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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

1,325 questions in 34 reviews · Oral medicine and oral cancer

current versions
No studies 164 · 12.4%Ungraded 841 · 63.5%Very low 209 · 15.8%Low 72 · 5.4%Moderate 38 · 2.9%High 1 · 0.1%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
GM-CSF vs Sucralfate
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.96 [0.8, 1.14]1 study · 40 participantsUngraded
Amifostine vs Placebo/no treatment
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.95 [0.91, 0.99]3 studies · 430 participantsModerate
Various saliva stimulants (chewable tablet, lozenges, chewing gum, CMC mouthrinse/sprays; 8-arm) vs Saliva substitutes / other products
Xerostomia (dry mouth relief) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Bjornstrom 1990 (8-arm crossover, high risk of bias, 106 enrolled, 55 used all 8 products): all products relieved dry mouth and difficulty talking/swallowing 'to some extent'; V6 chewing gum and Salivin lozenge ranked…1 study · 106 participantsUngraded
Benzydamine vs Placebo
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.67 [0.47, 0.97]1 study · 36 participantsUngraded
Laser (low level) vs Placebo/sham/no treatment
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.64 [0.38, 1.08]2 studiesUngraded
Oxygenated glycerol triester (OGT) spray vs Saliveeze (aqueous electrolyte) spray
Xerostomia (mouth dryness scale) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
SMD 0.77 [0.38, 1.15]2 studiesUngraded
Traumeel vs Placebo
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.71 [0.49, 1.05]1 study · 30 participantsUngraded
Prednisone vs Placebo
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 1.03 [0.85, 1.24]1 study · 66 participantsUngraded
Mucin spray (Saliva Orthana) vs Placebo spray (base without mucin)
Patient satisfaction / desire to continue treatment · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Sweeney 1997: majority in both groups wished to continue the allocated spray, no significant difference (Analysis 1.3). Duxbury 1989: 14/30 (46.6%) and 15/30 (50%) wished to continue Saliva Orthana and the spray base…2 studiesUngraded
CMC spray / HCC spray / HCC gel vs Liquid margarine (and between each other)
Xerostomia (median oral dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Furumoto 1998 (crossover, n=28, medians/IQR): median day-10 oral dryness (lower = less dry): CMC spray 28.00 (3.06), HCC spray 28.75 (2.23), HCC gel 27.75 (3.62), margarine 29.25 (5.06). Only HCC gel showed a…1 study · 28 participantsUngraded
Cryotherapy (ice chips) 30 minutes vs Cryotherapy (ice chips) 60 minutes
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.68 [0.36, 1.3]1 study · 178 participantsUngraded
Intestinal trefoil factor vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.22 [0.1, 0.48]1 study · 99 participantsUngraded
Aloe vera vs Placebo
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.13 [0.02, 0.97]1 study · 61 participantsUngraded
Pilocarpine vs Placebo
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.89 [0.58, 1.37]1 study · 34 participantsUngraded
Yangyin-humo decoction vs Traditional Western medicine
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.65 [0.41, 1.02]1 study · 42 participantsUngraded
Systemic antibiotic (clarithromycin) vs No treatment
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.69 [0.48, 1.01]1 study · 70 participantsUngraded
Oral care protocol vs No treatment/usual care
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.91 [0.82, 1.02]1 study · 150 participantsUngraded
Intraoral device releasing Biotene Oral Balance gel vs Manually administered bolus of the same gel
Xerostomia (Xerostomia Inventory) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
SMD -1.01 [-1.44, -0.58]1 study · 22 participantsUngraded
Hydrolytic enzymes vs No treatment
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
no estimate extracted3 studiesUngraded
Shenqi-fanghou vs No treatment
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.9 [0.8, 1]1 study · 140 participantsUngraded
Propantheline vs Placebo
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.4 [0.12, 1.31]1 study · 12 participantsUngraded
Commercial mouthcare system (Biotene Oral Balance / Xerostom) vs Usual care or CMC-based control
Salivary flow (unstimulated whole saliva) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
MD 0.02 [-0.02, 0.06]2 studiesUngraded
Sucralfate vs Placebo/usual care
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.75 [0.54, 1.04]4 studiesUngraded
V6 chewing gum vs PTC chewing gum (xylitol/sorbitol/mannitol)
Salivary flow (saliva secretion) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Olsson 1991 (crossover, high risk of bias, n=14): both gums increased saliva secretion, peaking 17.5 minutes after chewing started; significant treatment-by-period interaction; no per-group data presented.1 study · 14 participantsUngraded
Amifostine vs Placebo/no treatment
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.68 [0.45, 1.03]9 studies · 845 participantsVery low
Cryotherapy (ice chips) vs No treatment
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.36 [0.17, 0.77]5 studies · 472 participantsLow
Pilocarpine lozenge (3 mg or 5 mg) vs Placebo lozenge
Xerostomia (oral dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's… · Single dose (up to 3 hours)
