Which class describes interproximal decay on a premolar (posterior tooth) that involves contact area but not the occlusal surface?
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Correct answer: Class II
Class II cavity involves proximal (mesial or distal) surfaces of premolars and molars (posterior teeth), typically between teeth, not involving pits/fissures.
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More Cavity Design and Classification questions
- A cavity on the mesial surface of a maxillary central incisor, not involving the incisal edge, falls under which class?
- Decay involving the incisal edge and proximal surface of a maxillary canine should be classified as:
- Which cavity class refers to lesions on the gingival third of the facial or lingual surfaces of any tooth (anterior or posterior)?
- Which class was later added to G.V. Black’s original five-class system to account for caries or damage on cusp tips and incisal edges?
- In cavity design, what is the “outline form” primarily concerned with?
- What is the purpose of designing appropriate resistance form in a cavity preparation?