暗記メーカー

暗記メーカー

​
ログイン
Dentin
78問 • 1年前
  • Tameyra Stefani Al-Suhairy
    • 通報

    問題一覧

  • 1

    are specialized connective tissues of mesodermal origin, formed from the dental papilla of the tooth bud

    dentin and pulp tissues

  • 2

    • Forms the largest portion of tooth structure. • Normally, yellow white slightly darker the enamel

    dentin

  • 3

    Externally,It is covered by enamel on the anatomical crown and by cementum on the anatomical root.

    dentin

  • 4

    • Internally, ___ forms the wall of the pulp cavity (PULP CHAMBER AND PULP CANAL)

    dentin

  • 5

    Provides the bulk and general form of tooth. 2. Determines the shape of the crown. 3. Protection of the brittle enamel

    dentin

  • 6

    4 odontogenesis

    Histodifferentiation, Matrix Formation, Mineralization, Maturation

  • 7

    1. Ectomesenchymal cells elongate 2. Organelles increase in the cells 3. Odontoblastic process appears

    Bell stage

  • 8

    ectomensenchymal cells proliferate

    Bud and cap stage

  • 9

    PREDENTIN FORMATION 1. COLLAGEN protein synthesis in rER of odontoblasts 2. The proteins are packaged into vesicles in golgi complex 3. Vesicles migrate to the area of odotoblastic process 4. Release of secreted protein outside the cell through exocytosis

    Apposition stage

  • 10

    GLOBULAR AND LINEAR CALCIFICATION

    MINERALIZATION

  • 11

    1. HA in Globules or calcospherules 2. Globules expand and fuse together

    GLOBULAR CALCIFICATION

  • 12

    Crystals are deposited in linear direction

    LINEAR CALCIFICATION

  • 13

    or imbrication lines, appear as fine lines or striations in dentin. - run at right angles to the dentinal tubules.

    incremental lines of von Ebner

  • 14

    These lines reflect the 5-day rhythmic, recurrent deposition of dentin matrix as well as hesitation in the daily formative process (20 microns)

    incremental lines of von Ebner or imbrication lines

  • 15

    INCREMENTAL LINES OF RETZIUS

    enamel

  • 16

    INCREMENTAL LINES OF VON EBNER

    dentin

  • 17

    MARKS THE APPOSITIONAL GROWTH OF ENAMEL AND DENTIN

    incremental lines of von Ebner or imbrication lines,

  • 18

    hypomineralization between the globules.

    INTERGLOBULAR DENTIN

  • 19

    Forms in crowns of teeth in the circumpulpal dentin j

    INTERGLOBULAR DENTIN

  • 20

    The dentinal tubules pass u n i n t e r r u p t e d l y , t h u s demonstrating a defect of mineralization & not of matrix formation

    INTERGLOBULAR DENTIN

  • 21

    Some of the incremental lines are accentuated because of disturbances in the matrix and mineralization process.

    contour lines of owen.

  • 22

    continues after tooth eruption and throughout the life of the pulp.

    dentin formation

  • 23

    begins at areas subjacent to the cusp tip or incisal ridge and gradually spreads to the apex of the root.

    dentin formation

  • 24

    yellowish elastic lower content of mineral salts - more radiolucent

    dentin

  • 25

    Inrganic matter: HYDROXYAPATITE CRYSTALS Ca10(PO4)6(OH)2

    65%

  • 26

    Organic and water percentage Form the pulp tissue Exudate. imparts elasticity to dentin

    30%

  • 27

    Organic matters and water COLLAGEN Non-collagenous Proteins GROUND SUBSTANCE: Mucopolysaccharides (proteoglycans, GAGs)

    35%

  • 28

    Unmineralized zone of dentin. The most recently formed layer of dentin is always on the pulpal surface.

    PRE DENTIN

  • 29

    This unmineralized zone of dentin is immediately next to the cell bodies of odontoblasts

    PRE DENTIN

  • 30

    Composed primarily of collagen fibers and water.

