Dentinal tubules are calcified in_______________?
A. Sclerotic dentin
B. Primary dentin
C. Secondary dentin
D. Interglobular dentin
Dentin
Accentuated incremental lines in dentin due to disturbances in matrix and mineralization process is_____________?
Accentuated incremental lines in dentin due to disturbances in matrix and mineralization process is_____________?
A. Incremental lines of retzius
B. Incremental lines of vonebner
C. Contour lines of owen
D. None of the above
Formula of hydroxyapatite crystal is____________?
Formula of hydroxyapatite crystal is____________?
A. Ca3 (Po4)2 CaCo3
B. 3Ca (Po4)2 Ca(OH)2
C. CaPo4 Ca(OH)2
D. None of the above
Physically and chemically, the dentin is closely related to______________?
Physically and chemically, the dentin is closely related to______________?
A. Bone
B. Acellular cementum
C. Enamel
D. None of the above
The microhardness of dentin is about____________?
The microhardness of dentin is about____________?
A. 1/2 that of enamel
B. 1/7 that of enamel
C. 1/4 that of enamel
D. 1/5 that of enamel
Dentinogenesis by odontoblasts first begins at_____________?
Dentinogenesis by odontoblasts first begins at_____________?
A. Pulpal end
B. Cusp tip
C. Tooth bud stage
D. Cervical area
The zone of dentin most recently formed and uncalcified is known as____________?
The zone of dentin most recently formed and uncalcified is known as____________?
A. Mantle dentin
B. Circumpulpal dentin
C. Predentin
D. Secondary dentin
The dentin receptors are unique because_____________?
The dentin receptors are unique because_____________?
A. They elicit pain to hot and cold
B. They elicit pain to touch and pressure
C. They elicit pain to chemicals
D. Elicit only pain as a response
Mirgration of odontoblasts into dentinal tubules occurs during ________________?
Mirgration of odontoblasts into dentinal tubules occurs during ________________?
A. Cavity preparation
B. Dehydration
C. Water irrigation
D. None of the above
The dentin adjacent to the dentinoenamel junction is called the______________?
The dentin adjacent to the dentinoenamel junction is called the______________?
A. Mantle dentin
B. Circumpulpal dentin
C. Predentin
D. Secondary dentin