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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.
71 questions in 12 reviews · cluster CL0100
current versionsNo studies 6 · 8.5%Ungraded 28 · 39.4%Very low 27 · 38%Low 8 · 11.3%Moderate 2 · 2.8%High 0 · 0%
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
| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Prophylaxis (teeth cleaning) and CHX or iodine-NaF solution application in the dentition of women (mothers) vs Placebo Mother microbiological presence · For interventions, pregnant women and mothers of infants in the first year of life; for outcomes, children up to 6… Interventions with pregnant women, new mothers and other primary caregivers for preventing early childhood… (2024) · Cochrane | Narrative (Dasanayake 1993; Dasanayake 2002): significant reductions in MS and other bacteria immediately post-treatment; chlorhexidine varnish significantly reduced maternal S. mutans over ~12 months. | 2 studies | Ungraded |
Prophylaxis (teeth cleaning) and CHX or iodine-NaF solution application in the dentition of women (mothers) vs Placebo Caries presence in primary teeth · For interventions, pregnant women and mothers of infants in the first year of life; for outcomes, children up to 6… · Children assessed at 2-3 yrs Interventions with pregnant women, new mothers and other primary caregivers for preventing early childhood… (2024) · Cochrane | RR 0.97 [0.80, 1.19] | 3 studies · 479 participants | Very low |
Chlorhexidine (CHX) vs Essential oils/herbal mouthwash Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · 15 cm from mouth (essential oil mouthwash B) Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -44.1 [-59.12, -29.08] | 1 study · 20 participants | Ungraded |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · cold CHX vs cold CPC; assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD 8.8 [2.7, 14.9] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Water (distilled) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | At operator level, because of high heterogeneity (I2 = 98%), the results were not meta-analysed (6 studies, 196 participants). No pooled estimate or GRADE rating. | 6 studies · 196 participants | Ungraded |
Full-mouth disinfection (FMD): scaling/root planing (subgingival instrumentation) of all quadrants within 24 hours plus adjunctive antiseptic (chlorhexidine) treatments (rinsing, pocket irrigation, tongue/tonsil brushing) vs Quadrant scaling and root planing (control): SRP of each quadrant in separate sessions at least one week apart Pocket closure (sites with PPD <=4 mm) · Adults with a clinical diagnosis of (chronic) periodontitis (1999 classification); studies of aggressive… Full‐mouth treatment modalities (within 24 hours) for periodontitis in adults (2022) · Cochrane | Pocket closure (number/proportion of sites with PPD <=4 mm after treatment): 9 studies reported; all showed an increase in closed pockets after treatment; 8 of 9 found no between-group difference; Koshy 2005 found a… | 9 studies | Ungraded |
Chlorhexidine (CHX) vs Povidone iodine Reduction in level of contamination by particles <=5 um (droplet nuclei) at >=2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · droplet nuclei; anaerobic cultures (9 feet behind patient) Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -0.8 [-11.65, 10.05] | 1 study · 40 participants | Very low |
Chlorhexidine (CHX) vs Water (distilled) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · combined patient and operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -632.94 [-1267.33, 1.45] | 3 studies · 80 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · cold CHX vs tempered CPC; assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD 17.4 [11.3, 23.5] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Water (distilled) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · tempered CHX; combined operator, assistant and patient level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -101.1 [-107.01, -95.19] | 1 study · 20 participants | Low |
Full-mouth disinfection (FMD): scaling/root planing (subgingival instrumentation) of all quadrants within 24 hours plus adjunctive antiseptic (chlorhexidine) treatments (rinsing, pocket irrigation, tongue/tonsil brushing) vs Quadrant scaling and root planing (control): SRP of each quadrant in separate sessions at least one week apart Change in probing pocket depth (PPD) · Adults with a clinical diagnosis of (chronic) periodontitis (1999 classification); studies of aggressive… · 6 to 8 months (SoF); similar at 3 to 4 months Full‐mouth treatment modalities (within 24 hours) for periodontitis in adults (2022) · Cochrane | MD 0.11 [-0.04, 0.27] | 6 studies · 214 participants | Low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · tempered CHX vs cold CPC; operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -11.5 [-18.37, -4.63] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Essential oils/herbal mouthwash Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · pharynx level (patient level; not analysed) Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | Bay 1993 compared 0.12% CHX with essential oil mouthwash C (Listerine) at pharynx level (Andersen's level 2), which was considered patient level and hence was not analysed. No pooled estimate or GRADE rating. | 1 study | Ungraded |
Chlorhexidine (CHX) vs Ozonated water Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level; aerobic cultures Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -17.8 [-33.7, -1.9] | 1 study · 40 participants | Very low |
