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Morphology Exam 1 > Introduction to Dental Morphology > Flashcards

Introduction to Dental Morphology Flashcards

1
Q

What is morphology?

A

the study of the forms of things

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2
Q

Nomenclature of human teeth

A

these are the terms used to describe human dentition, the surfaces and indentifying characteristics

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3
Q

What is the dental arch?

A

teeth, gingiva, and associated bone

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4
Q

What is the maxillary arch?

A

the upper arch including the associated teeth

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5
Q

What is the mandibular arch?

A

the lower arch and associated teeth

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6
Q

What portion of the mouth is the only thing that moves?

A

mandible

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7
Q

How many permanent teeth are there?
incisors, canines, premolars, and molars

A

32
I = 8
C = 4
PM = 8
M = 12

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8
Q

What is the permanent dental formula?

A

the notation system which describes the number and order of permanent teeth

I2/2, C1/1, P2/2, M3/3

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9
Q

Each arch is divided in half at the ___
Each half arch is a _________

A

midline
quadrant
(maxillary R and L quadrant, mandibular R and L quadrant)

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10
Q

What are the anterior teeth? What are the posterior teeth?

A

anterior = incisors (8) and canines (4)
posterior = premolars (8) and molars (12)

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11
Q

How many decidous or primary teeth are there?

A

20 decidious teeth
10 per arch: 4 incisor, 2 canines, and 4 molars

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12
Q

What is the deciduous dental formula?

A

I2/2, C1/1, M2/2

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13
Q

What is the crown covered with? What is the root covered with?

A

crown = enamel
root = cementum

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14
Q

What is enamel?

A

the dense hydroxyapatite surface of the crown

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15
Q

What is pulp?

A

the vascular innervated portion of the tooth

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16
Q

What is dentin?

A

the inner hard layer of the crown and root

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17
Q

What is cementum?

A

the outer layer of the root surface

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18
Q

What is DEJ?

A

dentoenamel junction = junction of enamel and dentin layers

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19
Q

What is CEJ?

A

cementoenamel junction = junction of enamel and cementum layers

20
Q

What is the cervical line?

A

junction of the anatomical crown and root

21
Q

What is the clinical crown?

A

the portion of the tooth that is visible in the mouth?

22
Q

What is the anatomical crown?

A

the crown above the CEJ

23
Q

Surface terminology

A

Facial (buccal/labial) = outer most surface toward cheek or lips
Lingual (palatal) = inner most surface toward the tongue or palate
Mesial = toward the median line
Distal = away from the median line

24
Q

Incisal vs. Occlusal

A

the biting or incising edge of anterior teeth
the biting or chewing surface of posterior teeth

25
Q

What is a cusp? What is a fossa?

A

Cusp: projection on a crown
Fossa: depression or concavity between cusps or ridges

26
Q

What is a ridge?

A

Anatomy of a crown = linear elevation on the surgace of a tooth and is named according to its location

27
Q

What is a cingulum?

A

lingual crown projection on anterior teeth

28
Q

What is a groove?

A

line between the primary parts of a crown or root

29
Q

What is a pit?

A

pinpoint depression at the junction or termination of a groove

30
Q

What is a lobe?

A

primary center of development within a tooth

31
Q

What is mamelon?

A

round projections of enamel on newly erupted teeth
incisal remnant of incisor development

32
Q

What is furcation?

A

where root divides

33
Q

What is the root apex?

A

the opening in the root for entrace of the pulp

34
Q

What is the pulp chamber?

A

chamber containing dental pulp

35
Q

What is the pulp horn?

A

highest projection of pulp chamber within the crown - exposure of pulp horn may lead to root canal

36
Q

What is a pulp canal?

A

inner portion of the root containing the dental pulp

37
Q

What is the periodontium? What does it include?

A

the tissues that surround the teeth
gingiva, cementum, alveolar bone, periodontal ligament

38
Q

What is gingiva?

A

“gums”
covers the bone and surrounds the cervical portions of teeth

divided into: free gingiva, attached gingiva, and interdental papilla

pale pink

39
Q

alveolar mucosa

A

dark red, loose attachment to the underlying bone

40
Q

Mucogingival junction

A

junction of the aveolar mucosa and gingiva

41
Q

Free gingiva

A

close to the tooth crown, not attached to the bone

42
Q

free gingival groove

A

separates attached gingiva from free gingiva

43
Q

interdental papilla or gingival papilla (GP)

A

the triangular shaped gingiva that occupies the gingival embrasure

44
Q

Gingivcal sulcus

A

not seen visually, but can be evaluated with a periodontal probe
space betwen tooth surfave and narrow cervial collar of free gingiva
measurement can determine health and periodontal needs

45
Q

Periodontal Ligament (PDL)

A

surrounds tooth root and attaches tooth to alveolar bone (periodontal fibers)

46
Q

Alveolar bone

A

aka alveolar process; forms and support tooth sockets

Morphology Exam 1 (8 decks)

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