- (A) Does not take place once enamel surface and invironment
- (B) Stops after 2 years of eruption
- (C) Continues till adult life
- (D) Continues through out life
Medical Mcqs
- (A) Constitute the rest lines with in the enamel rods
- (B) Have high inorganic content
- (C) They are areas of increased porosity
- (D) Allow the movement of water and small ions
- (A) Key hole appearance in cross section
- (B) Paddle appearance in cross section
- (C) Lanullate appearance in cross-section
- (D) None of the above
- (A) Enamel
- (B) Dentin
- (C) Periodontal ligament
- (D) Cementum
- (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
