plane angle? What is the clinical deviation?

Question 49

27

What does a facial plane angle greater than 90 indicate?

Question 50

27

What does a facial profile less than 90 degrees indicate?

Question 51

28

What is the technique used to visualize the mandibular plane?

Question 52

28

What is the mandibular plane angle defined as?

Question 53

28

What is the clinical norm for the mandibular plane angle? What is the clinical deviation?

Question 54

28

What does a mandibular plane angle greater than 31 degrees indicate?

Question 55

28

What does a facial plane angle of less than 21 degrees indicate?

Question 56

29

What is the nasolabial angle defined as?

Question 57

29

What does the nasolabial angle provide an assessment of?

Question 58

29

What is the clinical norm for the nasolabial angle?

Question 59

29

What does a nasolabial angle greater than 114 degrees indicate?

Question 60

29

What may a nasolabial angle less than 96 degrees be associated with?

Question 61

30

What is the definition of the aesthetic plane (E-plane)

Question 62

30

What is the definition of lip protrusion?

Question 63

30

What is the interpretation of the lip protrusion measurement?

Question 64

30

What is the clinical norm for the lip protrusion measurement at 8.5 years old and at adulthood?

Question 65

30

What is the clinical deviation of lip protrusion measurement?