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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)

149 questions in 24 reviews · cluster CL0141

current versions
No studies 32 · 21.5%Ungraded 89 · 59.7%Very low 19 · 12.8%Low 5 · 3.4%Moderate 2 · 1.3%High 2 · 1.3%

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.

Intervention categories, outcome domains and clusters are a proposed key pending human validation. Clear all filters

QuestionEffectEvidenceStatus / GRADE
Granulocyte-macrophage colony-stimulating factor (GM-CSF), mouthwash vs Sucralfate mouthwash
Oral mucositis (severe) · Adults receiving radiotherapy to the head and neck · RT to head and neck
Interventions for preventing oral mucositis in patients with cancer receiving treatment: cytokines and… (2017) · Cochrane
RR 0.54 [0.24, 1.21]1 study · 40 participantsUngraded
Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)
Dental plaque (various plaque indices) · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures… · 6 months
Chlorhexidine mouthrinse as an adjunctive treatment for gingival health (2017) · Cochrane
SMD -1.43 [-1.76, -1.10]11 studies · 2075 participantsHigh
Granulocyte-macrophage colony-stimulating factor (GM-CSF), mouthwash vs Sucralfate mouthwash
Oral mucositis (moderate to severe) · Adults receiving radiotherapy to the head and neck · RT to head and neck
Interventions for preventing oral mucositis in patients with cancer receiving treatment: cytokines and… (2017) · Cochrane
RR 0.96 [0.80, 1.14]1 study · 40 participantsUngraded
Antiseptic mouthrinse vs Placebo
Survival · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region
Pharmacological interventions for preventing dry mouth and salivary gland dysfunction following radiotherapy (2017) · Cochrane
No survival data were reported.0 studiesNo studies
Erythropoietin mouthwash vs Placebo
Oral mucositis (any severity) · Adults receiving bone marrow/stem cell transplantation after conditioning therapy for haematological cancers
Interventions for preventing oral mucositis in patients with cancer receiving treatment: cytokines and… (2017) · Cochrane
RR 0.35 [0.21, 0.60]1 study · 80 participantsUngraded
Antiseptic mouthrinse vs Placebo
Xerostomia · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region
Pharmacological interventions for preventing dry mouth and salivary gland dysfunction following radiotherapy (2017) · Cochrane
No data on xerostomia were reported.0 studiesNo studies
Erythropoietin mouthwash vs Placebo
Number of days in hospital · Adults receiving bone marrow/stem cell transplantation after conditioning therapy for haematological cancers
Interventions for preventing oral mucositis in patients with cancer receiving treatment: cytokines and… (2017) · Cochrane
MD -2.95 [-7.73, 1.83]1 study · 80 participantsUngraded
Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)
Dental plaque (various plaque indices) · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures… · 4 to 6 weeks
Chlorhexidine mouthrinse as an adjunctive treatment for gingival health (2017) · Cochrane
SMD -1.45 [-1.90, -1.00]12 studies · 950 participantsHigh
Chlorhexidine mouthrinse vs Placebo or no intervention (including routine care)
Outcome NR · Children and adolescents below 18 years at study start (included studies: children from birth to 15 years), with…
Chlorhexidine treatment for the prevention of dental caries in children and adolescents (2015) · Cochrane
There were no trials on other products containing chlorhexidine such as sprays, toothpastes, chewing gums or mouthrinses.0 studiesNo studies
Antiseptic mouthwash (e.g. chlorhexidine) vs Another topical agent or placebo
Pain relief · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers
Topical treatments for HIV‐related oral ulcers (2012) · Cochrane
No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…0 studiesNo studies
Antiseptic mouthwash (e.g. chlorhexidine) vs Another topical agent or placebo
