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Anatomy 3 Final General > TEETH > Flashcards

TEETH Flashcards

1
Q

TEETH in general

A

Dentes!
- Principal organ of MASTRICATION

  • Composed of:
    1. CORPUS Dentis
    2. CORONA Dentis
    3. RADIX Dentis
    4. COLLUM Dentis
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2
Q

CORPUS DENTIS

A
  • Body of the Tooth
  • Applied for HYPSODONT teeth
  • At HYPSODONT Teeth, the CORONA and RADIX cannot be distinguished!
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3
Q

CORONA DENTES

A
  • Covered by ENAMEL
  • Demarceted from the ROOT by the NECK
  • Free distal portion of the Tooth
  • Projects into the mouth
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4
Q

Structures of CORONA DENTIS

A

I: CUSPIS CORONA DENTIS

  • cusp
  • one of the Main Projections !! on the OCCLUSAL SURFACE

II: APEX CUSPIS

III: TUBERCULUM CORONA DENTIS

  • Tubercle
  • Secondary Projection of the CROWN!!!
  • On the LINGUAL SURFACE of some incissors of Fe and Bo
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5
Q

RADIX DENTIS

A

Root!

  • embedded portion
  • NOT covered by ENAMEL

I: APEX RADICIS DENTIS

II: RADIX CLINICA

  • Clinical root
  • Concealed by the GINGIVA and ALVEOLUS

III: CANALIS RADICIS DENTIS - root canal

IV: FORAMEN APICIS DENTIS - orfice of the root canal!

V: PULPA DENTIS
- Pulp of the root
VI: PULPA CORONALIS 
- pulp in the crown
VII: PULPA RADICULARIS 
- Pulp in the root canal
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6
Q

COLLUM DENTIS

A

Constriction between crown and root

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7
Q

What kind of substances is the mammalian teeth composed of?

A
  1. ENAMEL
  2. DENTIN
  3. CEMENT
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8
Q

ENAMEL

A
  • Hard, white substance
  • Produces by AMELOBLASTS
  • COVERs the DENTIN in the CROWN
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9
Q

Structures in the ENAMEL

A
  1. PLICA ENAMELI
    - Longitudinal folds
    On premolar and molar teeth!
  2. INFUNDIBULUM DENTIS
    - invagination of Enamel on the OCCLUSAL surface of INCISSORS in Su+EQ🐷🐴
    - Invagianation of Enamel on the OCCLUSAL surface of PREMOLARS in Ru+EQ🐮🐴
  3. CRISTA ENAMELLI
    - Enamel crest
    - Free OCCLUSAL Edge on one of the Enamel layers of a worn teeth
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10
Q

DENTIN

A
  • Main substance of the Tooth
  • Calcified, collagenous matrix
  • Produces by the ODONTOBLASTS
  • DENTAL cavity - DENTAL PULP
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11
Q

CEMENT

A
  • Produced by CEMENTOBLASTS
  • Bone-like substance
  • covers the root!
  • IN HYPSODONT TEETH covers the CORPUS Dentis, Fills the PLICAE and INFUNDIBULUM
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12
Q

What is the CT for the Teeths?

A

PERIDONTUM

  • CT
  • Attaches the Tooth and the GINGIVA to the ALVEOLUS
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13
Q

SURFACES of the TEETHS

A
  1. FACIES OCCLUSALIS
    - Occlusal surface
    - meeting the Teeths of the oppsite jaw!
  2. FACIES VESTIBULARIS (facial, BUCCAL)
    - Outer surface
    - Directed toward the VESTIBULUM ORIS
  3. FACIES LINGUALIS
    - Inner surface
    - directed toward the Tongue
  4. FACIES CONTACTUS
    - each Tooth, EXEPT the LaST MOLAR, has 2 contactsurfces!
    - Related to the adjacent teeth in the same DENTAL Arch!
  5. FACIES MESIALLIS
    - on the first incissor next to the median plane
    - on the other teeth directed toward the 1st incissors!
  6. FACIES DISTALIS
    - Oposite surface from the FACIES MESIALIS
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14
Q

