Which term refers to the stone or plastic replica itself?

Which term refers to the stone or plastic replica itself?

• A. Impression
• B. Final Impression
• C. Model
• D. Bite Rims

Answer: (C)

The term is model. In dental lab work, an impression is the negative mold taken of the teeth and surrounding tissues. When you pour dental stone or similar material into that impression and let it set, you get a positive reproduction—the model (also called a cast). This stone or plastic replica is what you handle to study anatomy, wax patterns, and fabricate restorations or appliances. Bite rims are used to establish occlusion and jaw relations, not to represent the actual dentition. The final impression refers to the completed impression material itself, the negative mold, rather than the reproduced model.

The term is model. In dental lab work, an impression is the negative mold taken of the teeth and surrounding tissues. When you pour dental stone or similar material into that impression and let it set, you get a positive reproduction—the model (also called a cast). This stone or plastic replica is what you handle to study anatomy, wax patterns, and fabricate restorations or appliances.

Bite rims are used to establish occlusion and jaw relations, not to represent the actual dentition. The final impression refers to the completed impression material itself, the negative mold, rather than the reproduced model.