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Fizy. > Resto > Flashcards

Resto Flashcards

1
Q

Ameloblasts have short extensions toward the dentinoenamel junction

A

Tomes process

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2
Q

Most mineralized and hardest substance of body

A

Enamel

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3
Q

Enamel is mainly composed of millions of

A

enamel rods or prisms

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4
Q

Series of grooves or fine ridges seen on
enamel surface where the striae emerge onto enamel surface

A

Perikymata groove striae of retzius

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5
Q

Brownish band. Growth circles. Similar to annual rings in tree

A

Striae of retzius

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6
Q

Formed from changes in diameter of tomes process

A

Striae of retzius

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7
Q

When retzius circle are incomplete;

A

Perikymata, pickerill lines

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8
Q

Enamel lamella özellik

A

Leaflike, found pits, contain organik mat

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9
Q

İmperfect calcification of enamel

A

Lamella

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10
Q

Types of lamella are seen

A

Type A poorly calcified rod segments
Type B degenerated cells

Type C after eruption where the crack is filled with mucoproteins

A minede B-C dentin

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11
Q

Used in forensic dentistry be used to distinguish matters such as
a child died before or after birth

A

Neonatal lines

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12
Q

Nasmyth memb diğer ad
Zamanla yerini ne alır

A

Primary enamel cuticle.
Pellicle = precurser to bacterial plaque

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13
Q

From dej to enamel
From enamel to dej

A

Enamel tufts
Enamel lamella

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14
Q

serve as pain receptors, explaining the enamel sensitivity
experienced by some patients during tooth preparation.

A

Enamel spindles

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15
Q

present mostly in cervical, incisal portion. This consists of bundles of enamel rods which interwine in an irregular manner, finally taking a twisted and
irregular path

A

Gnarled enamel =resistent to cutting

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16
Q

Compressive,tensile, yieşd strength kıyasla enamel dentin

A

Mine’nin tensili daha fazla denetinin compressivi

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17
Q

Odontoblasts long cytoplasmic processes

A

Tomes fibers

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18
Q

Dentinal tubules lateral branches

A

Microtubul and canaliculu

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19
Q

Odontoblasts pauses during dentine production and line occurs at that time=

A

Owen Line(von ebner fibers)

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20
Q

Odontoblasts durunca oluşan lines
If this lines extend perpendicular =
Extend parallel=

A

Owen von ebner
2.von corff fibers

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21
Q

less calcified areas remain between the spheres. This results in zones of hypomineralization= below mantle dentin

A

Czermak spaces= ınterglobular dentin

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22
Q

There is a zone adjacent to cementum, less calcified

A

Tomes Granular Layer cej den root apexine doğru artar

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23
Q

First formed dentin

A

Predentin

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24
Q

Unmineralized zone of dentin NeXT to odontoblasts

A

Predentin

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25
Q

Initial Shape of dentin

A

Primary dentin

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26
Q

Dentins that formed after root completion

A

Secondary and tertiary dentin

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27
Q

Dentin tubule numbers are. Higher in pulp than dej

A
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28
Q

Owen linenın enameldeki ismi
Ameloblasts pauses during enamel production and line ocuurs

A

Retzius line, striae of retzius

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29
Q

Czermak spaces (interglobular) enameldeki adı
Czermak s. Nerede bulunur

A

Lamella, tufts
Mantle dentinin altındaki circumpulpal dentinde

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30
Q

Interglobular is in crown
İf it is in root=

A

Tomes Granular Layer= adjacent to cementum,Less calcified
Cejden roota doğru miktarı artar

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31
Q

Dentin-predentin-odontoblast-cell poor Layer- cell rich Layer

A
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32
Q

Peritübüler dentin intertübülerden daha mineralzie

A
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33
Q

Intertubuler dentin determines the elasticity of dental matrix. Superficial-deep oran

A

In Superficial dentin =96 intertubuler 3 peritubular 1 water

Deep= 12inter 66 peri 22 water (hard to obtain proper adhesion)

34
Q

İnitial mineralization of newly differentiated odontoblasts

A

Mantle dentin
Initial shape primary d. Primary dentin içinde mantle ve circumpulpal yer alır

35
Q

0dontoblast process ler
ölmesi Sonucu tübüllerde
ara ara ölü alanlar gözükür=

A

dead tracts

36
Q

Odontoblasts sayısı coronal dentinden root dentine gidildikçe azalır
Apekse doğru odontoblast sayısı azalır

A
37
Q

Neden pulpa volumü yaşlandıkça azalır

A

Seconder dentin artışından

38
Q

Odontoblasts mitoz yapmaz ,sensitivitye neden olur

A
39
Q

Greatest number cells in pulp=

A

Fibroblast(cell rich Layer)

40
Q

Kolajen ve ground substance salgılayan pulpadaki hücre nedir

A

Fibroblast

41
Q

Which health status of cells show the age, vitality and strength of the pulp to
withstand irritant effects.

