| OIIRR | orthodontically induced inflammatory root resorption |
| AOTM | accelerating orthodontic tooth movement |
| EARR | external apical root resorption |
| PDL | periodontal ligament |
| RAP | the regional acceleratory phenomenon |
| M-CSF | macrophage-colony stimulating factor |
| RANKL | receptor activator of nuclear factor ligand |
| OTM | orthodontic tooth movement |
| MOPs | micro-osteoperforations |