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. periodontal ligament
B. enamel
C. pulp
D. cementum

Answer 1

A. Periodontal Ligament

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 PERIODONTAL LIGAMENT and causing the condition.

The periodontal ligament serves a sensory function. It is richly supplied with nerve ending that are the primary receptors of pain and pressure.