- (A) Enamel
- (B) Dentin
- (C) Periodontal ligament
- (D) Cementum
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- (A) It has only a small percent of organic content
- (B) Its formative cells are lost once it is completely formed
- (C) It is essentially a keratin tissue and has no blood vessels
- (D) It has no direct connection with the active cells of the dental pulp
- (A) Enamel matrix
- (B) Root
- (C) CEJ
- (D) DEJ
- (A) Cracks
- (B) Ameloblasts
- (C) Odontoblasts
- (D) Hypocalcified rods
- (A) As lines in the enamel running at right angles to the enamel surface
- (B) As lines in the dentin running at right angles to the dentino-enamel junction
- (C) In enamel and follow the apposition pattern
- (D) In dentin and follow the appositional pattern
- (A) Straight
- (B) Shallow
- (C) Bent
- (D) Curved
- (A) 25 μ m
- (B) 50 μ m
- (C) 75 μ m
- (D) 100 μ m
- (A) Proximal surface of tooth
- (B) Cervical region of tooth
- (C) Cusp tips of tooth
- (D) All of the above
- (A) Enamel of deciduous incisiors
- (B) Enamel of permanent incisors
- (C) Enamel of premolars
- (D) Dentin of all teeth, as if is formed first
- (A) Bone
- (B) Enamel
- (C) Gingiva
- (D) Dentin
