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2A Oral Anatomy Midterms > UNIT III - Biology of Human Dentition > Flashcards

UNIT III - Biology of Human Dentition Flashcards

1
Q

______ - refers to two bony structures, that house the teeth and provide the foundation for the oral cavity.

A

Jaws

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2
Q

______
- paired
- stationary
- upper jaw

A

Maxilla

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3
Q

______
- single
- movable
- lower jaw

A

Mandible

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4
Q

What type of bone is Maxilla?

A

irregular bone

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5
Q

Number of Maxilla

A

2

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6
Q

What bones articulated with Maxilla?

A

frontal
ethmoid
sphenoid
nasal
zygomatic
lacrimal
inferior nasal concha
palatine
vomer

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7
Q

What type of bone is Mandible?

A

irregular bone

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8
Q

Number of Mandible

A

1

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9
Q

Mandible articulates with what bone?

A

temporal

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10
Q

______ - the natural arrangement of teeth in the mouth, including the type, number, and arrangement of teeth in both the upper and lower jaws.

A

DENTITION

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11
Q

CLASSES OF HUMAN TEETH

A

MOLAR
PREMOLAR
CANINE
INCISOR

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12
Q

______ - expresses the type and number of teeth per side

A

DENTAL FORMULA

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13
Q

Number of Teeth (Deciduous Dentition)

A

20

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14
Q

Number of Teeth (Permanent Dentition)

A

32

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15
Q

______ - systematic manner of designating numbers, letters to the type of tooth present whether they belong to the temporary or permanent set

A

DENTAL NOTATION

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16
Q

DENTAL NOTATIONS

A

Palmer Notation
Universal System
2-Digit System
Haderup System

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17
Q

IN WORDS

1.) ______: permanent or deciduous
2.) ______: maxillary or mandibular
3.) ______: right or left
4.) ______: incisor, canine, premolar
or molar

A

Dentition
Arch
Quadrant
Type of tooth

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18
Q

______
- also known as Zsigmondy Notation System
- introduced by ______ of Vienna in ______

A

PALMER NOTATION, Adolph Zsigmondy, 1861

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19
Q

______ - this method uses symbols to designate the quadrant of the tooth and a number/letter that indicates the position of the tooth from the midline

A

PALMER NOTATION

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20
Q

______
- recommended by the American Dental Association in ______.
- this numbering system starts from the rear right upper molar to the rear left upper molar precedes to the left lower molar up to the lower right molar

A

UNIVERSAL SYSTEM, 1968

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21
Q

______
- proposed by Fédération Dentaire Internationale (FDI), adopted by the World Health Organization
- the first digit represents the quadrant of the tooth and the second digit represents the number of the tooth from the midline of the face

A

TWO-DIGIT SYSTEM

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22
Q

______
- devised by ______ of Denmark in ______.
- a variant of the eight-tooth quadrant system in which plus (+) and minus (-) were used to differentiate between upper and lower quadrants and between right and left quadrants.

A

HADERUP SYSTEM, Viktor Haderup, 1891

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23
Q

PRIMARY DENTITION

  • ______ teeth
  • also called ______, ______, ______, or ______
  • ______ to ______
A

20, BABY, DECIDUOUS, MILK, LACTEAL, 6 months, 12 years old

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24
Q

PERMANENT DENTITION

  • ______ teeth
  • ______ to ______
  • consist of ______ and ______ teeth
A

32, 6 years old, 18 years old, succedaneous, accessional

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25
Q

DEVELOPMENT OF TEETH

  • ______ week of embryonic life
  • begins with the development of ______
  • narrow band of thickened ______
A

6th, dental lamina, oral epithelium

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26
Q

A tooth germ is made up of three parts:

A

ENAMEL ORGAN
DENTAL PAPILLA
DENTAL SAC

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27
Q

A tooth germ is made up of three parts:

______ - produces the enamel

A

Enamel organ

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28
Q

A tooth germ is made up of three parts:

______ - develops into dentin and pulp

A

Dental papilla

29
Q

A tooth germ is made up of three parts:

______ - where cementum, periodontal ligament, and bone is derived

A

Dental sac

30
Q

STAGES OF TOOTH DEVELOPMENT

A

Initiation (Bud Stage)
Proliferation (Cap Stage)
Histodifferentiation (Bell Stage)
Apposition
Intraosseous
Into oral cavity

31
Q

STAGES OF TOOTH DEVELOPMENT

______
- 20 tooth buds begin to form
- correspond to the position of the future primary dentition

32
Q

STAGES OF TOOTH DEVELOPMENT

______
- shallow invagination on the deep surface of the bud
- consists of 3 components: (1) ______, (2) ______, and (3) ______

A

Cap Stage, outer enamel epithelium, inner enamel epithelium, stellate reticulum

33
Q

STAGES OF TOOTH DEVELOPMENT

______
- concavity continues to deepen, dentinoenamel junction is already identifiable

A

Bell Stage

34
Q

STAGES OF TOOTH DEVELOPMENT

______
- begins when enamel and deposition have formed the area which will become the cementoenamel junction
- enamel organ develops ______

A

Root development, Hertwig’s epithelial root sheath (HERS)