    PRE DENTIN

  • 31

    Dentin forming the initial shape of the tooth

    PRIMARY DENTIN

  • 32

    Usually completed after 3 years after tooth erruption.

    PRIMARY DENTIN

  • 33

    represents all the dentin that is formed before the completion of root formation

    PRIMARY DENTIN

  • 34

    first formed dentin in the crown underlying the dentinoenamel junction. outer or most peripheral part of the primary dentin & is about 20um thick.

    MANTLE DENTIN

  • 35

    forms the remaining primary dentin or bulk of the tooth. Represents all of the dentin formed prior to root completion. fibrils are much smaller in diameter & are more closely packed together. Slightly more mineral content than mantle dentin.

    CIRCUMPULPAL DENTIN

  • 36

    narrow band of dentin bordering the pulp and representing the dentin formed after root completion. fewer tubules

    SECONDARY DENTIN

  • 37

    Replaced by odontoblast (termed secondary odontoblast)

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 38

    Response to moderate-level irritants such as attrition, abrasion, erosion and trauma

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 39

    appears as a localized dentin on the wall surface of pulp cavity.

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 40

    small canals that extend through the entire width of dentin, from the pulp to the DEJ

    dentinal tubules

  • 41

    opened and widened by acid application

    tubule apertures

  • 42

    It is the cytoplasmic cell process (Tomes fiber) of an odontoblast.

    Odontoblastic process

  • 43

    cell bodies of odontoblasts are in the pulp near the dentin- pulp border

    Odontoblastic process

  • 44

    the dental lymph or fluid of dentin transudate of extracellular fluid, mainly cytoplasm of odontoblastic processes, from the dental pulp via the dentinal tubules.

    Dentinal fluid

  • 45

    more highly mineralized than intertubular dentin.

    PERITUBULAR DENTIN

  • 46

    twice as thick in outer dentin (approx. 0.75um) than in inner dentin (0.4um).

    PERITUBULAR DENTIN

  • 47

    Organic matrix is lost along with mineral after decalcification.The calcified tubule wall has an inner organic lining termed the lamina limitans, high in glucosaminoglycans (GAG)

    PERITUBULAR DENTIN

  • 48

    main body of dentin.

    INTERTUBULAR DENTIN

  • 49

    located between the dentinal tubules or, more specifically, between the zones of peritubular dentin. Its organic matrix is retained after decalcification

    INTERTUBULAR DENTIN

  • 50

    About one-half of its volume is organic matrix, specifically collagen fibers. The fibrils range from 0.5 to 0.2um in diameter.

    INTERTUBULAR DENTIN

  • 51

    Can be seen radiographically into the form of radioopaque area in the s-shape tubule.

    SCLEROTIC DENTIN

  • 52

    harder, denser, less sensitive, and more protective of the pulp against subsequent irritations.

    SCLEROTIC DENTIN

  • 53

    Sclerosis resulting from aging

    PHYSIOLOGIC DENTIN SCLEROSIS

  • 54

    sclerosis resulting from a mild irritation

    REACTIVE DENTIN SCLEROSIS

  • 55

    Dentinal tubules with debris.

    Smear Plugs

  • 56

    greatly reduce permeability of cut dentin surface

    Smear layer and smear plugs

  • 57

    Thin altered surface wherever the dentin has been cut or abraded

    Smear layer

  • 58

    Few microleakage in thickness and is composed of denatured collagen, hydroxyapatite and other cutting debris

    Smear layer

  • 59

    Destruction of exposed collagen

    DENATURATION

  • 60

    in which stimuli directly effect the nerve endings in the tubules.

    Direct conduction theory

  • 61

    membrane of the odontoblast process conducts an impulse to the nerve endings in the predentin, odontoblast zone, and pulp

    Transduction theory

  • 62

    stimuli cause an inward or outward movement of fluid in the tubule, which in turn produces movement of the odontoblast and its processes.

