| CT | computed tomography |
| MDCT | multidetector computed tomography |
| CBCT | cone-beam computed tomography |
| FMA | Frankfurt mandibular angle |
| Tmax3 | thickness between the maxillary canine and first premolar |
| Tman3 | thickness between the mandibular canine and first premolar |
| Tmax6 | thickness between the maxillary premolar and first molar |
| Tman6 | thickness between the mandibular premolar and first molar |
| Dmax3 | density between the maxillary canine and first premolar |
| Dman3 | density between the mandibular canine and first premolar |
| Dmax6 | density between the maxillary premolar and the first molar |
| Dman6 | density between the mandibular premolar and the first molar |
| SD | standard deviation |
| HU | Hounsfield unit |