Which of the following statements is NOT true regarding traditional cavity liners?

Show Answers

They are unnecessary in moderately deep cavities when a glass ionomer restoration is used.They have a film thickness ranging from 1 to 50 microns.They do not offer protection against thermal or electrical stimuli.They shield the pulp from harmful substances released by the restoration.They serve as a barrier to prevent microleakage beneath restorations.

Explanation

Option A is correct because traditional liners are generally not required in moderately deep cavities if a glass ionomer restoration is placed. Options B, C, and D accurately describe traditional liners: they possess a thin film thickness (1–50 microns), do not provide thermal or electrical insulation, and protect the pulp from reaction products that may leach from the restoration.