A

Fibroblast

42
Q

Structureless Mass with gel like consistincy forming bulk of pulp=

A

Ground substance

43
Q

Ground sub.ın içeriği.

A

Glycosaminoglycans, glycoproteins, water

44
Q

Branches of nerves near to odontoblast Layer=

A

Raschknow plexus miyelin nöronlar miyelinini kaybedip oluşturur

45
Q

Sadece molar dişlerde canal orifice görülür

A
46
Q

Odontogenesis sırasında odontoblast uzantılarının(Tomes lifleri) mine-dentin sınırında sona ermeyip mine içine doğru kısa uzantılar şeklinde ilerlemelerinden ve kör olarak sonlanmalarından oluşurlar.; koyu renkli görünürler ve mine dokusu içinde kısa bir seyir takibeden ince yapılardır.

kavite açılması sırasında ağrı reseptörleri gibi fonksiyon görür

A

Spindle

47
Q

İt belongs to growth lines in enamel known as striae of retzius

A
48
Q

The cement thickens with the addition of new layers throughout life.

Premineralized noncalcified cementum

A

Cementoid

49
Q

Calcified bodies in pdl or cementum

A

Cemenicles

50
Q

as a result of calcification of the parts where the periodontal fibrils enter cement=
Sharp shape fibers olur nedenler

A

Excessive orthodonticforce
Occlusal pressure

51
Q

Cementum is softer than dentin enamel. Apekste cement daha kalın

A
52
Q

Cementum doesnt undergo reposition remodeling, only deposition

A
53
Q

Cellular C.*Less calcified than cell-free cement
Cellular cem is thick and irregular

A
54
Q

Junction between dentin and cement

A

İntermediate cement

55
Q

In the crown, the cell bodies of odontoblasts
are columnar whereas in the midportion of
the pulp, they are more cuboid and in apical part, more flattened.
Pressure

A
56
Q

Pulpa volume ü yaşlandıkça neden azalır

A

Due to increase in Secondary dentin deposition

57
Q

Enamel is a brittle structure. It has LOW tensile strength HIGH elastic modulus bu da rigid olduğunu gösterir

A
58
Q

Dentin has high compressive strength than enamel

A
59
Q

. The diameter of rods increases from dentino-enamel junction
towards the outer surface of enamel in a ratio of 1: 2.

A
60
Q

It contains greater concentration of enamel
Proteins

A

Enamel tufts

61
Q

irregular enamel that is more resistant to cleavage called

A

Gnarled enamel

62
Q

İnterrod substance between grups of enamel rods

A

Enamel tufts

63
Q

hypermineralized zone of enamel

A

DEJ

64
Q

During the development of a tooth, sound faulty coalescence of the lobes results in_____________?

A

Occlusal pit and fissures

65
Q

Greater concenntration of enamel proteins . İnterrod substance. Spread of dental infection

A

Enamel tufts

66
Q

Functions of Enamel

A

• It is hardest structure of tooth which supports masticatory forces
-It is responsible for color, esthetics, surface texture and translucency of the tooth
-It supports the underlying dentin and pulp.

67
Q

Clinical Significance of Enamel Color:

A

Color of the enamel varies because of following factors:
Age
-antibiotic usage
Ingestion of fluoride
-Extrinsic stains
Developmental defects of tooth.

68
Q

Hardness of dentin near dej three times greater than near the pulp. Dentin becomes harder with age, as a result of increases in mineral content.

A
69
Q

Dentin is not as prone to cleavage as is the enamel rod structure.

A
70
Q

Preperasyonds dentin enamelden nasıl ayrılır

A

Color reflectance hardnes ssound -cerrahsın

71
Q

When moving an explorer tine over the tooth, enamel surfaces
provide higher-pitched sound than dentin. Because hardness of dentin is one-fifth that of enamel

A
72
Q

Intertubular dentin determines the elasticity of the dental matrix.

A
73
Q

Tomes granular layer increases from CEJ to root apex

A
74
Q

Tertiary dentin özellikleri

A

Atubular,şrregular, mesenchymal cells produce odontoblast that produce reperative dentin, less permeable, for protecting pulp tissue

75
Q

Functions of dentin

A

strength to the tooth
protection of pulp
* flexibility to the tooth
Color of enamel
-initiating pulpal defence mechanism

76
Q

What is sclerotic dentin

A

It occurs due to aging(fizyolojik sd) or chronic and mild irritation (reaktif sd )
Peritubular dentin is wider,
This area harder less sensitive

77
Q

Eburnated dentin:

A

It is type of reactive sclerotic dentin
-due to destruction by slow caries process or irritation and
-results in hard, darkened cleanable surface

78
Q

Stellate retikulum:

A

Mine organını dolduran hücreler. Provide turgor and support to enamel.

79
Q

Between stellate reticulum and inner enamel epithelium

A

Stratum intermedium

80
Q

Epithelial band two processes=

A

vestibular lamina
dental lamina

Fizy. (7 decks)

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