Types of TEETH

A
  1. BRACHYODONT
  2. HYPSODONT

A. INCISSORS

B. CANINES

C. CHEEK TEETH

  1. PREMOLARS
  2. MOLARS

D. DENS LUPINUS (eq)

E. DENS SECRETORIUS (car)

F. DENS DECIDUOS

G. DENS PERMANENTES

H. ARCUS DENTALIS SUPeRiOR
I. ARCUS DENTALIS INfERIOR

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15
Q

BRADYCHYDONT TOOTH

A

Consists of

  1. Corona Dentis
  2. Radix Dentis
  3. Collum Dentis

In:
Carnivores

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16
Q

HYPSODONT TOOTH

A

Consist of:
1. Corona Dentis and Collum Dentis are NOT EASY DISTINGUISHED

  1. only BODY and ROOT

In:
Ruminants
Horse

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17
Q

DENS LUPINUS

A

In EQ
Wolf Tooth
The first upper premolar (P1)
Rudimentary, INCONSTANT

18
Q

DENS SECRETORIUS

A
  • In Car
  • Secretorial Toot
  • Largest CUTTING Tooth in each jaw
  • LAST UPPER PREMOLAR and the
    FIRST LOWER MOLAR
19
Q

DENS DECIDUI

A 
MILK TEETH
Replaced by the permanent:
A. INCISORS
B. CANINES
C. PREMOLARS

MOLARS are NOT pressent in the DECIDUOS DENTITION

20
Q

DENS PERMANENTES

A

Permanent Teeth

21
Q

DENTAL ARCS

A
  1. ARCUS DENTALIS SUPERIOR
    - Arch formed by ALL of the UPPER TEETH
  2. ARCUS DENTALIS INFERIOR
    - Arch formed by ALL of the LOWER TEETH
22
Q

TEETH of THE CARNIVORES

A
  • Dentitition of the DOG Consists of TUBERCULATE teeth
  • well developed roots
  • BRADYCHYDONT
- DENTAL FORMULAE
DECIDUOS:
3-1-3
3-1-3
= 14(28)
iii c opppooO
iii c opppooo
= (7+7)*2 =28
PERMANENT:
3–1-4-2
3-1-4-3
= 21 (42)
III C LPPPMMo
III C LPPPMMM
= (10+11)*2 =42
23
Q

TOOTH ERUPTION in DOG

A

For the first 3 weeks of Life = NO TEETH

DECIDUOS
Incicors: 4-6weeks
Canine: 5-6 weeks
Premolars: 6 weeks
MOLARS : -
PERMANENT
Incissors: 3-5 months
Canine: 4-6 months
Premolars: 4-5 months 
Molars: 5-7 months
24
Q

Structures of the TEETH of the DOG

A

CINGULUM
CRISTA MARGINALIS
PREMOLARS
MOLARS

25
Q

The TEETH for the RUMiNANTs

DECIDUOS/Permanent formula

A

Formula PERMANENT DENTITION
2* (I 0/4, C 0/0, P 3/3, M 3/3)= 32
2* (I 0/3, C 0/1, P 3/3, M 3/3) = 32

Formula DECIDUOS TEETH
2* (Di 0/4, Dc 0/0, Dp 3/3) = 20
DECIDUOS incissors pressent at BIRTH!
2* (Di 0/3, Dc 0/1, Dp 3/3)= 20

26
Q

TEETH of RUMINANTS

INCISSORS and CANINES

A 
- Absent in UPPER JAW
DENTAL PAD 
- PULVINUS DENTALIS 
Takes place of the missing teeth
Acts as a antagonist to LOWER INCiSSORS
  1. INCISSORS
    - I1-4
    - CINGULUM
    - CRISTA MARGINALIS
    Known as:
    I: Central (I1)
    II: 1st Intermediate (I2)
    III: 2nd intermediate (I3)
    IV: Corner incissors (C)
27
Q

TEETH of RUMINANTS

CHEEK TEETH

A
  • HYPSODONTAL type
  1. UPPER CHEEK TEETH:
    - Upper cheek teeth - Increase in size from rostral to caudal!
  • The UPPER PREMOLARS -
    Has one INFUNDIBULUM
  • The UPPeR MOLARS
    Have 3 ROOTS, and 2 INFUNDIBULA
  1. The LOWER CHEEK TEETH
    - The LOWER PREMOLARS
    Have 2 Roots
    - The LOWER MOLARS
    Have 2 Roots
28
Q

THE TEETH of the HORSE

PEREMANENT DENTITITION

A

HYPSODONT
FORMULA:
2*(I3/3, C1/1, P3(4)/3, M3/3) = 40(42)

