Onto the answers for occlusal caries interpretation practice.
1. 
- Maxillary right second molar (#2) = occlusal decay
- Maxillary right first molar (#3) = occlusal decay
- Mandibular right first molar (#30) = occlusal decay
2. 
- Maxillary left first molar (#14) = occlusal decay
3. 
- Maxillary left second molar (#15) = occlusal decay
- Mandibular left second molar (#18) = occlusal decay
- Mandibular right second molar (#31) = occlusal decay
If you have any questions about these practice radiographs, please leave a comment below. Thanks and enjoy!