Thermoplastic elastomer

1 1. For lower premolars, the purpose of inclining the handpiece lingually is to A. B. C. D. Avoid buccal pulp horn Avoid lingual pulp horn Remove unsupported enamel Conserve lingual dentine 2. For an amalgam Restoration of weakened cusp you should A. B. C. Reduce cusp by 2mm on a flat base for more resistance Reduce cusp by 2mm following the outline of the cusp Reduce 2mm for retention form 3. Before filling a class V abrasion cavity with GIC you should A. B. C. Clean with pumice, rubber cup