Which classification would be appropriate for a cavity on the distal surface of a first molar and also extending onto its occlusal surface (involving more than two surfaces)?
Show answer and explanation
Correct answer: Complex multi-surface cavity beyond simple Class II
When a cavity involves more than two surfaces (e.g., occlusal plus distal), it becomes a complex or multi-surface cavity, not strictly limited to a single Black’s class. Modern cavity design acknowledges such complexity.
Keep practicing
More Cavity Design and Classification questions
- Which of the following is a limitation of the traditional G.V. Black cavity classification when used with modern adhesive restorative mater…
- What is meant by the “retention form” in cavity preparation design?
- Which class of cavity is most likely to require a matrix band and wedge for proper restoration of proximal contact and contour?
- Decay found on the incisal edge of a worn canine tooth (without other surfaces involved) corresponds to which class?
- Which design principle ensures that the prepared cavity resists displacement or fracture when the restoration is loaded during chewing?
- In modern conservative dentistry, what is a criticism of strictly following classical cavity designs derived from Black’s principles?