Finals Examination LECTURE Flashcards
(88 cards)
1
Q
Bone adjacent to periodontal ligament
A
Bundle Bone
2
Q
Most Abundant Periodontal fiber ligament
A
Oblique Fibers
3
Q
Most collagen synthesis occurs inside
A
Fibroblasts
4
Q
Which of the these groups is not attached to the alveolar bone
A
Transseptal Fibers
5
Q
Principal periodontal fibers are attached to the
A
Bundle Bone
6
Q
Sharpey’s fibers are derived from
A
Dental Follicle
7
Q
Periodontal fibers seen from cementum of one tooth to another cementum surface of another
A
Transseptal Fibers
8
Q
Location of Cementicles
A
Periodontal Ligament
9
Q
Rests of Malassez found in the periodontal ligament are derived from
A
Odontogenic Epithelium
10
Q
Initiates development of supporting tissues of the tooth
A
Dental Follicle
11
Q
Interglobular spaces
A
Are formed during the course of globular mineralization
12
Q
A major difference between secondary and primary dentin is
A
there is less dentinal tubules with secondary dentin
13
Q
Cementum is continuously secreted depending on the vitality of cementum (true or false)
A
False
14
Q
Which is true of the following
A
The physiological secondary dentin contain dentinal tubules
15
Q
Amelogenesis and dentinogenesis are similar in which respect
A
Both processes involve maturation with hydroxyappatite crystals
16
Q
Cementum deposition cervically on enamel surface is due to
A
premature degeneration of epithelial root sheath of Hertwig
17
Q
Age changes will increase
A
in cementum thickness
18
Q
Which among the following is not true about Junctional epithelium
A
terminal end of gingival sulcus
19
Q
Stippling disappears in
A
geriatrics
20
Q
Alveolar bone is that part of maxilla and mandible that surrounds and supports the tooth (True or False)
A
True
21
Q
Gingival epithelium in most cases is
A
parakeratinized
22
Q
Under reduced occlusal forces, the periodontal ligament appears thin, the PDL fibers reduce in number and density, the number and thickness of the alveolar bone trabeculae are reduced. What is this phenomenon termed
A
Attrophy
23
Q
Concrescence is:
A
A union of root structure of two or more teeth through cementum only
24
Q
What structure is formed in the crown first
A
Dentin
25
No basal lamina is found between the cells of the
stratum intermedium and inner dental epithelium
26
The epithelial root sheath of Hertwig disintegrates:
After odontoblastic differentiation & dentin matrix deposition
27
A layer of cells that seems to be essential to enamel formation but does not actually secrete the enamel is
Stratum intermedium
28
The stimulus that initiates the actual formation of enamel matrix seems to be
Presence of predentin
29
The number of roots that are formed is determined by the
Number of medial ingrowths at the epithelial diaphragm
30
Odontoblasts start their secretory activity:
Before enamel matrix production
31
Apposition stage is confined to
Bell Stage
32
The process of differentiation of mesenchymal cells into odontoblasts is called
Induction
33
Epithelial rests of Malassez are
Epithelial remnants of the epithelial root sheath of Hertwig only
Network or isolated islands in the P.L. only
Epithelial strands and may undergo degeneration only
34
If Hertwig's epithelial root sheath does not disintegrate
No cementum will be formed on the radicular dentin
35
which of the following is not component of the dental organ
Odontoblasts
36
Which of the following is associated with an erupted tooth?
Epithelial rests of Malassez
37
Which of the following contain blood vessels?
Dental Sac
38
The development of the root begins when
The inner and outer dental epithelium reaching the future C.E.J
39
The apposition stage of tooth development begins
When the first layer of dentine is deposited
40
dental pulp, except
highly vascularized part of the periodontium
41
In a developing tooth, if Hertwig's sheath and the epithelial diaphragm failed to form, the resulting tooth would exhibit:
No radicular dentin
42
A 20 year old man falls down and chips the incisal edge of his maxillary central incisor, reducing the length of the crown. A dentist informs him that the tooth may erupt a little to compensate for the loss. This tooth movement is likely to result in increase in size of which of the following dental tissues?
Cementum
43
A 20 year old man falls down and chips the incisal edge of his maxillary central incisor, reducing the length of the crown. A dentist informs him that the tooth may erupt a little to compensate for the loss. This tooth movement is
Passive Eruption
44
A 20 year old man falls down and chips the incisal edge of his maxillary central incisor, reducing the length of the crown. A dentist informs him that the tooth may erupt a little to compensate for the loss.
This tooth movement involves the traction force of periodontal ligament.