Duration to heal oral ulcerations after initiation of treatment · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers
Topical treatments for HIV‐related oral ulcers (2012) · Cochrane
No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…0 studiesNo studies
Antiseptic mouthwash (e.g. chlorhexidine) vs Another topical agent or placebo
Healing of ulceration · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers
Topical treatments for HIV‐related oral ulcers (2012) · Cochrane
No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…0 studiesNo studies
Antiseptic mouthwash (e.g. chlorhexidine) vs Another topical agent or placebo
Incidence and recurrence after healing of ulcers · HIV‐infected adults (> 13 years of age, per CDC) with one or more painful intraoral aphthous ulcers
Topical treatments for HIV‐related oral ulcers (2012) · Cochrane
No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…0 studiesNo studies
Carboxymethylcellulose (CMC) mouthwash vs Glycerin mouthwash
Improvement in dry mouth ('excellent benefit', dichotomous) · 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
RR 3.95 [1.17, 13.36]1 study · 148 participantsUngraded
Allopurinol mouthrinse vs Placebo/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 0.66 [0.5, 0.86]2 studiesUngraded
Allopurinol mouthrinse 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 0.77 [0.5, 1.19]4 studiesUngraded
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
Salinum (linseed) mouthwash vs Salinum plus chlorhexidine mouthwash
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
Johansson 2001 (crossover, n=33, Sjogren's syndrome): both products improved oral dryness and chewing/swallowing; Salinum alone reduced speaking problems and burning mouth. Paired data not accounted for; no usable…1 study · 33 participantsUngraded
OASIS moisturising mouthwash vs Experimental mouthwash formulation
Xerostomia (dry mouth) · 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
Shirodaria 2006 (crossover): OASIS reported to give a statistically significant improvement over subjects' normal remedies, but the report did not present the randomised OASIS-versus-experimental comparison; no data…1 studyUngraded
Chlorhexidine mouthwash vs Salt and soda mouthwash
Mucositis eradicated · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
RR 1.10 [0.90, 1.35]1 study · 138 participantsUngraded
Listerine mouthwash vs Placebo mouthwash
Plaque · Adults with dental implants and peri-implant mucositis at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
MD -0.88 [-0.93, -0.83]1 study · 20 participantsUngraded
'Magic' mouthwash (lidocaine, diphenhydramine, aluminium hydroxide) vs Salt and soda mouthwash
Mucositis eradicated · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
RR 0.98 [0.78, 1.24]1 study · 133 participantsUngraded
Phenytoin mouthrinse vs Placebo
Average pain scores (0-100 VAS) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD -1.70 [-3.85, 0.45]1 study · 12 participantsUngraded
Chlorhexidine mouthwash vs Salt and soda mouthwash
Time to heal mucositis (days) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD -0.40 [-1.49, 0.69]1 study · 100 participantsUngraded
'Magic' mouthwash (lidocaine, diphenhydramine, aluminium hydroxide) vs Salt and soda mouthwash
Average pain scores (0-100 VAS) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD -0.60 [-10.92, 9.72]1 study · 57 participantsUngraded
'Magic' mouthwash (lidocaine, diphenhydramine, aluminium hydroxide) vs Salt and soda mouthwash
Time to heal mucositis (days) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD 0.17 [-0.97, 1.31]1 study · 91 participantsUngraded
Chlorhexidine mouthwash vs Salt and soda mouthwash
Average pain scores (0-100 VAS) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD -3.50 [-13.35, 6.35]1 study · 63 participantsUngraded
Amine fluoride/stannous fluoride (AmF/SnF2) mouthwash vs Chlorhexidine mouthwash
Change in taste · Adults with dental implants and healthy peri-implant soft tissues at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
