Table 2.

Combined Medical Subject Headings (MESH terms) and free-text term search in MEDLINE via OVID

1 exp Dental Prosthesis/ 2 exp Dental Implants/ 3 exp Dental Prosthesis Retention/ 4 exp Jaw, Edentulous/rh, su [Rehabilitation, Surgery] 5 Exp Bone-Implant Interface/	Patient population and intervention
6 Periodontal Atrophy/ 7 exp Alveolar Bone Loss/ 8 exp Gingival Recession 9 exp Periodontal Attachment Loss/ 10 exp Alveolar Process/rh [Radiography] 11 exp Mandible/su [Surgery] 12 exp Maxilla/su [Surgery|	Outcome
13 1 or 2 or 3 or 4 14 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 15 13 or 14 16 randomized controlled trial.pt. 17 controlled clinical trial.pt. 18 randomized.ab. 19 placebo.ab. 20 clinical trial as topic.sh. 21 randomly.ab. 22 trial.ti.	Study design
23 16 or 17 or 18 or 19 or 20 or 21 or 22 24 exp animals/ not humans.sh. 25 23 not 24 26 15 and 25