Why is routine use of sharp explorers discouraged for diagnosing early enamel caries?

A 34-year-old woman reports tooth sensitivity and presents with smooth, cupped-out depressions on the palatal surfaces of her maxillary anterior teeth. She has a history of chronic gastroesophageal reflux disease (GERD).

What is the most likely cause of these lesions?

Which of the following best explains the mechanism of dentin hypersensitivity?

A 45-year-old patient presents with a pigmented lesion on the posterior alveolar mucosa, adjacent to a molar with an existing restoration. The lesion is asymptomatic, flat, and bluish-gray in appearance. There is no reported history of trauma or systemic pigmentation disorders.

Which of the following is the most likely diagnosis?

A 52-year-old patient presents with V-shaped notches at the cervical areas of multiple premolars. The lesions are hard, smooth, and not sensitive to percussion. The patient brushes aggressively using a hard-bristled toothbrush.

What is the most likely diagnosis?

Why is air drying useful in the visual detection of early enamel caries?

Which of the following are included in Keyes’ original triad for dental caries development?

(Multiple Correct Answers)