    Fluid or hydrodynamic theory

  • 63

    Referring to the outward (exposed) porton of reactive sclerotic dentin where slow caries has destroyed formerly overlying tooth structure , leaving a hard darkened surface.

    EBURNATED DENTIN

  • 64

    It is encountered whenever odontoblast and their processes are stimulated during operative procedures

    Dentin sensitivity

  • 65

    Is primarily dependent on the remaining dentin thickness and the diameter of tubules.

    Dentin Permeability

  • 66

    is less effective barrier than is superficial dentin near the dentino enamel junction and dentinocemental junction

    Deep dentin

  • 67

    Dissolution of hydroxyapatite crystals

    demineralization

  • 68

    Caries formation is a two-step process;

    demineralization, DENATURATION

  • 69

    Dentin demineralizes at

    pH6.2.

  • 70

    remineralization of demineralized dentin relies on intergrity of collagen framework.

    CARIES REVERSAL

  • 71

    dentin softer than enamel.

    true

  • 72

    dentin is opaque or dull, less reflective to light than similar enamel which appear shiny

    true

  • 73

    in explorer tip, enamel surface provide sharper , and higher pitch sound than dentin surface

    true

  • 74

    have acidic “conditioners” that remove smear layer and partially demineralized the intertubular dentin.

    DENTIN BONDING

  • 75

    HYBRID LAYER Most dentin bonding system remove or stabilize smear layer allowing to penetrate.

    DENTIN BONDING

  • 76

    Resultant resin interdiffusion zone.

