Q
Narrowing of periodontal ligament in labially placed mandibular canine with age is due to_____________?
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A
A. Due to deposition of cementum and bone
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B
B. Down growths of gingival epithelium
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C
C. Gingival cysts formed from cell rests
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D
D. Reversal of function of horizontal and oblique fibres
Correct Answer:
A. A. Due to deposition of cementum and bone