Class V Restoration — ORE Part 1 MCQ

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ModerateDental MaterialsClass V RestorationORE Part 1

Which of the following is the most appropriate restorative material for a Class V cervical abrasion cavity in a non-carious patient?

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Correct answer: E — Resin-modified glass ionomer cement (RMGIC)

Explanation lettering: B = shown as A · E = shown as B · A = shown as E

The correct answer is A (RMGIC). Resin-modified glass ionomer cement provides optimal longevity for non-carious cervical lesions due to superior retention, chemical adhesion to tooth structure, and sustained fluoride release—all critical in the challenging cervical environment with limited or absent enamel. Amalgam (B, C) is not colour-matched and unsuitable for cervical aesthetics. Composite resin with total-etch (D) requires more technique-sensitive moisture control in subgingival margins and lacks RMGIC's cariostatic advantage, though it may be acceptable if aesthetics are paramount and moisture control is assured. Compomer (E) is a compromise material without sufficient evidence for this indication and offers neither the superior retention of RMGIC nor the aesthetic and strength properties of modern composite resins.

Reference: Resin-modified glass ionomer cements as the first-line material for non-carious cervical lesions: supported by multiple systematic reviews and meta-analyses (PubMed 26749791, 32462087, 10529511) and clinical trial evidence (NCT05930548). https://pubmed.ncbi.nlm.nih.gov/26749791/