3-1-3(4)-3
3-1-3 -3

INCISORS

  1. Central (I1)
  2. Intermediate(I2)
  3. Corner INCIsSOR (I3)
29
Q

The TEETH of the HORSE

INCISORS

A
  • General shape = sided, slender, curved pyramid
  • BASE of the PYRAMID in young animals FLATTENED retrocaudally
  • APEX FLATTENED from side to side
  • BODY of the PYRAMIDS is
    ROUNDISH in cross section distally and
    more TRIANGULAR proximally.
  • EACH Incisor has a centrally placed INFUNDIBULUM (Cup)
  • Before the Tooth in wear:
    The ENAMEL of the INFUNDIBULUM continues with the EXTERNAL ENAMEL
    An ANNULAR fold is pressent on the OCCLUSAL surface
  • As the TOOTH is abraded through wear:
    A. Connection btw INFUNDIBULAR and EXTERNAL ENAMEL is LOST!
    B. Two ANNULAR ENaMEL CRESTS RESULTS
    C. two ANNULAR Crests separated by a circular layer of DENTINE
    D. When the two ENAMEL Crests are visuable - the incisors is said to be LEVEL!
    E. INFUNDIBULUM is lined with a layer of CEMENT
    F: The remaining LUMEN of INFUNDIBULUM filled with decomposing food particles - GIVInG BLacK Apperance.
    G: The BLACK cavity of INFUNDIBULUM is called CUP
    H: The bottom of the INFUNDIBULUM remains as a raised ENAMEL SPOT
    I: The CUP DISSAPAIRS - DENTAL STAR apparatet on the OCCLUSAL surface between the INFUNDIBULUM and the vestibular surface!
    J: DENTAL STAR - darker, secondary DENTIN, filles the DENTAL cavity!
30
Q

The TEETH Of the Horse

CANINUS

A

Develops only in the MALES

DIASTEMMA - between the CANINES and the CHEEK teeth

31
Q

The TEETH Of the Horse

UPPER PREMOLARS, MOLARS

A

Pressent 2 INFUNDIBULA

3 ROOTS

32
Q

The TEETH Of the Horse

LOWER PREMOLARS, MOLARS

A
  • True INFUNDIBULA absent!

- Two ROOTS

33
Q

The TEETH Of the Horse

What are the diff Teeths of the Horse?

A 
INCISORS
CANINUS (males)
CANINES
DENS LUPINUS
PREMOLARS 
MOLARS
34
Q

The TEETH Of the Horse

DENS LUPINUS

A 
In Eq
Wolf Tooth
The UPPER first premolar (P1)
Rudimentary, inconstant 
Falls out When the animal is still young
Not replaced 
It is pressent in the lower jaw, but does not erupt!
35
Q

The TEETH Of the Horse

DECIDUOS

A 
Formula 
2*(Di 3/3, Dc 1/1, Dp 3/3)= 28?
2*(Di 3/3, Dc 0/0, Dp 3/3)= 24
Simple 
3-0-3
3-0-3
36
Q

The TEETH Of the Horse

ERUPTION and DisSAPERAnCE of the CUP

A

Tooth- ERUPTION - DISSAP CUP
Id1 - 6days - 10months
Id2 - 6weeks -12months
Id3 - 6months - 18-24months

Mandib I1 - 2,5years - 6 years
Mandib I2 - 3,5years - 7 years
Mandib I3 - 4,5years - 8 years

Maxilary I1 - 2,5 years - 9 years
Maxillary I2 - 3,5 years - 10years
Maxillary I3 - 4,5 years - 11years

37
Q

The TEETH Of the Horse

Criteria to estimate AGE of the 🐴

A
  1. ERUPTION and wear of the DECIDUOS incissors
  2. ERUPTION and wear of the permanent incissors
  3. The shape of the OCCLUSAL surface of the permanent Incisors
  4. Profile ANGLE between the UPPER and LOWER Incisors
I1-I2-I3
Smooth (cups gone) 6y - 7y - 8y
Stars 8-9-10
Round 9-10-11
Triangular 16 - 17 - (17-18)
Rektangular 18-20++
38
Q

TOOTH ERUPTION in horses

In weeks

A

<2 weeks
- Central Incissors
4-6 weeks
- Intermediate incissors

39
Q

TOOTH ERUPTION in horses

In months

A

6-10 months

  • Corner Incissors
  • 1st premolar

12 months
- DENTAL star

40
Q

TOOTH ERUPTION in horses

In YEARS

A

2 years

  • All incissors in wear
  • 2nd MOLAR ERUPTs

2,5 years
- Central MOLARS permanent!!!

3 years

  • Central MOLAR in wear
  • 3rd PREMOLAR erupts

3,5 years
- Intermediate MOLARS permanent!!!

4 years:

  • Canine teeth
  • 4th premolar ERUPTION
  • 3rd molar ERUPTION

4,5 years:
- Corner incissors ERUPTION

5 years:
All Incissors in WEAR!!!

10 years
GALVAYNEs groove

11 years
Incissor HOOK

12 years
DENTAL star-Central

13 years
- Elongation of teeth

15 years
- GALVAYNEs groove 1/2 way down the Tooth

17 years

  • Lower incissors triangular
  • Angle increasing

20 years
- GALVAYNEs groove entire length of Tooth

Anatomy 3 Final General (39 decks)

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