- (A) Proximal surface of tooth
- (B) Cervical region of tooth
- (C) Cusp tips of tooth
- (D) All of the above
Medical Mcqs
- (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
- (A) Same as dentin crystals
- (B) Contains organic portion in the center
- (C) Roughly texagonal in shape
- (D) Their diameter is about 5 microns in size
- (A) Tuftelin
- (B) Sheathlin
- (C) Enamelin
- (D) Amelogenin
- (A) 66%
- (B) 76%
- (C) 86%
- (D) 96%
- (A) Tono filament
- (B) Keratin like fibre
- (C) Collagen fibre
- (D) Vimentin filament
- (A) 2.8
- (B) 3.8
- (C) 4.8
- (D) 2.3
- (A) Greater than the thickness of enamel
- (B) Less than the thickness of enamel
- (C) Equal to the thickness of enimal
- (D) None of the above
- (A) In cross sections enamel rods appear hexagonal and resembles fish scales
- (B) The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically
- (C) The apatite crystals are parallel to bodies and deviate 65° from the tails
- (D) All of the above
