‘Sandwich technique’ of restoration of carious lesion involves application of following materials

 # ‘Sandwich technique’ of restoration of carious lesion involves application of following materials:

A. Dycal/GIC/Composites

B. Dycal/GIC/Phosphate

C. Phosphate/Miracle mix/Amalgam

D. ZOE/Amalgam/Composite

The correct answer is A. Dycal/GIC/Composites

When composite is placed over an RMGI material, this technique is often referred to as a ‘sandwich’ technique. The potential advantages of this technique are:

- The RMGI material bonds to the dentin without the need for a dental adhesive

- The RMGI material, because of its bond to dentin and potential for fluoride release (potential anti-cariogenicity), may provide a better seal when used in cases where the preparation extends gingivally onto root structure

- The favourable elastic modulus of the RMGI may reduce the effects of polymerization shrinkage

stresses. These suggested advantages are considered controversial, as no conclusive published research

based on longitudinal clinical trials evaluating the technique is available.

Reference: Sturdevant’s Art and Science of Operative Dentistry Second South Asia Edition 2019, Page No: 504

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