A patient complains of a posterior tooth that's sensitive to brushing and also to cold. The doctor finds that the gingiva has receded, exposing the _______ and causing the condition.

Question

A patient complains of a posterior tooth that's sensitive to brushing and also to cold. The doctor finds that the gingiva has receded, exposing the _______ and causing the condition.
  A. cementum
  B. periodontal ligament
  C. enamel
  D. pulp

(d)

On the Maxillary right side there's one posterior tooth. This tooth has two cusps that are the same size, a wider occlusal table, and a single root. This tooth is a maxillary
  A. canine.
  B. first premolar.
  C. first molar.
  D. second premolar.

(c)

One function of the periodontal ligament is to
  A. fight lateral forces of the tooth.
  B. support the cortical plate.
  C. fight systemic infections.
  D. hold the tooth firmly in the socket.

(a)

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