Which of the following is incorrect?
Primary cementum is formed before eruption
Secondary cementum is formed after eruption
Coronal cementum is seen in newly erupted teeth
Cellular fibrillar cementum comes first
Acellular, afibrillar cementum can be found on the enamel surface
What are the functions of Hertwig's Epithelial Root Sheath?
Determine root morphology
Release inductive factor
Synthesis of intermediate cementum
Inductive factor and odontoblast differentiation
All of the above
Which of the following is false?
Cellular fibrillar cementum can form over acellular cementum especially in apical portions of the root
Acellular fibrillar cementum is deposited against mantle dentin
Linear mineralization is controlled by cementoblasts
Cementum resorption can be pathological or physiological
Cementum deposition occurs throughout life
Intermediate cementum contains collagen type 4. Its origin is the ectomesenchyme.
T/T
T/F
F/T
F/F
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
Cell processes of the cementocyte are projected towards the PDL. Cellular, fibrillar cementum can be found at root apices.
Which is the most common relationship of the CEJ?
Cementum overlaps the enamel
But joint of cementum and enamel
Enamel overlaps the cementum
Gap between enamel and cementum
The most common site for enamel projections is on the maxillary central incisors. They are caused by a failure of HERS formation.
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
Enamel projections are often found on the labial side of lateral maxillary incisors
Which of the following would NOT be found in the interfibrillar matrix of cementum?
osteocalcin
osteonectin
sialoprotein
fibronectin
hydroxyapatite