35
Q

LIFE CYCLE OF THE TOOTH

______ (______)
- affects the presence or absence of tooth buds

A

Initiation, Bud Stage

36
Q

LIFE CYCLE OF THE TOOTH

______ (______)
- influences the general size and proportions of the tooth

A

Proliferation, Cap Stage

37
Q

LIFE CYCLE OF THE TOOTH

______ (______)
- involves the formation of potential and dentin forming cells

A

Histodifferentiation, Bell Stage

38
Q

LIFE CYCLE OF THE TOOTH

______ (______)
- process that determines the shape and size of the tooth

A

Morphodifferentiation, Bell Stage

39
Q

LIFE CYCLE OF THE TOOTH

______ (______)
- completion of the root and regular laying down of enamel and dentin

A

Apposition, Bell Stage

40
Q

LIFE CYCLE OF THE TOOTH

______
- hardening of tooth tissues by the deposition of inorganic calcium salts

A

Calcification

41
Q

LIFE CYCLE OF THE TOOTH

A

Initiation - (Bud Stage)
Proliferation - (Cap Stage)
Histodifferentiation - (Bell Stage)
Morphodifferentiation - (Bell Stage)
Apposition - (Bell Stage)
Calcification

42
Q

NOLLA’S STAGES OF CALCIFICATION

A

Stage 0 - absence of crypt
Stage 1 - presence of crypt
Stage 2 - initial calcification
Stage 3 - 1/3 of crown completed
Stage 4 - 2/3 of crown completed
Stage 5 - crown almost complete
Stage 6 - eruptive tooth movement begins (crown formation
complete)
Stage 7 - 1/3 of root completed
Stage 8 - alveolar crest pierced (2/3 root development)
Stage 9 - gingival margin pierced (3/4 root development)
Stage 10 - apical end of root completed

43
Q

______
- physiologic movement of teeth within and through the jaw

44
Q

______
- shedding or loss of a tooth

A

Exfoliation

45
Q

CHRONOLOGY OF DEVELOPMENT

A

Beginning of Calcification
Crown completion
Emergence
Root completion

46
Q

______
- first sign of appearance in the oral cavity
- between 6th and 30th months of postnatal life

47
Q

______
- movement of teeth within and through the bone until it contacts the opposing teeth
- begins when the crown is complete and the root starts
to form

48
Q

STAGES OF TOOTH ERUPTION

A

Pre-eruptive Stage
Pre-functional Eruptive Stage
Functional Eruptive Stage

49
Q

STAGES OF TOOTH ERUPTION

______
- movement positioning the tooth & its crypt within the growing jaws preparatory to tooth eruption:
a) body movement of tooth germ
b) growth of the tooth germ
c) relative change in the position of associated deciduous and permanent tooth germ

A

Pre-eruptive Stage

50
Q

STAGES OF TOOTH ERUPTION

______
- begins at the initiation of root formation and ends when the teeth reach occlusal contact

A

Pre-functional Eruptive Stage

51
Q

STAGES OF TOOTH ERUPTION

______
- begins when the teeth come into occlusion and continues until teeth are lost and characterized by occlusal wear and compensating eruption

A

Functional Eruptive Stage

52
Q

TYPES OF ERUPTION

A

Active eruption
Passive eruption

53
Q

TYPES OF ERUPTION

______ - the actual movement of the teeth toward the occlusal plane

A

Active eruption

54
Q

TYPES OF ERUPTION

______ - the separation of primary attachment epithelium from the enamel

A

Passive eruption

55
Q

SEQUENCE OF ERUPTION
PRIMARY DENTITION
(IN MONTHS)

A

MAN A (6-8)
MAX A (7-10)
MAX B (8-11)
MAN B (9-13)
MAX D (12-15)
MAN D (12-16)
MAX C (16-19)
MAN C (17-20)
MAN E (20-26)
MAX E (25-28)

56
Q

SEQUENCE OF ERUPTION
PERMANENT DENTITION
(IN YEARS)

A

MAN 6 (6-7)
MAX 6 (6-7)
MAN 1 (6-7)
MAX 1 (7-8)
MAN 2 (7-8)
MAX 2 (8-10)
MAN 3 (8-10)
MAX 4 (10-12)
MAN 4 (10-12)
MAX 5 (10-12)
MAN 5 (11-13)
MAX 3 (11-13)
MAN 7 (11-13)
MAX 7 (11-13)
MAN 8 (17-20)
MAX 8 (17-20)

57
Q

RULES OF “SIX” IN TOOTH DEVELOPMENT

______: beginning of dental development

A

6 weeks old in utero

58
Q

RULES OF “SIX” IN TOOTH DEVELOPMENT

______: emergence of the first primary tooth

A

6 months old

59
Q

RULES OF “SIX” IN TOOTH DEVELOPMENT

______: emergence of the first permanent tooth

A

6 years old

60
Q

RULES OF “SIX/FOUR” IN PRIMARY DENTITION

______: 4 teeth (______ + ______)

A

6 months, lower central, upper centrals

61
Q

RULES OF “SIX/FOUR” IN PRIMARY DENTITION

______: 8 teeth (______ and ______)

A

12 months, upper laterals, lower laterals

62
Q

RULES OF “SIX/FOUR” IN PRIMARY DENTITION

______: 12 teeth (______ and ______)

A

18 months, upper first molars, lower first molars

63
Q

RULES OF “SIX/FOUR” IN PRIMARY DENTITION

______: 16 teeth (______ and ______)

A

24 months, upper canines, lower canines

64
Q

RULES OF “SIX/FOUR” IN PRIMARY DENTITION

______: 20 teeth (______ and ______)

A

30 months, lower second molars, upper second molars

65
Q

RULES OF “FOUR” IN PERMANENT DENTITION

At ______, 4 first molars have initiated calcification

66
Q

RULES OF “FOUR” IN PERMANENT DENTITION

At ______, all crowns have initiated calcification

A

4 years of age

67
Q

RULES OF “FOUR” IN PERMANENT DENTITION

At ______, all crowns are completed

A

8 years of age

68
Q

RULES OF “FOUR” IN PERMANENT DENTITION

At ______, all crowns emerge

A

12 years of age

69
Q

RULES OF “FOUR” IN PERMANENT DENTITION

At ______, roots are completed

A

16 years of age

2A Oral Anatomy Midterms (2 decks)

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