    DENTIN BONDING

  • 77

    PERITUBULAR DENTIN calcified tubule wall has an inner organic lining termed the

    lamina limitans

  • 78

    fibrils found in this zone are perpendicular to the dentinoenamel junction

    MANTLE DENTIN

    • Sporeformers

    Sporeformers

    Tameyra Stefani Al-Suhairy · 44問 · 1年前

    Sporeformers

    Sporeformers

    44問 • 1年前
    Tameyra Stefani Al-Suhairy

    Spirochetes

    Spirochetes

    Tameyra Stefani Al-Suhairy · 46問 · 1年前

    Spirochetes

    Spirochetes

    46問 • 1年前
    Tameyra Stefani Al-Suhairy

    Subcutaneous, Systemic, Opportunistic Mycoses

    Subcutaneous, Systemic, Opportunistic Mycoses

    Tameyra Stefani Al-Suhairy · 75問 · 1年前

    Subcutaneous, Systemic, Opportunistic Mycoses

    Subcutaneous, Systemic, Opportunistic Mycoses

    75問 • 1年前
    Tameyra Stefani Al-Suhairy

    Mycobacteria

    Mycobacteria

    Tameyra Stefani Al-Suhairy · 46問 · 1年前

    Mycobacteria

    Mycobacteria

    46問 • 1年前
    Tameyra Stefani Al-Suhairy

    Bacterial Classification, morphology, utrastructure

    Bacterial Classification, morphology, utrastructure

    Tameyra Stefani Al-Suhairy · 64問 · 1年前

    Bacterial Classification, morphology, utrastructure

    Bacterial Classification, morphology, utrastructure

    64問 • 1年前
    Tameyra Stefani Al-Suhairy

    HIV

    HIV

    Tameyra Stefani Al-Suhairy · 31問 · 1年前

    HIV

    HIV

    31問 • 1年前
    Tameyra Stefani Al-Suhairy

    CORONA

    CORONA

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    CORONA

    CORONA

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    PAPILLO

    PAPILLO

    Tameyra Stefani Al-Suhairy · 15問 · 1年前

    PAPILLO

    PAPILLO

    15問 • 1年前
    Tameyra Stefani Al-Suhairy

    ADENO

    ADENO

    Tameyra Stefani Al-Suhairy · 16問 · 1年前

    ADENO

    ADENO

    16問 • 1年前
    Tameyra Stefani Al-Suhairy

    POX

    POX

    Tameyra Stefani Al-Suhairy · 6問 · 1年前

    POX

    POX

    6問 • 1年前
    Tameyra Stefani Al-Suhairy

    PARVO

    PARVO

    Tameyra Stefani Al-Suhairy · 25問 · 1年前

    PARVO

    PARVO

    25問 • 1年前
    Tameyra Stefani Al-Suhairy

    HEPATOTROPHIC

    HEPATOTROPHIC

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    HEPATOTROPHIC

    HEPATOTROPHIC

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    PICORNA

    PICORNA

    Tameyra Stefani Al-Suhairy · 25問 · 1年前

    PICORNA

    PICORNA

    25問 • 1年前
    Tameyra Stefani Al-Suhairy

    RABIES

    RABIES

    Tameyra Stefani Al-Suhairy · 26問 · 1年前

    RABIES

    RABIES

    26問 • 1年前
    Tameyra Stefani Al-Suhairy

    PARAMYXO

    PARAMYXO

    Tameyra Stefani Al-Suhairy · 20問 · 1年前

    PARAMYXO

    PARAMYXO

    20問 • 1年前
    Tameyra Stefani Al-Suhairy

    HERPES

    HERPES

    Tameyra Stefani Al-Suhairy · 40問 · 1年前

    HERPES

    HERPES

    40問 • 1年前
    Tameyra Stefani Al-Suhairy

    ORTHO

    ORTHO

    Tameyra Stefani Al-Suhairy · 7問 · 1年前

    ORTHO

    ORTHO

    7問 • 1年前
    Tameyra Stefani Al-Suhairy

    FLAVI

    FLAVI

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    FLAVI

    FLAVI

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    TOGA

    TOGA

    Tameyra Stefani Al-Suhairy · 19問 · 1年前

    TOGA

    TOGA

    19問 • 1年前
    Tameyra Stefani Al-Suhairy

    VIRUS STRUCTURE

    VIRUS STRUCTURE

    Tameyra Stefani Al-Suhairy · 16問 · 1年前

    VIRUS STRUCTURE

    VIRUS STRUCTURE

    16問 • 1年前
    Tameyra Stefani Al-Suhairy

    問題一覧

  • 1

    are specialized connective tissues of mesodermal origin, formed from the dental papilla of the tooth bud

    dentin and pulp tissues

  • 2

    • Forms the largest portion of tooth structure. • Normally, yellow white slightly darker the enamel

    dentin

  • 3

    Externally,It is covered by enamel on the anatomical crown and by cementum on the anatomical root.

    dentin

  • 4

    • Internally, ___ forms the wall of the pulp cavity (PULP CHAMBER AND PULP CANAL)

    dentin

  • 5

    Provides the bulk and general form of tooth. 2. Determines the shape of the crown. 3. Protection of the brittle enamel

    dentin

  • 6

    4 odontogenesis

    Histodifferentiation, Matrix Formation, Mineralization, Maturation

  • 7

    1. Ectomesenchymal cells elongate 2. Organelles increase in the cells 3. Odontoblastic process appears

    Bell stage

  • 8

    ectomensenchymal cells proliferate

    Bud and cap stage

  • 9

    PREDENTIN FORMATION 1. COLLAGEN protein synthesis in rER of odontoblasts 2. The proteins are packaged into vesicles in golgi complex 3. Vesicles migrate to the area of odotoblastic process 4. Release of secreted protein outside the cell through exocytosis

    Apposition stage

  • 10

    GLOBULAR AND LINEAR CALCIFICATION

    MINERALIZATION

  • 11

    1. HA in Globules or calcospherules 2. Globules expand and fuse together

    GLOBULAR CALCIFICATION

  • 12

    Crystals are deposited in linear direction

    LINEAR CALCIFICATION

  • 13

    or imbrication lines, appear as fine lines or striations in dentin. - run at right angles to the dentinal tubules.

