|
No.
|
Question
|
Answer
|
|
1
|
Shovel shaped coronal pulp is encountered with
|
Maxillary central incisor.
Maxillary lateral incisor has a coronal pulp that is
spoon shaped. |
|
2
|
The total volume of pulp in permanent dentition is
|
0.38 cc.
It is 0.006 cc in mandibular central incisor and
0.068cc in maxillary first molar. |
|
3
|
The smallest pulp chamber in size in permanent
dentition is in |
Mandibular lateral incisor.
In terms of volume it is mandibular central incisor.
|
|
4
|
The average size of the apical foramen of the
maxillary teeth in the adult is |
0.4 Millimeter.
|
|
5
|
In mandibular teeth the average size of the apical
foramen is |
Smaller than maxillary teeth
|
|
6
|
The average size of the apical foramen of the
mandibular teeth in the adult is |
0.3 Millimeter
|
|
7
|
Accessory canals are more frequently seen in
|
Apical third of root
|
|
8
|
The most likely reasons for formation of accessory
canals is that the |
Persistence of epithelial diaphragm; Late
disappearance of root sheath cells; Hypertrophy of root sheath cells; Premature loss of root sheath cells; The developing roots is obstructed by a small blood vessel, the root forms around the vessel creating an accessory canal. |
|
9
|
The Weil’s zone is a space where the
|
Odontoblasts move pulpward
|
|
10
|
Weil’s zone is inconspicuous during
|
Early dentinogenesis.
Because at this stage there is a very rapid and
odontoblast migration is greatest at this time. |
|
11
|
The cell rich zone is rich in
|
Fibroblasts.
It is principally made up of fibroblast and
undifferentiated mesenchymal cells. |
|
12
|
The undifferentiated mesenchymal cells in dental
pulp lack |
Rough endoplasmic reticulum.
This organelle is found only in cells that are
synthesizing proteins. As these cells are in a stage of suspended animation, they lack it. |
|
13
|
The intercellular substance is composed of
|
Acid mucopolysaccharides; Glycosaminoglycans;
Proteoglycans |
|
14
|
The intercellular substance of pulp serves
|
As a support; As a means of transport of nutrition;
As a means of transport of metabolite from cells |
|
15
|
The most numerous cells of the dental pulp are
|
Fibroblasts
|
|
16
|
In the course of development the dental pulp
contains |
Fewer cells & more fibers
|
|
17
|
The collagen fibers in pulp show cross striations at
|
64 nanometers
|
|
18
|
In the very young pulp the primary cells are
|
Undifferentiated mesenchymal cells
|
|
19
|
The second most prominent cell in the mature pulp is
|
Odontoblasts
|
|
20
|
The odontogenic zone of pulp is filled by
|
Odontoblasts
|
|
21
|
Tryphan blue is an intra vital dye used to disclose
which cell |
Fibroblast
|
|
22
|
The cell with a cart wheel appearance of nucleus is
the |
Plasma cell.
The chromatin of the nucleus is adherent to the
nuclear membrane that give the nucleus this appearance. |
|
23
|
The pulp organ is supplied by artery arising from
|
Superior/ Inferior alveolar arteries
|
|
24
|
The largest arteries in human pulp are
|
50 to 100 micrometers
|
|
25
|
The flow of blood in pulp arterioles is
|
0.3 to 1 millimeter / second
|
|
26
|
The flow of blood in pulp capillaries is
|
0.08 millimeter / second. In venules it is
0.15mm/sec |
|
27
|
Pericytes are fibroblasts associated with
|
Capillaries. Also called as Rougert cells.
|
|
28
|
The largest veins in human pulp are
|
100 to 150 micrometers
|
|
29
|
Lymph vessels draining the anterior teeth pass to
the |
Submental lymph nodes
|
|
30
|
Lymph vessels draining the posterior teeth pass to
the |
Submandibular
and deep cervical lymph nodes |
|
31
|
The plexus of Rashkow is located adjacent to the
|
Cell rich zone
|
|
32
|
The primary pulp functions for an average length of
time which is |
8.3 years.
The primary pulp organ growth is 11.85 months, pulp
maturation is 45.3 months, and pulp regression is 42 months. |
|
33
|
The maximum life of primary pulp function is
|
9.6 years
|
|
34
|
In aging pulp more often, the fiber bundles appear
arranged |
Longitudinally in the radicular pulp & randomly
in the coronal pulp |
|
35
|
True denticles are rare & are located
|
Close to the apical foramen
|
|
36
|
The most common location of diffuse calcifications
are seen |
In the radicular pulp
|
|
37
|
The tissue is designated as pulp only after
|
Dentin is formed
|
|
38
|
At location of future incisor the development of
the dental pulp begins at about |
8th week of embryonic life
|
|
39
|
The dental papilla is a highly vascular condensation
of |
Undifferentiated ectomesenchymal cells
|
|
40
|
Pulp is an ectomesenchymal tissue which arises from
|
Dental papilla
|
|
41
|
Test results of vitalometers are used to interpret
the |
Sensitivity of pulp
|
|
42
|
Macrophages found in pulp are found in the
|
Center of pulp
|
|
43
|
The greatest concentration of collagen in pulp is
generally seen in |
Radical pulp.
This explains the fact that when root canal
treatment is done, broach extending till apex will help in removal of the total pulp. If it is extended only till the crown where it is gelatinous and soft, it is liable to tear. |
|
44
|
The predominant collagen in pulp is
|
Type I collagen. The Type I Type III is 55 45. Traces of type VII are also seen and in
Basement membrane, type IV is seen. |
|
45
|
“Wheat sheafing” is a term used to describe clumping
of odontoblasts due to |
Inadequate fixation
|
Prof. Rooban Thavarajah
Oral and Maxillofacial Pathologist
List