(True or False)
False
45
A patient complains of loss of taste, and a numb sensation in the left half of his tongue, after removal of his left lower wisdom tooth. Which of the following nerves is most likely to have been injured during removal of this tooth?
Lingual Nerve
46
A deep carious lesion in a tooth reaches the pulp. The pulp responds by vasodilatation. There is migration of white blood cells into the pulp. This response is most likely to be initiated by what cells ?
Lymphocytes
47
A deep carious lesion in a tooth reaches the pulp and causes so much pain. Which response of the pulp is appropriate with the description.
Inflammatory Response
48
A deep carious lesion in a tooth reaches the pulp causing sharp pain. What nerves might be active with this pain?
Alpha Fibers
49
Tooth 46 is infected (with abscess). Which is the nearest drainage of waste materials/ infection?
Submandibular Lymph Nodes
50
A 13 year old boy presents to his general dental practitioner with a broken upper incisor tooth of one day duration. He complains of pain in the tooth when drinking cold water. On examination the enamel of the incisal edge has been chipped off, and the underlying dentin exposed. Which of the following contents of the dentinal tubule is most likely to be responsible for the pain felt by the patient?
Odontoblastic Process
51
Which of the following types of dentin is continuously produced throughout life?
Circumpulpal Dentin
52
Which is most likely to be destroyed first by caries when gingiva is receeded?
Cementum
53
During cavity preparation a dentist drills deeply into a tooth and exposes the pulp chamber. The dentist covers the exposed pulp issue with a calcium hydroxide cement, and reassures the patient. Which of the following cells of the pulp are most likely to be responsible for healing and repair in this area?
Odontoblasts
54
Most principal fibers of the periodontal ligament insert into
Cementum
55
During orthodontic treatment, movement of the tooth is achievable by resorption and formation. Which dental tissue actively is involved in this circumstance
alveolar bone
56
Cementoid contains collagen fibers. (TRUE OR FALSE)
True
57
Sharpey's fibers, except:
are responsible for tooth stability
58
Gingival massage through tooth brushing increases the circulation of blood in gingival vessels in the
Lamina Propria
59
All of the following structures may be found in oral mucous membrane except
muscularis mucosae
60
gingiva is only present in the presence of tooth (True or False)
True
61
Cementocytes arise when
cementoblasts are entrapped by cementoid
62
Pain originates in the pulp due to
free nerve endings in the vicinity of the odontoblastic cells
63
pain in the periodontium is felt because of
Proprioceptive nerve endings
64
The papillae not containing taste buds
filiform papillae
65
Pick the correct series that lists the parts of the mature tooth in the order of increasing inorganic content.
pulp, cementum, dentin, enamel
66
Most calcified periodontium structure
Cementum
67
For extrusion movement (movement out of alveolar socket), what periodontal ligament opposes this movement
Apical Fibers
68
Which feature of cellular cementum best differentiates it from acellular cementum?
Lacunae
69
In mature dental tissues, the only tissue whose cells are lost is
enamel
70
which of the following is not part of the group
a. cribriform plate
b. cortical bone
c. alveolar bone proper
d. bundle bone
Cortical Bone
71
At least half of the nerve fibers found in human teeth are______slow conducting __________fibers
unmyelinated, D fibers
72
the dental pulp contains nerve endings for
Temperature
73
functions of dental pulp except:
-sends impulses to CNS
-nerve supply to enamel through fibers
-nerve supply to dentin
-formation of dentin
nerve supply to enamel through fibers
74
the radicular pulp is continuous with periodontium area through
apical foramen
75
Weil’s zone is
cell free zone
76
pulp stones are found, except
-along dentinal walls
-in aged tooth
-in the apical foramen
-along canal orifice
in the apical foramen
77
aging process affects pulp tissue by:
decreasing the shape and size of pulp tissue and cellular component
78
fibers of the gingiva usually provides support to the
all
79
connects free and attached gingiva
valley like depression found in the distal and mesial of adjacent tooth
80
The trajectory pattern is less prominent in the maxilla because of the proximity of the maxillary sinus and nasal cavity. (TRUE OR FALSE)
True
81
Neurovascular bundle serves to direct blood flow away from the capillaries. (true or false)
False
82
Lines of salter marks the difference in the degree of matrix calcification resulting in the bonding of the dentin. (true or false)
False
83
Interglobular dentin is a defect of dentinal matrix formation (true or false)
False
84
cheeks arises from oral vestibule (true or false)
False
85
Vitality of the pulp depends on the presence of odontoblast. (true or false)
False
86
Vitality of the periodontal ligament depends on the cementum (true or false)
False
87
Prickle cells are connected by intercellular ridges (True or false)
True
88
Salivary glands of oral cavity are mixed in their secretions (True or False)
True
