What do systematic reviews say?

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

• Oral health educational interventions for nursing home staff and residents 2016 · Cochrane All outcomes

  3 to 6 months
  SoF: Gingivitis (Gingival Bleeding Index and method of Suomi; follow-up 3 to 6 months). No meta-analysis (data not comparable). 245 participants (3 RCTs); low quality. Comment: 3 studies at unclear risk of bias showed…
  3 studies · 245 participants
  Low

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

The review found no eligible studies for this question.

• Oral health educational interventions for nursing home staff and residents 2016 · Cochrane All outcomes
  SoF row 'Oral health-related quality of life': Illustrative risks -, relative effect -, participants/studies -, quality -; Comment: Outcome not reported. Not measured in any included study.
  0 studies
  No studies found

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Educational intervention with information and practical components… showed no clear difference in dental plaque compared with (Optimised) usual care (low certainty).

• Oral health educational interventions for nursing home staff and residents 2016 · Cochrane All outcomes

  3 to 60 months
  MD -0.04 [-0.26, 0.17]
  6 studies · 437 participants
  Low

Any method, procedure or policy to reduce contaminated aerosols in dental clinics vs Any other method, no treatment or combination of methods

The review found no eligible studies for this question.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Any method, procedure or policy to reduce contaminated aerosols in dental clinics vs Any other method, no treatment or combination of methods

The review found no eligible studies for this question.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

The review found no eligible studies for this question.

• Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating… 2020 · Cochrane All outcomes

  Minimum 2 weeks
  No data available (no included studies)
  0 studies
  No studies found

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

The review found no eligible studies for this question.

• Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating… 2020 · Cochrane All outcomes
  No data available (no included studies)
  0 studies
  No studies found

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

The review found no eligible studies for this question.

• Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating… 2020 · Cochrane All outcomes
  No data available (no included studies)
  0 studies
  No studies found

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

The review found no eligible studies for this question.

• Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating… 2020 · Cochrane All outcomes

  Minimum 2 weeks
  No data available (no included studies)
  0 studies
  No studies found

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

The review found no eligible studies for this question.

• Use of antimicrobial mouthwashes (gargling) and nasal sprays by healthcare workers to protect them when treating… 2020 · Cochrane All outcomes
  No data available (no included studies)
  0 studies
  No studies found

Professional oral care vs Usual oral care

• Oral care measures for preventing nursing home‐acquired pneumonia 2022 · Cochrane All outcomes
  Measured in only 1 study (834 participants), which reported no serious events and 64 non-serious events, the most common of which were oral cavity disturbances (not defined) and dental staining.
  1 study · 834 participants
  GRADE not reported

Any preprocedural mouth rinse vs Placebo, no rinsing or control

The review found no eligible studies for this question.

• Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental healthcare… 2022 · Cochrane All outcomes
  No included study assessed acceptability or feasibility.
  0 studies
  No studies found

General ventilation (e.g. natural ventilation, exhaust fans, opening windows) vs No general ventilation / standard operatory

The review found no eligible studies for this question.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

High-volume evacuation (HVE) vs No HVE

High-volume evacuation (HVE) showed no clear difference in reduction in contamination of aerosols on operator's face… compared with no HVE; GRADE not reported.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD -15.71 [-46.37, 14.95]
  2 studies · 42 participants
  GRADE not reported

Rubber dam vs No rubber dam

Rubber dam showed no clear difference in reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam; GRADE not reported.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD 0.52 [-0.11, 1.16]
  1 study · 47 participants
  GRADE not reported

Rubber dam vs No rubber dam

It is very uncertain whether rubber dam changes reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam (very low certainty).

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD 0.77 [-0.46, 2.00]
  1 study · 47 participants
  Very low

Rubber dam vs No rubber dam

It is very uncertain whether rubber dam changes reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam (very low certainty).

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD -11.70 [-15.82, -7.58]
  1 study · 10 participants
  Very low
• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD -2.80 [-4.65, -0.95]
  1 study · 20 participants
  GRADE not reported

Povidone iodine coolant vs Distilled water coolant

It is very uncertain whether povidone iodine coolant changes reduction in level of contamination in aerosols (CFU): povidone… compared with distilled water coolant (very low certainty).

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD -656.45 [-672.74, -640.16]
  1 study · 40 participants
  Very low

Ozonisation vs No ozonisation / standard operatory

The review found no eligible studies for this question.

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

High-volume evacuation (HVE) vs Conventional dental suction (low-volume evacuator / saliva ejector)

It is very uncertain whether high-volume evacuation (HVE) changes reduction in level of contamination in aerosols (CFU) during… compared with conventional dental suction (low-volume evacuator / saliva ejector) (very low certainty).

• Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious diseases 2020 · Cochrane All outcomes
  MD -2.30 [-5.32, 0.72]
  1 study · 6 participants
  Very low