No.	Search terms
1	exp tooth diseases/pc
2	exp mouth diseases/pc
3	halitosis/pc
4	oral health/
5	((dental or tooth or teeth or enamel or root*) and (decay* or caries or carious or white spot* or plaque or reminerali* or deminerali* or erosion* or abrasion* or wear)).ti,ab.
6	(denture* and (clean* or clens*)).ti,ab.
7	(periodont* or gingivi* or gingiva*).ti,ab.
8	(stomatitis or mouth ulcer* or oral ulcer* or (oral adj3 candidi*) or (mouth* adj3 candidi*) or aphthous ulcer* or (aphthae adj3 ulcer*) or (mucositis adj3 mouth*) or (mucositis adj3 oral) or xerostomi* or dry mouth*).ti,ab.
9	((oral adj3 health*) or (mouth adj3 health*) or (dental adj3 health*)).ti,ab.
10	leukoplak*.ti,ab.
11	hairy tongue*.ti,ab.
12	(halitosis or mouth odour* or mouth odor* or mouth malodour* or mouth malodor* or oral malodour* or oral malodor* or (breath adj5 malodour*) or (breath adj5 malodor*) or (breath adj5 odour*) or (breath adj5 odor*)).ti,ab.
13	or/4‐12
14	or/1‐3
15	aged/
16	"aged, 80 and over"/
17	frail elderly/
18	(geriatric? or senior? or elderly).ti,ab.
19	(old* adult? or old* person? or old* people or old* patient?).ti,ab.
20	geriatrics/
21	"health services for the aged"/
22	geriatric dentistry/
23	or/15‐22
24	prevent*.ti,ab.
25	exp preventive dentistry/
26	exp cariostatic agents/
27	(fluoride? or fluoridation).ti,ab.
28	exp dentifrices/
29	exp mouthwashes/
30	exp oral hygiene/
31	(oral adj4 care).ti,ab.
32	(oral hygiene or mouth* care or dental care or (care adj3 teeth) or (mouth* adj3 hygiene) or (plaque adj3 control*) or (plaque adj3 remov*)).ti,ab.
33	(toothbrush* or tooth‐brush* or toothpaste* or dentifrice* or mouthwash* or mouth‐wash* or mouthrinse* or mouth‐rinse*).ti,ab.
34	(floss* or interdental brush* or inter‐dental brush* or (tooth adj2 clean*) or (teeth adj2 clean*) or (denture* adj2 hygien*) or (denture* adj2 clean*) or (tongue* adj2 scrap*) or (tongue* adj2 brush*) or (chewing adj2 stick*) or (chewing adj2 gum*)).ti,ab.
35	health education, dental/
36	exp health promotion/
37	mass screening/
38	screen*.ti,ab.
39	((dental or dentist? or oral* or mouth or gum? or tooth or teeth) adj5 (instruct* or advise* or advice or educat* or promot* or teach* or train*)).ti,ab.
40	or/24‐39
41	or/25‐39
42	13 and 40 and 23
43	14 and 41 and 23
44	or/42‐43
45	randomized controlled trial.pt.
46	controlled clinical trial.pt.
47	multicenter study.pt.
48	pragmatic clinical trial.pt.
49	(randomis* or randomiz* or randomly).ti,ab.
50	groups.ab.
51	(trial or multicenter or multi center or multicentre or multi centre).ti.
52	(intervention? or effect? or impact? or controlled or control group? or (before adj5 after) or (pre adj5 post) or ((pretest or pre test) and (posttest or post test)) or quasiexperiment* or quasi experiment* or pseudo experiment* or pseudoexperiment* or evaluat* or time series or time point? or repeated measur*).ti,ab.
53	non‐randomized controlled trials as topic/
54	interrupted time series analysis/
55	controlled before‐after studies/
56	or/45‐55
57	exp animals/
58	humans/
59	57 not (57 and 58)
60	review.pt.
61	meta analysis.pt.
62	news.pt.
63	comment.pt.
64	editorial.pt.
65	cochrane database of systematic reviews.jn.
66	comment on.cm.
67	(systematic review or literature review).ti.
68	or/59‐67
69	56 not 68
70	44 and 69