    incremental lines of von Ebner

  • 14

    These lines reflect the 5-day rhythmic, recurrent deposition of dentin matrix as well as hesitation in the daily formative process (20 microns)

    incremental lines of von Ebner or imbrication lines

  • 15

    INCREMENTAL LINES OF RETZIUS

    enamel

  • 16

    INCREMENTAL LINES OF VON EBNER

    dentin

  • 17

    MARKS THE APPOSITIONAL GROWTH OF ENAMEL AND DENTIN

    incremental lines of von Ebner or imbrication lines,

  • 18

    hypomineralization between the globules.

    INTERGLOBULAR DENTIN

  • 19

    Forms in crowns of teeth in the circumpulpal dentin j

    INTERGLOBULAR DENTIN

  • 20

    The dentinal tubules pass u n i n t e r r u p t e d l y , t h u s demonstrating a defect of mineralization & not of matrix formation

    INTERGLOBULAR DENTIN

  • 21

    Some of the incremental lines are accentuated because of disturbances in the matrix and mineralization process.

    contour lines of owen.

  • 22

    continues after tooth eruption and throughout the life of the pulp.

    dentin formation

  • 23

    begins at areas subjacent to the cusp tip or incisal ridge and gradually spreads to the apex of the root.

    dentin formation

  • 24

    yellowish elastic lower content of mineral salts - more radiolucent

    dentin

  • 25

    Inrganic matter: HYDROXYAPATITE CRYSTALS Ca10(PO4)6(OH)2

    65%

  • 26

    Organic and water percentage Form the pulp tissue Exudate. imparts elasticity to dentin

    30%

  • 27

    Organic matters and water COLLAGEN Non-collagenous Proteins GROUND SUBSTANCE: Mucopolysaccharides (proteoglycans, GAGs)

    35%

  • 28

    Unmineralized zone of dentin. The most recently formed layer of dentin is always on the pulpal surface.

    PRE DENTIN

  • 29

    This unmineralized zone of dentin is immediately next to the cell bodies of odontoblasts

    PRE DENTIN

  • 30

    Composed primarily of collagen fibers and water.

    PRE DENTIN

  • 31

    Dentin forming the initial shape of the tooth

    PRIMARY DENTIN

  • 32

    Usually completed after 3 years after tooth erruption.

    PRIMARY DENTIN

  • 33

    represents all the dentin that is formed before the completion of root formation

    PRIMARY DENTIN

  • 34

    first formed dentin in the crown underlying the dentinoenamel junction. outer or most peripheral part of the primary dentin & is about 20um thick.

    MANTLE DENTIN

  • 35

    forms the remaining primary dentin or bulk of the tooth. Represents all of the dentin formed prior to root completion. fibrils are much smaller in diameter & are more closely packed together. Slightly more mineral content than mantle dentin.

    CIRCUMPULPAL DENTIN

  • 36

    narrow band of dentin bordering the pulp and representing the dentin formed after root completion. fewer tubules

    SECONDARY DENTIN

  • 37

    Replaced by odontoblast (termed secondary odontoblast)

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 38

    Response to moderate-level irritants such as attrition, abrasion, erosion and trauma

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 39

    appears as a localized dentin on the wall surface of pulp cavity.

    REPARATIVE DENTIN/TERTIARY DENTIN

  • 40

    small canals that extend through the entire width of dentin, from the pulp to the DEJ

    dentinal tubules

  • 41

    opened and widened by acid application

    tubule apertures

  • 42

    It is the cytoplasmic cell process (Tomes fiber) of an odontoblast.

    Odontoblastic process

  • 43

    cell bodies of odontoblasts are in the pulp near the dentin- pulp border

    Odontoblastic process

  • 44

    the dental lymph or fluid of dentin transudate of extracellular fluid, mainly cytoplasm of odontoblastic processes, from the dental pulp via the dentinal tubules.

    Dentinal fluid

  • 45

    more highly mineralized than intertubular dentin.

