.jpg)
| Untreated | N-H | No indication of thermal enhancement |
| Heat Enhanced | H | Indication of thermal enhancement |
| Heat enhanced and clarity enhancement | HC-1 | Thermal enhanced and minor fissures filling |
| HC-2 | Thermally enhanced and moderate fissures filling | |
| HC-3 | Thermally enhanced and prominent fissures filling | |
| Clarity Treatment | Clarity treatment. Foreign colourless substance found in fissures and cavities |