Learning Plan 1 Flashcards by Hunter Jacques

Dental arches

Maxillary- upper teeth

Mandibular- lower teeth

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Only bone that moves in the skull

Mandibular

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Homodont

One form, one function

Ex: animals, shark

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Heterodont

Several forms in the same arch with many functions

Ex: humans

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1 Heterodont quad contains what teeth

2 incisors, 1 canine, 2 premolars, 3 molars

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Only in permanent dentitions

Premolars (bicuspids)

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Incisors function

Cutting

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Canine function

Piercing

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Premolars function

Holding and grinding

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Molars function

Grinding

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Polyphyodontism

Many sets of teeth
Continuous replacement of teeth

Ex: animals

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Diphyodontism

2 sets of teeth

Ex: humans
Deciduous (primary) and permanent

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How many teeth in Primary/deciduous? And when do they erupt?

20, 6mos-2yrs

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How many teeth in secondary/permanent? When do they erupt?

32, 6-12yrs (except wisdom teeth)

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Dentition

Natural teeth in the dental arch

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Functions of primary dentitions?

Alignment, formation, speech, and mastication(eating)

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Functions of secondary dentitions?

Esthetics(bright/white), speech and mastication(eating)

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Secondary succedaneous

Permanent tooth that replaces a primary tooth. “Succeed”

Ex: premolars,

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Secondary nonsuccedaneous

Permanent molars

“Nonsucceed”

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Gingiva

Soft tissues surrounding the teeth.

Pink in color

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Teeth components

Hard tissues.
Mastication.
4 traits- incisors, canine, premolars, molars

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Tissues of the teeth

Enamel, dentin, cementum, and pulp

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How mineralized is enamel?

97%

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Dentin is..

Can it repair itself?

Bulk of tooth structure

May repair itself limitedly

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Color of enamel is based on what 3 things?

How thick enamel is, how mineralized, color of dentin

Cementum

Covers dentin on ROOT surface

Pulp

Middle of tooth

Pulp consists of

Chamber, canal, and horn

Functions of the pulp in teeth

Vascular-supplies blood Neurological- sensation nourishment-

Anatomical crown-

The portion of the tooth covered with enamel (white area)

Clinical crown-

Portion of the tooth seen in oral cavity | -starts at Gingiva

Anatomical root-

Covered with cementum

Clinical root-

Not seen in oral cavity

Acrodont attachment-

Teeth are fused to the height of the alveolar ridge | ex: snakes

Pleurodont attachment-

Teeth are fused to the side of alveolar ridge Ex: alligators and lizards

Thecodont attachment-

Teeth held in jaw by root. Alveolar bone around root. Ex: humans

Cementoenamel junction (CEJ)

Where cementum and enamel meet 30% meet 60% overlap 10% don't meet (gap) (dentin more sensitive)

Dentinenameljunction (DEJ)-

Where dentin and enamel meet

Dentinocementum junction (DCJ)-

Where dentin and cementum meet

Alveolar process-

What we call bone that supports teeth and surrounds

Apical foramen-

Opening near apex of tooth

Furcation-

Branching of tooth with more than one root Bi- 2 roots, molars mostly, one premolar Tri- 3 roots

Root trunk-

"Unbranched" portion of multirooted tooth

Root apex-

End of root

Periodontal ligament (PDL)

Fibrous ligament that connects cementum>alveolar process | Tooth>bone

Apical foramen-

Where blood supply enters at end of root

Gomphosis

Thecodonts

Humans are...

Heterodont, Thecodont, Diphyodont

Quadrant formulas

Primary- 2-1-2 | Permanent- 2-1-2-3

Mixed dentition

Both types of dentition in humans. When numbering use adult or baby tooth number as needed. Ex: 123D5

Primary universal numbering

A-J, K-T | Upper right primary molar to left primary molar then LL>RL

Primary palmer number

A-E w quad designation | A=central incisors

FDI primary numbering

5-8 for quad 1-5 for tooth | Ex:55= 5thquad,UR, 2nd molar

Universal numbering for permanent teeth

Continuous # system 1-32 1-8 9-16 17-24 25-32

Palmer numbering for permanent teeth

1-8 w quad designation. (Orthodontist use)

FDI system for permanent teeth

1-4 quad 1-8 tooth 11-18, 21-28, 31-38, 41-48

Front teeth: incisors and canines

Posterior

Back teeth: premolars and molars

``` Sextant 1 2 3 4 5 6 ```

``` 1-5 molars, premolars 6-11 canines, incisors 12-16 premolars, molars 17-21 premolars, molars 22-27 canines, incisors 28-32 molars, premolars ```

D-A-Q-T

Dentition-primary vs permanent Arch-maxillary vs mandibular Quadrant-left vs right Tooth-type and class Type and class=what kind 1st or 2nd, lateral or central, inc,can,pre,mol

Root thirds

Apical, middle, cervical

Crown thirds

Cervical, middle, occlusal/incisal

Proximal surface thirds

Buccal, middle, lingual

Direct view thirds

Mesial, middle, distal

Line angles

Indicates where 2 surfaces intersect or meet | Ex: labiolincisor

Point angles

Where 3 surfaces meet or intersect | Ex: a specific spot/dot