Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,227 questions · 2,562 findings · 156 reviews · Oral Health

No studies found 297 · 11.6%GRADE not reported 1,616 · 63.1%Very low 405 · 15.8%Low 144 · 5.6%Moderate 81 · 3.2%High 19 · 0.7%

Systemic antibiotic prophylaxis (any regimen; topical therapy excluded) administered before and/or after tooth extraction vs placebo

Trismus (dichotomous, 7th day) · People undergoing tooth extraction (21 of 23 trials: healthy patients undergoing impacted third molar extraction; 1 routine intra-alveolar…

It is very uncertain whether systemic antibiotic prophylaxis (any regimen; topical therapy… changes trismus (dichotomous, 7th day) compared with placebo (very low certainty).

1 finding from 1 review

Systemic antibiotic prophylaxis (any regimen; topical therapy excluded) administered before and/or after tooth extraction vs placebo

Fever · People undergoing tooth extraction (21 of 23 trials: healthy patients undergoing impacted third molar extraction; 1 routine intra-alveolar…

It is very uncertain whether systemic antibiotic prophylaxis (any regimen; topical therapy… changes fever (6th-7th day) compared with placebo (very low certainty).

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Self- or observational assessment of intraoperative distress/pain/acceptance of treatment during provision of LA: anxiety/pain experience (VAS, higher scores indicate worsened anxiety) · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

Video modelling acclimatisation for LA may leads to lower self- or observational assessment of intraoperative… compared with oral hygiene video (low certainty).

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Acceptance of LA · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Completion of dental treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Adverse effects · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Successful LA/painless treatment · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Video modelling acclimatisation for LA vs Oral hygiene video

Patient satisfaction: measured by questionnaires · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

0.1% chlorine dioxide 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…

0.1% chlorine dioxide mouthwash may leads to lower dentist-reported organoleptic test (OLT) score (scale 0 to 5) compared with placebo mouthwash (low certainty).

1 finding from 1 review

Mechanical tongue cleaning (tongue scraper) vs No tongue cleaning

Adverse events · 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
    mean 2 weeks
    Adverse events: listed in the Summary of findings table but no data reported. No data were reported for adverse events.
    0 studies
    No studies found

Lactobacillus salivarius WB21 tablets vs placebo (3 tablets/4 times a day

OLT and VSC scores · 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
    Suzuki 2014 (cross-over RCT) compared Lactobacillus salivarius WB21 tablets versus placebo tablets (OLT and VSC by gas chromatography). The trial did not give usable data and we could not extract data from the graph.
    1 study
    GRADE not reported

0.6% eucalyptus chewing gum vs 0.4% eucalyptus chewing gum

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 0.6% eucalyptus chewing gum changes dentist-reported organoleptic test (OLT) score (scale 0 to 5) compared with 0.4% eucalyptus chewing gum (very low certainty).

1 finding from 1 review

Mechanical tongue cleaning (tongue scraper) vs No tongue cleaning

Patient-reported OLT score · 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
    mean 2 weeks
    Patient-reported OLT score assessed with patient's perception: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.
    0 studies
    No studies found

Green tea mouthwash 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…

Green tea mouthwash showed no clear difference in volatile sulphur compounds (VSC), halimeter compared with placebo mouthwash; GRADE not reported.

1 finding from 1 review

Triclosan/copolymer-containing fluoride toothpaste vs Sodium fluoride (control) toothpaste

Patient-reported OLT score · 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
    mean 1 week
    Patient-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.
    0 studies
    No studies found

Hinokitiol gel vs Placebo gel

Adverse events · 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
    mean 4 weeks
    Adverse events: listed in the Summary of findings table but no data reported. No data were reported for adverse events.
    0 studies
    No studies found

0.6% eucalyptus chewing gum vs Placebo chewing gum

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…

0.6% eucalyptus chewing gum showed no clear difference in volatile sulphur compounds (VSC) compared with placebo chewing gum; GRADE not reported.

1 finding from 1 review

Miswak (Salvadora persica) stick vs Chlorhexidine 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…

Miswak (Salvadora persica) stick led to lower volatile sulphur compounds (VSC) compared with chlorhexidine mouthwash; GRADE not reported.

1 finding from 1 review

Triclosan/copolymer-containing fluoride toothpaste vs Sodium fluoride (control) toothpaste

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 0.3% triclosan + PVM/MA + sodium fluoride toothpaste changes dentist-reported breath odour (OLT) score (scale 1 to 9 hedonic) compared with sodium fluoride (control) toothpaste (very low certainty).

1 finding from 1 review

Subgingival laser irradiation + povidone-iodine vs SRP

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…

Subgingival laser irradiation + povidone-iodine led to higher volatile sulphur compounds (VSC) compared with SRP alone; GRADE not reported.

1 finding from 1 review