A. Forms during root formation
B. Forms after the eruption of the tooth
C. Seen at the coronal portion of the tooth
D. Formation is a slow process
A. Twisted
B. Curved
C. Pulp chamber
D. Lateral canal
A. Highly defined cellular zone near cemento – dentinal junction (CDJ)
B. Highly defined fibrillar zone near CDJ
C. Poorly defined zone near cemento-dentinal junction
D. Both a and B
A. 45 to 50%
B. 50 to 55%
C. 55 to 60%
D. 60 to 65%
A. Middle
B. Coronal
C. Apical
D. Interradicular
A. Cementum is thinnest at CEJ (20-50μm)
B. Cementum is thickest towards the apex (150-200μm)
C. The apical foramen is surrounded by cementum
D. All of the above
A. Anatomic repair
B. Functional repair
C. Physiological repair
D. Hyperplasia
A. Between enamel and cementum
B. Found at dentinocemental junction
C. Apical third
D. Coronal third
A. Cementum is more resistant to resorption than bone
B. Bone is more resistant to resorption than cementum
C. Both are equally resorbable
D. None of the above
A. Ankylosis
B. Resorption of cementum
C. Hypertrophy of cementum
D. Hyperplasia of cementum