Composite Placement Sequence — ORE Part 1 MCQ

Instant feedback + full explanation. One question, done properly.

EasyDental MaterialsComposite Placement SequenceORE Part 1

A patient requires a Class II composite restoration on the lower left second premolar. A conventional etch-and-rinse adhesive system is being used. After placing the matrix and wedge, which sequence should be followed?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: D — Etch, rinse, apply and cure adhesive, then place and cure composite increments

**A is correct.** In an etch-and-rinse composite protocol, phosphoric-acid conditioning precedes adhesive placement. After rinsing, the bonding system is applied and light-cured before resin composite is inserted; composite is then placed in increments and each increment cured. SDCEP similarly describes acid etching, washing/drying, application of a bonding system, then composite placement. B and D place composite before the adhesive interface has been established, so do not provide the required bond to tooth structure. C reverses the conditioning and adhesive stages; etching after adhesive application would disrupt or remove the adhesive layer. E incorrectly introduces silane: it is used to promote bonding to silica-containing indirect restorative surfaces, not as a routine step for bonding composite directly to enamel and dentine.

Reference: Scottish Dental Clinical Effectiveness Programme (SDCEP). Prevention and Management of Dental Caries in Children, 2nd edition, section 10.4 (2018). https://www.sdcep.org.uk/media/2zbkrdkg/sdcep-prevention-and-management-of-dental-caries-in-children-2nd-edition.pdf