Resto Flashcards by btp_

Ameloblasts have short extensions toward the dentinoenamel junction

Tomes process

How well did you know this?

Not at all

Perfectly

Most mineralized and hardest substance of body

Enamel

How well did you know this?

Not at all

Perfectly

Enamel is mainly composed of millions of

enamel rods or prisms

How well did you know this?

Not at all

Perfectly

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

Perikymata groove striae of retzius

How well did you know this?

Not at all

Perfectly

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

Striae of retzius

How well did you know this?

Not at all

Perfectly

Formed from changes in diameter of tomes process

Striae of retzius

How well did you know this?

Not at all

Perfectly

When retzius circle are incomplete;

Perikymata, pickerill lines

How well did you know this?

Not at all

Perfectly

Enamel lamella özellik

Leaflike, found pits, contain organik mat

How well did you know this?

Not at all

Perfectly

İmperfect calcification of enamel

Lamella

How well did you know this?

Not at all

Perfectly

Types of lamella are seen

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

How well did you know this?

Not at all

Perfectly

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

Neonatal lines

How well did you know this?

Not at all

Perfectly

Nasmyth memb diğer ad
Zamanla yerini ne alır

Primary enamel cuticle.
Pellicle = precurser to bacterial plaque

How well did you know this?

Not at all

Perfectly

From dej to enamel
From enamel to dej

Enamel tufts
Enamel lamella

How well did you know this?

Not at all

Perfectly

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

Enamel spindles

How well did you know this?

Not at all

Perfectly

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

Gnarled enamel =resistent to cutting

How well did you know this?

Not at all

Perfectly

Compressive,tensile, yieşd strength kıyasla enamel dentin

Mine’nin tensili daha fazla denetinin compressivi

How well did you know this?

Not at all

Perfectly

Odontoblasts long cytoplasmic processes

Tomes fibers

How well did you know this?

Not at all

Perfectly

Dentinal tubules lateral branches

Microtubul and canaliculu

How well did you know this?

Not at all

Perfectly

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

Owen Line(von ebner fibers)

How well did you know this?

Not at all

Perfectly

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

Owen von ebner
2.von corff fibers

How well did you know this?

Not at all

Perfectly

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

Czermak spaces= ınterglobular dentin

How well did you know this?

Not at all

Perfectly

There is a zone adjacent to cementum, less calcified

Tomes Granular Layer cej den root apexine doğru artar

How well did you know this?

Not at all

Perfectly

First formed dentin

Predentin

How well did you know this?

Not at all

Perfectly

Unmineralized zone of dentin NeXT to odontoblasts

Predentin

How well did you know this?

Not at all

Perfectly

Initial Shape of dentin

Primary dentin

Dentins that formed after root completion

Secondary and tertiary dentin

Dentin tubule numbers are. Higher in pulp than dej

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

Retzius line, striae of retzius

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

Lamella, tufts Mantle dentinin altındaki circumpulpal dentinde

Interglobular is in crown İf it is in root=

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

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

Peritübüler dentin intertübülerden daha mineralzie

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

In Superficial dentin =96 intertubuler 3 peritubular 1 water Deep= 12inter 66 peri 22 water (hard to obtain proper adhesion)

İnitial mineralization of newly differentiated odontoblasts

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

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

dead tracts

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

Neden pulpa volumü yaşlandıkça azalır

Seconder dentin artışından

Odontoblasts mitoz yapmaz ,sensitivitye neden olur

Greatest number cells in pulp=

Fibroblast(cell rich Layer)

Kolajen ve ground substance salgılayan pulpadaki hücre nedir

Fibroblast

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

Fibroblast

Structureless Mass with gel like consistincy forming bulk of pulp=

Ground substance

Ground sub.ın içeriği.

Glycosaminoglycans, glycoproteins, water

Branches of nerves near to odontoblast Layer=

Raschknow plexus miyelin nöronlar miyelinini kaybedip oluşturur

Sadece molar dişlerde canal orifice görülür

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

Spindle

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

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

Cementoid

Calcified bodies in pdl or cementum

Cemenicles

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

Excessive orthodonticforce Occlusal pressure

Cementum is softer than dentin enamel. Apekste cement daha kalın

Cementum doesnt undergo reposition remodeling, only deposition

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

Junction between dentin and cement

İntermediate cement

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

Pulpa volume ü yaşlandıkça neden azalır

Due to increase in Secondary dentin deposition

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

Dentin has high compressive strength than enamel

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

It contains greater concentration of enamel Proteins

Enamel tufts

irregular enamel that is more resistant to cleavage called

Gnarled enamel

İnterrod substance between grups of enamel rods

Enamel tufts

hypermineralized zone of enamel

DEJ

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

Occlusal pit and fissures

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

Enamel tufts

Functions of Enamel

• 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.

Clinical Significance of Enamel Color:

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

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.

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

Preperasyonds dentin enamelden nasıl ayrılır

Color reflectance hardnes ssound -cerrahsın

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

Intertubular dentin determines the elasticity of the dental matrix.

Tomes granular layer increases from CEJ to root apex

Tertiary dentin özellikleri

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

Functions of dentin

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

What is sclerotic dentin

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

Eburnated dentin:

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

Stellate retikulum:

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

Between stellate reticulum and inner enamel epithelium

Stratum intermedium

Epithelial band two processes=

vestibular lamina dental lamina

Resto Flashcards

(80 cards)