Pulp-1

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