A. Lamellar bone

B. Alveolar bone proper

D. Cortical bone

B. Enamel formation can occur in absence of dentin

C. The formation of enamel and dentin are independent of each other

D. None of the above

A. Contain collagen

B. Produce alkaline phosphatase

C. Inhibit mineralization

A. Mostly contains glycine residues

C. Triple pleated sheath

D. Exhibit cross striations at 64 ?m

A. Cementoblasts

C. Osteoblasts

D. Fibroblasts

B. Sharpehys fibres and elastic fibres

C. Collagen fibres and blood vessels

D. Lacunae and elastic fibres

A. Hypertrophy of cementum

B. Ankylosis

D. Resorption of cementum

A. 201-250 ?m

B. 151-200 ?m

C. 101-150 ?m

A. Nutritive

C. Vascular supply to the teeth

D. Production of enamel

A. Cell degenerated zone

B. Cell regenerated zone

D. Cell rich zone

A. Cementum

B. Enamel

D. Pulp

A. Only on odontoblasts

B. Mainly by odontoblasts

C. Mainly by ameloblasts

B. Shallow

C. Curved

D. Straight

A. In pulp horn

B. Above odontoblast

C. In radicular pulp

B. Mantle dentin

C. Sclerotic dentin

D. Predentin

A. Formation of hammock ligament

C. reversal of functional polarity

D. morphodifferentiation

A. Circumpulpal dentin

C. Predentin

D. Secondary dentin

A. Formation of dentin

C. Sends impulses to CNS

D. Nerve supply to dentin

A. Cervical third of the root

B. No secondary cementum forms

D. Middle third of the root

B. Elastin

C. Chitin

D. Keratin

B. None of the above

C. Equal to the thickness of enimal

D. Less than the thickness of enamel

A. Tertiary dentin

B. Interglobular dentin

D. Predentin

A. Reversal lines

B. Canaliculi

C. Lacunae

A. Stellate reticulum

C. Neutral ectodermal cells

D. Dental lamina

A. Coarse fibril bundles arranged at right angle to the dentinal surface

B. White in transmitted light and dark in reflected light

D. Dentinal tubules

A. Retzius line

C. Line of enamel tufts

D. Line of cross striations

A. Permeable membrane

B. Impermeable membrane

C. Infrapermeable membrane

A. Constitute the rest lines with in the enamel rods

C. They are areas of increased porosity

D. Allow the movement of water and small ions

B. Acellular cementum

C. Both of the above

D. None of the above

A. Pulpal end

C. Cervical area

D. Tooth bud stage

A. 16 weeks

B. 18 weeks

D. 6 weeks

B. Pulp

C. Cementum

D. Dentin

A. Alveolar bone

C. Epithelial rests of malassez

D. Hertwigs root sheath

B. Avascular

C. None of the above

D. Devoid of nervous tissue

A. Peg laterals

B. Microdontia

C. Supernumerary tooth

A. Their diameter is about 5 microns in size

C. Same as dentin crystals

D. Contains organic portion in the center

A. Longbones

C. Periodontal ligament

D. Cementum

A. Increase cellular component at the expenses of fibre component

C. Increases vascularity of the pulp

D. Decrease the calcific component of the pulp

A. 7 million

B. 5 million

C. 9 million

A. Cementum

B. Dentin

C. Pulp

A. Cementum

C. Alveolar bone

D. Gingiva

A. Enamel meet cementum at a point

C. Cementum overlaps enamel

D. Both never meet

A. Highly defined cellular zone near cemento dentinal junction (CDJ)

B. Highly defined fibrillar zone near CDJ

D. Both a and B

B. Nerve supply

C. Lymphatic supply

D. All of the above

A. Type IV collagen

C. Type I and III collagen

D. Type IV and III Collagen

B. Proprioception

C. Temperature

D. Pressure

A. Cap stage

B. Advanced bell stage

C. Bud stage

A. 70 to 75%

C. 65 to 70%

D. 55 to 60%

A. Equal dentin

B. None of the above

C. More than dentin

B. Dental papilla

C. Dental sac

D. Stellate reticulum