    PERITUBULAR DENTIN

  • 46

    twice as thick in outer dentin (approx. 0.75um) than in inner dentin (0.4um).

    PERITUBULAR DENTIN

  • 47

    Organic matrix is lost along with mineral after decalcification.The calcified tubule wall has an inner organic lining termed the lamina limitans, high in glucosaminoglycans (GAG)

    PERITUBULAR DENTIN

  • 48

    main body of dentin.

    INTERTUBULAR DENTIN

  • 49

    located between the dentinal tubules or, more specifically, between the zones of peritubular dentin. Its organic matrix is retained after decalcification

    INTERTUBULAR DENTIN

  • 50

    About one-half of its volume is organic matrix, specifically collagen fibers. The fibrils range from 0.5 to 0.2um in diameter.

    INTERTUBULAR DENTIN

  • 51

    Can be seen radiographically into the form of radioopaque area in the s-shape tubule.

    SCLEROTIC DENTIN

  • 52

    harder, denser, less sensitive, and more protective of the pulp against subsequent irritations.

    SCLEROTIC DENTIN

  • 53

    Sclerosis resulting from aging

    PHYSIOLOGIC DENTIN SCLEROSIS

  • 54

    sclerosis resulting from a mild irritation

    REACTIVE DENTIN SCLEROSIS

  • 55

    Dentinal tubules with debris.

    Smear Plugs

  • 56

    greatly reduce permeability of cut dentin surface

    Smear layer and smear plugs

  • 57

    Thin altered surface wherever the dentin has been cut or abraded

    Smear layer

  • 58

    Few microleakage in thickness and is composed of denatured collagen, hydroxyapatite and other cutting debris

    Smear layer

  • 59

    Destruction of exposed collagen

    DENATURATION

  • 60

    in which stimuli directly effect the nerve endings in the tubules.

    Direct conduction theory

  • 61

    membrane of the odontoblast process conducts an impulse to the nerve endings in the predentin, odontoblast zone, and pulp

    Transduction theory

  • 62

    stimuli cause an inward or outward movement of fluid in the tubule, which in turn produces movement of the odontoblast and its processes.

    Fluid or hydrodynamic theory

  • 63

    Referring to the outward (exposed) porton of reactive sclerotic dentin where slow caries has destroyed formerly overlying tooth structure , leaving a hard darkened surface.

    EBURNATED DENTIN

  • 64

    It is encountered whenever odontoblast and their processes are stimulated during operative procedures

    Dentin sensitivity

  • 65

    Is primarily dependent on the remaining dentin thickness and the diameter of tubules.

    Dentin Permeability

  • 66

    is less effective barrier than is superficial dentin near the dentino enamel junction and dentinocemental junction

    Deep dentin

  • 67

    Dissolution of hydroxyapatite crystals

    demineralization

  • 68

    Caries formation is a two-step process;

    demineralization, DENATURATION

  • 69

    Dentin demineralizes at

    pH6.2.

  • 70

    remineralization of demineralized dentin relies on intergrity of collagen framework.

    CARIES REVERSAL

  • 71

    dentin softer than enamel.

    true

  • 72

    dentin is opaque or dull, less reflective to light than similar enamel which appear shiny

    true

  • 73

    in explorer tip, enamel surface provide sharper , and higher pitch sound than dentin surface

    true

  • 74

    have acidic “conditioners” that remove smear layer and partially demineralized the intertubular dentin.

    DENTIN BONDING

  • 75

    HYBRID LAYER Most dentin bonding system remove or stabilize smear layer allowing to penetrate.

    DENTIN BONDING

  • 76

    Resultant resin interdiffusion zone.

    DENTIN BONDING

  • 77

    PERITUBULAR DENTIN calcified tubule wall has an inner organic lining termed the

    lamina limitans

  • 78

    fibrils found in this zone are perpendicular to the dentinoenamel junction

    MANTLE DENTIN