Question

Which of the following can be used as a base under CaOH2 when the remaining dentin thickness is less than 1 mm?

• A. ZnOE
• B. Resin modified GIC
• C. Polycarboxylate
• D. ZnPO4

Hint:

Resin modified GIC is preferred when the dentin thickness is minimal, as it offers both mechanical support and good bonding.

Answer 1

The Correct Option is B

When the remaining dentin thickness is less than 1 mm, it is important to provide additional support to the tooth structure before placing calcium hydroxide (CaOH2) as a base. In this situation, resin modified glass ionomer cement (GIC) can be used as a base under CaOH2. Resin modified GIC is a type of dental cement that contains a resin component to improve its mechanical properties and bond strength. It is often used as a base material because it can bond to both dentin and restorative materials, providing additional support to the tooth structure. Resin modified GIC also has good biocompatibility and can release fluoride, which can help prevent secondary caries.
Zinc oxide eugenol (ZnOE) is another commonly used dental cement, but it may not provide enough mechanical support when the remaining dentin thickness is less than 1 mm. Polycarboxylate cement and zinc phosphate (ZnPO4) cement are also options, but they do not have the same bond strength and biocompatibility as resin modified GIC.