Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DENT1020 > Dental Unit > Flashcards

Dental Unit Flashcards

FLASHCARDS FOR Enamel Dentino-Pulpal Complex Periodontium

1
Q

periodontium

A

tissues supporting the tooth

made up of cementum,pdl,bone all protected by gingiva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cementum

A

is a hard,avascular connective tissue that covers the root of the teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

2 MAIN forms of Cementum

and their meanings

A

Acellular for ATTACHMENT of tooth

Cellular for REPAIR of periodontal tissues

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is predominant collagen of cementum.

and its main function (3)

A

TYPE 1 collagen

also major type in pdl area

mf: is to structure the fiber bundles and anchor teeth

distribute masticatory force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

alveolar process

A

bone of jaws that contain sockets of teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

alveolar crest

A

location where cortical plate and alveolar bone meet

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is periodontal ligament?
where can it be found and its function?
thinnest around middle 3rd

A

a soft specialized connective tissue that can be found in between root covering cementum and the bone that forms socket walls

MF: Supporting teeth in sockets and allowing them to withstand masticatory force

acts as sensory receptor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

(8) cells that pdl consists of

A

Fibroblasts

ERMs

macrophages

undifferentiated mesenchymal cells

stem cells

cementoblasts

osteoblasts and osteoclast but they are functionally associated with the bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

principal fiber bundles of pdl (5)

A

alevolar crest group

horizontal group

oblique group

apical group

interradicular group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Sharpey’s fibre

A

end portions of pricpal fibre budles embedded into the cementum or bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Five groups of fibre bundles that make up gingival ligament

A 
Dentogingival group
• Alveologingival group
• Circular group
• Dentoperiosteal group
• Transseptal fibre system
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q 
Ground substance (70% water)
and function
A

amorphous background material which
binds tissues and fluids

has significant effect on the ability of a tooth to withstand stress loads

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

deep sulcus

A

periodontal pocket

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

cells responsible for enamel formation

A

ameloblasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

physical characteristics of enamel (3)

A

translucent

colour varies depending on thickness

96% inorganic material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Fundamental organizational units of enamel are

A

rods and inter rod enamel

cylindrical rods embedded
in inter rod enamel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

inter rod enamel

A

surronds each rod enamel and its crystals are orientedd in a different direction from those making up the rod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

amelogenesis

A

enamel formation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

3 stages of amelogenesis

A

inductive
secretory stage
maturation stage

20
Q

ameloblasts(3)

A

cells that make enamel

secrete matrix proteins
and
maintain a extracellular environment for mineral deposition

21
Q

what is Striae of Retzius and what they mean

in longitudinal section of a tooth

A

series
of lines made of enamel rods extending from the dentinoenamel junction towards
the tooth surface

are incremental growth lines

22
Q

neo-natal line

A

enlarged Stria of
Retzius, which apparently reflects the great physiologic
changes occurring at birth

23
Q

Hunter-Schreger bands

A

changes in direction between adjacent groups of rods

bands appear as dark and light alternating zones

24
Q

gnarled

enamel

A

over cusp tips

make rods appear twisted around each other

25
Q

Enamel tufts

A

project for a short distance into enamel from the dej

appear to be branched

contain lots of enamel proteins

26
Q

enamel lamellae

A

extending depth varies

cracks in enamel

27
Q

dentinoenamel junction

A

crystals of dentine and enamel intermix

28
Q

amelogenesis imperfecta

3 dif classifications

A

a group of inhereted defects

hypoplastic
hypocalcified
hypomature

29
Q

amelogeensis defects

A

febrile diseases

tetracycline induced disturbances

excess fluoride ion concentrations of 5ppm

30
Q

dentine

A

hard tissue portion of the pulp-dentine complex,
and forms the bulk of the tooth.

harder than bone softer than enamel

70% inorganic materail

31
Q

odontontoblasts

A

form and maintain dentine

cell on the outerwall of dental pulps

32
Q

dental pulp

A

soft connective tissue that occupies the
cen
tral portion of the tooth

33
Q

apical foramen

A

meeting place of pulp and pdl

main nerves and vessels enter and leave here

34
Q

3 dif stages of dentine formation after differentiation (3)

A

mantle

primary

secondary

tertiary

35
Q

Dentinogenesis

A

formation of dentine done by odonto blasts

begins at the late bell stage

36
Q

tertiary dentine

A

ONLY produced by cells directley affected by stimlus

37
Q

sub classifications of tertiary dentine

and their functions

A

REACTIONARY dentine deposited by exsisiting odontoblasts

REPARATIVE dentine depostied by newly differentiated odontoblast-like cells

38
Q

scelerotic dentine

A

appears
when tubules which have become
filled with calcified material.

39
Q

dentinogenesis imperfecta

A

hereditary condition characterized by abnormal dentine formation

40
Q

dental pulp

A

soft connective tissue that supports dentine

41
Q

4 histological zones of dental pulp and location

A

the odontoblastic zone at the pulp periphery

cell free zone of weil below odontoblasts

cell rich zone has high density

pulp core contains many vessels and nerves

42
Q

which cells make pulp and what to they form

A

fibroblasts

and they are numerous in coronal pulp and form cell-rich zone

43
Q

plexus of

nerves in the cell-free zone of Weil in the crown of the tooth

A

subodontoblastic plexus of Raschkow

44
Q

hydrodynamic theory

A

fluid movement
through the tubule distorts the local pulpal environment, and
is sensed by the free nerve endings in the plexus of Raschkow

45
Q

4 classic functions of pulp

A

Formative: Produces the dentine that surrounds it.
• Nutritive: Nourishes the avascular dentine.
• Protective: Carries nerves that give dentine its sensitivity.
• Reparative: Capable of producing new dentine as required.

DENT1020 (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions