Calcium hydroxide as liner

Calcium hydroxide is a thin dental liner placed near deep decay to protect the pulp and support a mineral barrier.

A liner is a very thin layer placed between a prepared tooth and its filling. Calcium hydroxide releases hydroxyl ions, creates an alkaline environment, and may encourage formation of hard tissue over a pulp that remains alive.

The dentist removes infected dentine, leaves sound or carefully managed deep dentine near the pulp, and places the liner only where indicated. A base or bonded restoration then seals the cavity against saliva and bacteria.

Arrange an examination when deep decay causes lingering heat or cold pain, spontaneous pain, swelling, or tenderness when biting. These signs can indicate inflamed or infected pulp that a liner cannot treat.

Ask how close the decay is to the pulp, whether a liner is indicated, and which material will cover it. Ask how the tooth will be sealed and what symptoms should prompt review.