Lecture 2- Nomenclature I Flashcards

1
Q

Diphyodont

A

Two generations of teeth present in a lifetime

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2
Q

Polyphyodont

A

Many successions of teeth to compensate for continual loss of teeth. Teeth in these animals are directly attached to the jaw bone and thus are frequently broken and lost during normal function

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3
Q

Incisors functions (list 4)

A

1) Incising and cutting
2) Support lip
3) Speech
4) Esthetics

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4
Q

Canine functions (list 2)

A

1) Tearing food

2) Support lip and face

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5
Q

Molar functions (list 2)

A

1) Crush and grind food

2) Support cheeks

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6
Q

What is found in permanent dentition but not primary?

A

Premolars and 3rd molars

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7
Q

Primary deciduous dentition stage begins when?

A

At 6 months with the eruption of mandibular central incisor

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8
Q

Complete set of primary teeth at what age?

A

2.5-3 years

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9
Q

When does primary dentition stage end?

A

At 6 years with the eruption of the 1st permanent tooth: the 1st mandibular molar

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10
Q

Mixed dentition stage

A

last 6-12 years of age one the last primary tooth is lost

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11
Q

Palmer notation

A

have to have the “box”/quadrant lines along with number 1-8

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12
Q

International (FDI)

A

quadrant number first then number 1-8

for primary, quadrants are 5-8

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13
Q

Apical foramen

A

An opening in the end of the tooth through which nerve and blood vessels

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14
Q

upper vs lower molars

A

upper molars have 3 roots and lower molars have 2 roots

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15
Q

Root trunk

A

Root trunk is present only in multirooted teeth and is the undivided part of the root near the cervical line

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16
Q

Furcation

A

The place on multirooted teeth where the root trunk divides into separates roots

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17
Q

Mandibular molars and maxillary 1st premolar

A

BIFURCATED

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18
Q

Maxillary molars are

A

TRIFURCATED

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19
Q

3 hard mineralized tissues

A

enamel, dentin, cementum

20
Q

1 soft tissue

21
Q

Peridontium (4 parts)

A

Periodontal ligament, alveolar bone, cementum, gingiva

22
Q

Hardest substance in human body

A

enamel; 96% inorganic material

NOT a continuous formation throughout life (unlike dentin)

23
Q

Dentin composition

A

70% inorganic material

makes up bulk of tooth

24
Q

Cementum composition

A

50% about inorganic material

25
DEJ
dentinoenamel junction | junction between enamel and dentin
26
CEJ
cementoenamel junction AKA cervical line!! where crown meets the root
27
Pulp
Dental pulp is the specialized connective tissue that carries blood and nerve supply to the tooth
28
Pulp space (2 parts)
1) Pulp chamber | 2) Root canal
29
Pulp chamber (3 parts)
Pulp horns, roof, floor
30
Root canal
Canal orifice, accessory canals, apical foramen
31
Alveolar bone
Bone that surrounds roots of teeth | Forms crypts of developING teeth and sockets of erupting teeth (developED)
32
Crypt vs socket
Crypt is a bony cavity enclosing a developING tooth while a socket is bone surrounding root of developED erupted tooth
33
Gingiva
mucosal tissue that covers the alveolar bone; only tissue in the periodontium visible in a healthy mouth
34
Attached gingiva
Firmly bound to the underlying alveolar bone. Attached to underlying bone
35
Marginal gingiva/free gingiva
Collar of thing gingiva that surrounds each tooth and in health adapts to the tooth but provides a potential space between gingiva and tooth called the gingival sulcus
36
Gingival sulcus
space between marginal gingiva and tooth Healthy gingival sulcus should be 1-3 mm
37
Free gingival margin (gingival margin)
Edge of the marginal gingiva/free gingiva closest to the chewing surface of teeth
38
Alveolar mucosa
Soft tissue covering located apical to the attached gingiva. It is dark pink due to increased blood supply and thinner epithelium covering . it is more delicate- non keratinized – loosely bound to underlying bone compared to attached gingiva
39
Mucogingival junction
Clinically visible boundary where the attached gingiva meets the alveolar mucosa; Not firmly bound to the underlying bone, adapted to the marginal part of mouth
40
Interdental gingiva/papilla
That part of the collar of the free gingiva that extends between the teeth Also known as cervical embrasure
41
Periodontal ligament
Attaches cementum/tooth to alveolar bone Transmits sensation of touch and pressure (NOT temperature)
42
Clinical crown
the portion of the tooth that projects above the gum line into the oral cavity (visible in the oral cavity)
43
Clinical root
portion of the tooth that is embedded in the jawbone and anchors the tooth
44
Anatomic crown
Anatomic crown is defined as the part of the tooth that is covered by enamel
45
Anatomic root
Anatomic root is the part of the tooth that is covered by cementum