MD -0.55 [-1.02, -0.08]1 study · 33 participantsUngraded
Amine fluoride/stannous fluoride (AmF/SnF2) mouthwash vs Chlorhexidine mouthwash
Implant failure · Adults with dental implants and healthy peri-implant soft tissues at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
RR 0.28 [0.01, 6.43]1 study · 33 participantsUngraded
Benzydamine hydrochloride mouthwash vs Placebo
Improvement in mucositis · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
RR 1.22 [0.94, 1.60]2 studies · 102 participantsUngraded
Allopurinol mouthwash vs Placebo
Improvement in mucositis · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
RR 6.33 [2.18, 18.37]1 study · 44 participantsUngraded
Allopurinol mouthwash vs Placebo
Mucositis eradicated · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
RR 19.00 [1.17, 307.63]1 study · 44 participantsUngraded
Allopurinol mouthwash vs Placebo
Time to heal mucositis (days) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Interventions for treating oral mucositis for patients with cancer receiving treatment (2010) · Cochrane
MD -4.50 [-5.77, -3.23]1 study · 44 participantsUngraded
Listerine mouthwash vs Placebo mouthwash
Probing pocket depth · Adults with dental implants and peri-implant mucositis at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
MD 0.15 [0.06, 0.24]1 study · 20 participantsUngraded
Listerine mouthwash vs Placebo mouthwash
Probing attachment level · Adults with dental implants and peri-implant mucositis at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
MD 0.07 [-0.11, 0.25]1 study · 20 participantsUngraded
Amine fluoride/stannous fluoride (AmF/SnF2) mouthwash vs Chlorhexidine mouthwash
Patient satisfaction (desire for future use) · Adults with dental implants and healthy peri-implant soft tissues at baseline · 3 months
Interventions for replacing missing teeth: maintaining and recovering soft tissue health around dental… (2010) · Cochrane
MD 2.08 [1.52, 2.64]1 study · 33 participantsUngraded
Two-phase oil-water mouthrinse (0.05% cetylpyridinium chloride) vs Essential oils mouthrinse (Listerine)
Organoleptic assessment of halitosis · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 6 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Kozlovsky 1996 (6-week parallel comparison): mean organoleptic score (scale 0 to 5). Two-phase oil-water (0.05% cetylpyridinium chloride): 2.14 (SD 0.88) at baseline to 0.42 (SD 0.55) at week 6 (about 80% reduction);…1 study · 50 participantsUngraded
Cetylpyridinium chloride + essential oils + chlorine dioxide + zinc mouthrinse (Breath Rx) vs Placebo
Halimeter-assessed volatile sulphur compounds (VSC) (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in halimeter-assessed VSC (ppb). Breath Rx: -66.84 at 2 weeks (67.65% reduction), -77.87 at 4 weeks (78.82% reduction); Placebo: -39.86 at 2 weeks, -36.77 at 4 weeks (41.75%). No between-group…1 studyUngraded
Chlorine dioxide + zinc mouthrinse (Oxygene) vs Placebo
Halimeter-assessed volatile sulphur compounds (VSC) (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in halimeter-assessed VSC (ppb). Oxygene: -47.63 at 2 weeks (64.97% reduction), -53.28 at 4 weeks (72.67% reduction); Placebo: -39.86 at 2 weeks, -36.77 at 4 weeks (41.75%). No between-group…1 studyUngraded
Two-phase oil-water mouthrinse (0.05% cetylpyridinium chloride) vs Essential oils mouthrinse (Listerine)
Peak volatile sulphur compounds (VSC) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 6 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Kozlovsky 1996: peak VSC (ppb). Two-phase oil-water (0.05% cetylpyridinium chloride): 94 (SD 36) at baseline to 56 (SD 10) at week 6 (less than 40% reduction); Control essential oils (Listerine): 79 (SD 40) to 56 (SD…1 study · 50 participantsUngraded
Pericarp extract of Garcinia mangostana L mouthrinse (herbal) vs Placebo
Halimeter-assessed volatile sulphur compounds (VSC) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 15 days