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Taweechaisupapong 2006 (crossover): participants reported a statistically significant improvement in oral dryness after both 3 mg and 5 mg pilocarpine lozenges vs placebo (P <= 0.05); no usable data presented. No…1 study · 33 participantsUngraded
Mucin spray (Saliva Orthana) vs Placebo spray (base without mucin)
Oral health assessment · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Blixt-Johansen 1992 (parallel, elderly long-term care, poor oral mucosa): oral mucosa improved in both groups but a much greater reduction in oral pathology in the mucin spray group; no data presented.1 studyUngraded
GM-CSF vs Placebo/no treatment
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
no estimate extracted8 studiesUngraded
Indigo wood root vs Saline (placebo)
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.14 [0.02, 0.93]1 study · 20 participantsUngraded
Glutamine (intravenous) vs Placebo
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.25 [0.1, 0.62]3 studies · 93 participantsUngraded
Radiotherapy (morning) vs Radiotherapy (afternoon/evening)
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
no estimate extracted2 studiesUngraded
Chlorhexidine vs Placebo/no treatment
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.82 [0.54, 1.23]4 studies · 244 participantsLow
Carbopol (polyacrylic acid/acetate) spray vs Placebo spray
Xerostomia (oral dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
van der Reijden 1996 (crossover, Sjogren's syndrome): carbopol spray found partially effective; none of the sprays were completely effective; no data suitable for inclusion.1 studyUngraded
Honey vs No treatment
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.48 [0.31, 0.74]3 studiesUngraded
Intraoral device releasing Biotene Oral Balance gel vs Usual care (no intraoral device)
Xerostomia (mouth dryness, median) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Frost 2002 (crossover, n=30, Sjogren's syndrome): overall mouth dryness favoured the device but only nearly significant (median 4 (IQR 2 to 4) device vs 3 (2 to 4) control; P = 0.056). Speech (P = 0.003) and swallowing…1 study · 30 participantsUngraded
Mucin spray (Saliva Orthana) vs Placebo spray (base without mucin)
Duration of relief of dryness · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Duxbury 1989: no difference between mucin spray and placebo in the duration of relief of dryness (Analysis 1.4).1 studyUngraded
Chewing gum (mechanical saliva stimulant) vs Saliva substitute spray
Patient preference · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Bots 2005: statistically significant preference for chewing gum over Xialine spray, 39/49 (80%) preferred gum vs 10/49 (20%) spray (Chi2 17.16, df=1; P < 0.001) (Analysis 2.3). Davies 2000: more people preferred gum,…1 study · 65 participantsUngraded
Prednisone vs Placebo
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.64 [0.17, 2.45]1 study · 66 participantsUngraded
Buffered 'Prophylin' prophylactic gel vs Placebo (unbuffered gel / water)
Oral health (oral pH, cariogenic bacteria, Candida) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
No difference between buffered gel, unbuffered gel and water for oral pH, cariogenic bacteria or Candida species.1 study · 14 participantsUngraded
GM-CSF vs Sucralfate
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.54 [0.24, 1.21]1 study · 40 participantsUngraded
Betaine (BET) toothpaste (4%) vs SLS toothpaste (1%) and combined BET+SLS toothpaste
Xerostomia (relief of oral dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Rantanen 2003 (crossover): relief of oral dryness BET 44% vs BET+SLS 22% (P = 0.002) vs SLS 18% (P = 0.022) vs reference toothpaste 7% (P < 0.001); betaine-only significantly better than the other toothpastes. No…1 studyUngraded
Laser (low level) vs Povidone
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.29 [0.16, 0.54]1 study · 50 participantsUngraded
Honey vs No treatment
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.7 [0.56, 0.88]3 studiesUngraded
Beta carotene vs No treatment
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.38 [0.14, 1.02]1 study · 20 participantsUngraded
Iseganan vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
no estimate extracted2 studiesUngraded
Xanthum gum-containing spray (Xialine) vs Placebo spray (base without xanthum)
Xerostomia (EORTC dry mouth score) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Jellema 2001 (crossover, n=30, post-radiotherapy): no statistically significant difference between Xialine (xanthum gum) spray and placebo on the EORTC dry mouth score (Analysis 1.2). van der Reijden 1996: xanthum…2 studies · 30 participantsUngraded
Polaprezinc vs Azulene
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.09 [0.01, 0.65]1 study · 31 participantsUngraded
Carboxymethylcellulose (CMC) spray vs Salinum linseed oil spray
Patient preference · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Statistically significant preference for linseed spray: of 17 with a preference, more favoured linseed (Chi2 4.77, df=1; P = 0.029); 3 expressed no preference.1 study · 20 participantsUngraded
CMC spray / aloe vera gel / canola oil spray vs Mucin spray (and between each other)
Xerostomia (mean xerostomia score) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Momm 2005 (crossover, n=123): all four treatments significantly reduced dryness vs baseline (mean xerostomia score, scale 1 to 6: baseline 4.5 +/- 0.11; post-treatment aloe vera 3.7 +/- 0.11, CMC 3.8 +/- 0.12, canola…1 study · 123 participantsUngraded