| IOSs | Intraoral scanners |
| PICO | Population, intervention, comparison, outcome |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| MeSH | Medical Subject Headings |
| CAD/CAM | Computer-aided design/computer-aided manufacturing |
| QUIN | Quality Assessment Tool For In Vitro Studies |
| PEEK | Polyether ether ketone |
| RMS | Root mean square |