Beyond dietary advice, what additional protective measure is appropriate for this patient who also shows wear/attrition?

Correct answer: A. Fabricate an occlusal night guard

• A. Correct. A night guard (occlusal splint) protects the worn dentition from further mechanical wear/parafunction and shields softened, eroded surfaces. (Topical fluoride and casein/CPP-ACP products are also valuable adjuncts for the erosion component.)
• B. Immediate full-mouth crowns are far too aggressive and irreversible before conservative measures are tried.
• C. Leaving active wear untreated allows continued loss of tooth structure.
• D. There is no infection here, so antibiotics are irrelevant.

Note: The source listed only 'night guard.' Distractors were reconstructed. Remember that for the EROSION component specifically, topical fluoride and waiting to brush after acid are also first-line.