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Rassameemasmaung 2007: halimeter-assessed VSC (ppb). Herbal (Garcinia mangostana L): 248.35 (SD 172.30) at baseline to 100.54 (SD 69.37) at day 15 (59.68% reduction, P < 0.05); Placebo: 237.45 (SD 114.15) to 176.83 (SD…1 study · 60 participantsUngraded
0.05% chlorhexidine + 0.05% cetylpyridinium chloride + 0.14% zinc lactate mouthrinse vs Placebo
Organoleptic assessment of halitosis (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 2 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Winkel 2003 (2-week trial): mean change (SD) in organoleptic score (scale 0 to 5). 0.05% chlorhexidine + 0.05% cetylpyridinium chloride + 0.14% zinc lactate: -1.13 (1.1), baseline 2.8 (0.5) to 1.5 (1.0) at day 14, P <…1 study · 40 participantsUngraded
0.05% chlorhexidine + 0.05% cetylpyridinium chloride + 0.14% zinc lactate mouthrinse vs Placebo
Peak volatile sulphur compounds (VSC) (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 2 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Winkel 2003: mean change (SD) in peak VSC (ppb). Mouthrinse: -120 (92), baseline 292 (141) to 172 (104) at day 14, P < 0.005; Placebo: 8 (145), baseline 352 (161) to 360 (254). The mouthrinse caused a significantly…1 study · 40 participantsUngraded
Cetylpyridinium chloride + essential oils + chlorine dioxide + zinc mouthrinse (Breath Rx) vs Placebo
Organoleptic assessment of halitosis (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in organoleptic score (scale 0 to 5). Breath Rx (cetylpyridinium chloride + essential oils + chlorine dioxide + zinc): -0.52 at 2 weeks, -0.41 at 4 weeks; Placebo: 0.23 at 2 weeks, 0.16 at 4…1 studyUngraded
Chlorine dioxide + zinc mouthrinse (Oxygene) vs Placebo
Organoleptic assessment of halitosis (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in organoleptic score (scale 0 to 5). Oxygene (chlorine dioxide + zinc): 0 at 2 weeks, 0.06 at 4 weeks; Placebo: 0.23 at 2 weeks, 0.16 at 4 weeks. Oxygene did not appear to reduce organoleptic…1 studyUngraded
Zinc chloride + sodium chlorite mouthrinse (TriOral) vs Control mouthrinse (containing neither zinc chloride nor sodium chlorite)
Halimeter-assessed volatile sulphur compounds (VSC) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Codipilly 2004: precise data could not be extracted (results presented as graph plots). Reported VSC reductions from baseline for zinc chloride + sodium chlorite (TriOral): 55% (P < 0.01) at 2 weeks and 60% (P < 0.01)…1 studyUngraded
Essential oils mouthrinse (Listerine) vs Placebo
Organoleptic assessment of halitosis (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in organoleptic score (scale 0 to 5). Essential oils (Listerine): 0.02 at 2 weeks, 0 at 4 weeks; Placebo: 0.23 at 2 weeks, 0.16 at 4 weeks. Listerine did not reduce organoleptic scores. No…1 studyUngraded
Essential oils mouthrinse (Listerine) vs Placebo
Halimeter-assessed volatile sulphur compounds (VSC) (mean change from baseline) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Borden 2002: mean change in halimeter-assessed VSC (ppb). Essential oils (Listerine): -43.22 at 2 weeks (48.54% reduction), -68.90 at 4 weeks (77.39% reduction); Placebo: -39.86 at 2 weeks (45.25%), -36.77 at 4 weeks…1 studyUngraded
Zinc chloride without sodium chlorite mouthrinse (Breath Rx containing cetylpyridinium chloride) vs Control mouthrinse (containing neither zinc chloride nor sodium chlorite)
Halimeter-assessed volatile sulphur compounds (VSC) · Adults over 18 years with a clinical or self-assessed diagnosis of halitosis, without significant comorbidity (e.g.… · 4 weeks
Mouthrinses for the treatment of halitosis (2008) · Cochrane
Codipilly 2004: reported VSC reduction from baseline for zinc chloride minus sodium chlorite (Breath Rx containing cetylpyridinium chloride): 38% (P < 0.05) at 2 weeks, versus a control containing neither zinc chloride…1 studyUngraded