Which of the following parts of the tooth is first damaged during dental decay?

Which of the following parts of the tooth is first damaged during dental decay?
  • A.
    Cement
  • B.
    Enamel
  • C.
    Dentine
  • D.
    Root
  • E.
    Gum
Correct Answer: Option B
Explanation
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The bearing of P from Q is x, where 270o The bearing of P from Q is x, where 270oo. Find the bearing of Q from P A. (x – 90)o B. (x-270)o C. (x – 135)o D. (x – 180)o Correct Answer: Option D Explanation Bearing of Q and P (180^{circ} – (360^{circ}-x)\ 180^{circ}-360^{circ}+x\ -180^{circ}+x\ x-180^{circ}) `, props: [‘comment’], data() { return {} }, methods: {} }) {{ reply.posted_by.display_name }}:   {{ reply.created_at }}

The bearing of P from Q is x, where 270oo. Find the bearing of Q from P A.…
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