5309221
Question 1
Question
Which of the following is incorrect?
Answer
-
Primary cementum is formed before eruption
-
Secondary cementum is formed after eruption
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Coronal cementum is seen in newly erupted teeth
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Cellular fibrillar cementum comes first
-
Acellular, afibrillar cementum can be found on the enamel surface
Question 2
Question
What are the functions of Hertwig's Epithelial Root Sheath?
Answer
-
Determine root morphology
-
Release inductive factor
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Synthesis of intermediate cementum
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Inductive factor and odontoblast differentiation
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All of the above
Question 3
Question
Which of the following is false?
Answer
-
Cellular fibrillar cementum can form over acellular cementum especially in apical portions of the root
-
Acellular fibrillar cementum is deposited against mantle dentin
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Linear mineralization is controlled by cementoblasts
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Cementum resorption can be pathological or physiological
-
Cementum deposition occurs throughout life
Question 4
Question
Intermediate cementum contains collagen type 4. Its origin is the ectomesenchyme.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 5
Question
Which of the following is false?
Answer
-
Amelogenin is expressed on root surface
-
Intermediate cementum isn't really cementum
-
Intermediate cementum contains both collagen type 4 and amelogenins
-
Intermediate cementum descends from epithelial cells, not mesenchymal cells
-
None of the above
Question 6
Question
Cell processes of the cementocyte are projected towards the PDL. Cellular, fibrillar cementum can be found at root apices.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 7
Question
Which is the most common relationship of the CEJ?
Answer
-
Cementum overlaps the enamel
-
But joint of cementum and enamel
-
Enamel overlaps the cementum
-
Gap between enamel and cementum
Question 8
Question
The most common site for enamel projections is on the maxillary central incisors. They are caused by a failure of HERS formation.
Answer
-
T/T
-
T/F
-
F/T
-
F/F
Question 9
Question
Which of the following is incorrect?
Answer
-
Cementicles are likely from reactivation of cell rests of Malassez
-
Enamel pearls are often on root furcations
-
Enamel projections are often on root furcations
-
Hypercementosis is frequently seen in the elderly
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Enamel projections are often found on the labial side of lateral maxillary incisors
Question 10
Question
Which of the following would NOT be found in the interfibrillar matrix of cementum?
Answer
-
osteocalcin
-
osteonectin
-
sialoprotein
-
fibronectin
-
hydroxyapatite
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