| FOP | Fibrodysplasia Ossificans Progressiva |
| DMFT | Decayed, Missing, Filled Teeth |
| OHI-S | Oral Hygiene Index—Simplified |
| TMJ | Temporomandibular Joint |
| CT | Computed Tomography |
| FDR | False Discovery Rate |
| ACVR1 | Activin A receptor type I |
| BMP | Bone Morphogenetic Protein |
| WHO | World Health Organization |
| STROBE | Strengthening the Reporting of Observational Studies in Epidemiology |
| OHStat | Oral Health Statistics (guidelines) |
| ICC | Intraclass Correlation Coefficient |
| CI | Confidence Interval |
| HU | Hounsfield Units |
| MID | Minimal Important Difference |
| SD | Standard Deviation |
| CPP-ACP | Casein Phosphopeptide—Amorphous Calcium Phosphate |