RDA Practice Exam – California RDA Test Prep & Free Practice Test (2026)

Calcium hydroxide is commonly used in dentistry because it has a few unique characteristics that make it well-suited for certain treatments. One of these characteristics is that it stimulates the production of secondary dentine, allowing for the growth and strengthening of damaged teeth. Another characteristic is its antibacterial properties, which can help prevent and treat infections in the mouth. Additionally, calcium hydroxide is known for its ability to initiate tissue regeneration, aiding in the healing process. However, unlike the other options, it does not replace the need for dentinal sealer, a substance used to seal and protect the dentin layer of the tooth. This is the unique characteristic of calcium hydroxide that sets it apart from the other options and is why option C is incorrect.