Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,954 questions · 2,335 findings · 149 reviews · All outcomes

No studies found 436 · 18.7%GRADE not reported 1,370 · 58.7%Very low 254 · 10.9%Low 173 · 7.4%Moderate 80 · 3.4%High 22 · 0.9%

Chlorine dioxide + zinc mouthwash vs Placebo mouthwash

Dentist-reported organoleptic test (OLT) score (scale 0 to 5) · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

It is very uncertain whether chlorine dioxide + zinc mouthwash changes dentist-reported organoleptic test (OLT) score (scale 0 to 5) compared with placebo mouthwash (very low certainty).

1 finding from 1 review

Oral-health promotion programs (OHPPs): community-based oral-health education/training, supervised toothbrushing with fluoride toothpaste and topical fluoride, dental screening, and dietary advice vs No oral-health promotion program, or a differing (usual-care) action under similar conditions

DMFT/DMFS index (dental caries experience) · Children aged 0-12 years in Ireland

The single Irish study showed lower DMFT/S with OHPP (OR 0.52, 95% CI 0.45 to 0.61; ungraded, single study).

1 finding from 1 review

Mineral trioxide aggregate (MTA) pulpotomy dressing vs Calcium hydroxide (CH)

Overall success (composite of clinical and radiographic success) · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged 6-14 years

MTA and calcium hydroxide had similar clinical and radiographic pulpotomy success at 6 months (RR 1.00, 95% CI 0.94 to 1.06; 2 RCTs; ungraded).

2 findings from 1 review

Benzethonium chloride mouthwash vs Placebo mouthwash

VSC: methyl mercaptan · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

Benzethonium chloride mouthwash showed no clear difference in VSC: methyl mercaptan compared with placebo mouthwash; GRADE not reported.

1 finding from 1 review

Learning disability (CLD) vs No learning disability (CNLD)

Care index (CI), permanent teeth · Children aged 1-18 years

The care index (met dental care need) for permanent teeth could not be meta-analyzed because no study reported variance; it was lower or equal in children with learning disabilities in 5 of 8 studies (certainty not graded).

1 finding from 1 review

1055 to 1100 ppm F toothpaste vs 500 to 550 ppm F toothpaste

Caries increment, tooth index D(M)FT · Young children with primary (deciduous) dentition (aged 1 to 6 years at study start)

1055 to 1100 ppm F toothpaste showed no clear difference in caries increment, tooth index d(m)ft compared with 500 to 550 ppm F toothpaste (low certainty).

1 finding from 1 review

Oral-health promotion programs (OHPPs): community-based oral-health education/training, supervised toothbrushing with fluoride toothpaste and topical fluoride, dental screening, and dietary advice vs No oral-health promotion program, or a differing (usual-care) action under similar conditions

DMFT/DMFS index (dental caries experience) · Children aged 0-12 years in Japan

The single Japanese study yielded a degenerate estimate of OR 0.00 (95% CI 0.00 to 0.00; ungraded, single study).

1 finding from 1 review

0.05% chlorhexidine + 0.05% cetylpyridinium chloride + 0.14% zinc lactate mouthrinse vs Placebo mouthwash

Volatile sulphur compounds (VSC), halimeter · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

Halita mouthwash (chlorhexidine 0.05% + cetylpyridinium chloride… led to lower volatile sulphur compounds (VSC), halimeter compared with placebo mouthwash; GRADE not reported.

1 finding from 1 review

Mineral trioxide aggregate (MTA) pulpotomy dressing vs Calcium-enriched mixture (CEM)

Overall success (composite of clinical and radiographic success) · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged 6-14 years

A single RCT found no difference in pulpotomy success between MTA and calcium-enriched mixture (both 100% at 6 and 12 months; not pooled; ungraded).

1 finding from 1 review

1000 to 1250 ppm F toothpaste vs 250 ppm F toothpaste

Caries increment, tooth index D(M)FT · Children and adolescents with immature permanent dentition (aged 5 to 16 years at study start)

1000 to 1250 ppm F toothpaste showed no clear difference in caries increment, tooth index D(M)FT compared with 250 ppm F toothpaste (low certainty).

1 finding from 1 review

1055 to 1100 ppm F toothpaste vs 500 to 550 ppm F toothpaste

Adverse effects of toothpaste · Young children with primary (deciduous) dentition (aged 1 to 6 years at study start)
1 finding from 1 review

Residence in heavily contaminated area (approx. 15-40 Ci/km2) vs Residence in non-contaminated (non-exposed) area (<1 Ci/km2)

Dental caries · Children aged 5-7 years (early school-age)

In early school-age children (5-7 y) from heavily contaminated areas, individual studies gave conflicting DMFT/dmft differences (some favouring exposed, some non-exposed); the review did not pool them (ungraded).

4 findings from 1 review
Show 1 more finding

0.05% chlorhexidine + 0.05% cetylpyridinium chloride + 0.14% zinc lactate mouthrinse vs Placebo mouthwash

Adverse events · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…
1 finding from 1 review
  • Interventions for managing halitosis 2019 · Cochrane All outcomes
    mean 2 weeks
    Adverse events (Table 6). Risk with placebo mouthwash: None reported. Risk with halita mouthwash: tongue staining was seen in patients who gargled, rather than rinsed. 40 participants (1 RCT). Certainty: VERY LOW.
    1 study · 40 participants
    Very low

Mechanical tongue cleaning (tongue scraper) vs No tongue cleaning

Quality of life · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

The review found no eligible studies for this question.

1 finding from 1 review
  • Interventions for managing halitosis 2019 · Cochrane All outcomes
    Quality of life was a prespecified secondary outcome. None of the 44 included studies in the review (across all comparisons) reported quality-of-life data (review-wide evidence gap).
    0 studies
    No studies found

1055 to 1100 ppm F toothpaste vs 500 to 550 ppm F toothpaste

Caries increment, surface index D(M)FS · Young children with primary (deciduous) dentition (aged 1 to 6 years at study start)

1055 to 1100 ppm F toothpaste showed no clear difference in caries increment, surface index d(m)fs compared with 500 to 550 ppm F toothpaste (moderate certainty).

1 finding from 1 review

1700 to 2200 ppm F toothpaste vs Non-fluoride (0 ppm F) placebo toothpaste

Caries increment, surface index D(M)FS · Children and adolescents with immature permanent dentition (aged 5 to 16 years at study start)

1700 to 2200 ppm F toothpaste may leads to lower caries increment, surface index D(M)FS compared with non-fluoride (0 ppm F) placebo toothpaste (low certainty).

1 finding from 1 review

Scheduled dental recall intervals (1-, 3- or 6-monthly; oral hygiene instruction with or without scale and polish) plus daily supervised toothbrushing by carers vs usual care

Plaque · Adults (mean age 30.9 years), level of ID unclear; setting day centre

Scheduled dental recall intervals (1-, 3- or 6-monthly; oral hygiene… may leads to lower plaque (long term) compared with usual care (no specific treatment) (low certainty).

1 finding from 1 review

Learning disability (CLD) vs No learning disability (CNLD)

Restorative index (RI), permanent teeth · Children aged 1-18 years

The restorative index for permanent teeth could not be meta-analyzed (no variance data); it was lower or equal in children with learning disabilities in 4 of 9 studies, and the pattern suggested more extraction- than restoration-based care in CLD (certainty not graded).

1 finding from 1 review