Full-mouth disinfection (FMD): scaling/root planing (subgingival instrumentation) of all quadrants within 24 hours plus adjunctive antiseptic (chlorhexidine) treatments (rinsing, pocket irrigation, tongue/tonsil brushing) vs Quadrant scaling and root planing (control): SRP of each quadrant in separate sessions at least one week apart Tooth loss · Adults with a clinical diagnosis of (chronic) periodontitis (1999 classification); studies of aggressive… Full‐mouth treatment modalities (within 24 hours) for periodontitis in adults (2022) · Cochrane | Tooth loss: None of the studies comparing FMD vs control reported tooth loss. | 0 studies | No studies |
Chlorhexidine rinse (0.12% and 0.2%, pre- and post-extraction) vs Placebo or no treatment Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | OR 0.38 [0.25, 0.58] | 6 studies · 1547 participants | Moderate |
Chlorhexidine (CHX) vs Saline Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · 3 feet from patient's mouth Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -668.4 [-1044.45, -292.35] | 1 study · 20 participants | Ungraded |
Chlorhexidine (CHX) vs Boric acid Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -8.03 [-9.65, -6.41] | 1 study · 60 participants | Very low |
Chlorhexidine (CHX) vs Povidone iodine Reduction in level of contamination by particles <=5 um (droplet nuclei) at >=2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · droplet nuclei; aerobic cultures (9 feet behind patient) Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD 0.2 [-7.28, 7.68] | 1 study · 40 participants | Very low |
Chlorhexidine (CHX) vs Povidone iodine Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level; aerobic and anaerobic cultures combined Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -4.7 [-7.01, -2.39] | 1 study · 30 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · tempered CHX vs cold CPC; assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -8.8 [-14.9, -2.7] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Saline Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -21.33 [-36.8, -5.86] | 1 study · 12 participants | Very low |
Chlorhexidine rinse (0.2%) pre- and post-extraction vs Chlorhexidine rinse (0.2%) post-extraction only Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | RR 0.58 [0.15, 2.17] | 1 study · 99 participants | Ungraded |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · tempered CHX vs tempered CPC; operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -2.2 [-9.07, 4.67] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Boric acid Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -26.6 [-28.24, -24.96] | 1 study · 60 participants | Very low |
Chlorhexidine (CHX) vs Ozonated water Reduction in level of contamination by particles <=5 um (droplet nuclei) at >=2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · droplet nuclei; anaerobic cultures Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -3.4 [-14.66, 7.86] | 1 study · 40 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · CHX 0.12% vs CPC+Zn+F; operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -30 [-85.86, 25.86] | 1 study · 30 participants | Very low |
Tempered chlorhexidine vs Non-tempered chlorhexidine Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · combined operator, assistant and patient level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -10.8 [-15.15, -6.45] | 1 study · 20 participants | Very low |
Chlorhexidine 0.2% socket irrigation (monoject syringe) vs Chlorhexidine 0.2% mouthrinse Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | RR 0.26 [0.09, 0.71] | 1 study · 95 participants | Ungraded |
Chlorhexidine (CHX) vs Water (distilled) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · patient level (pharynx; not analysed) Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | Bay 1993 compared 0.12% CHX with distilled water (30-second rinse) and evaluated the outcome at patient level (Andersen's level 2, oropharynx); the data were not included in the meta-analysis. No pooled estimate or… | 1 study | Ungraded |
Chlorhexidine (CHX) vs No rinsing Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | At operator level, because of high heterogeneity (I2 = 89%), which could not be explained, the results were not meta-analysed (2 studies, 60 participants; Feres 2010, Retamal-Valdes 2017). No pooled estimate or GRADE… | 2 studies · 60 participants | Ungraded |
Chlorhexidine gel (0.2%, intrasocket) vs Chlorhexidine rinse (0.12%) Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | RR 0.74 [0.46, 1.20] | 2 studies · 383 participants | Low |
Chlorhexidine (CHX) vs Ozonated water Reduction in level of contamination by particles <=5 um (droplet nuclei) at >=2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · droplet nuclei; aerobic cultures Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -12.3 [-27.12, 2.52] | 1 study · 40 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · tempered CHX vs tempered CPC; assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -0.2 [-6.3, 5.9] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · cold CHX vs tempered CPC; operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD 13.6 [6.73, 20.47] | 1 study · 20 participants | Very low |
Chlorhexidine gel 1% vs Chlorhexidine gel 0.2% Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | RR 0.55 [0.15, 2.05] | 1 study · 88 participants | Ungraded |
Chlorhexidine (CHX) vs Water (distilled) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | At assistant level, because of high heterogeneity (I2 = 96%), the results were not meta-analysed (4 studies, 136 participants). No pooled estimate or GRADE rating. | 4 studies · 136 participants | Ungraded |
Chlorhexidine (CHX) vs Povidone iodine Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level; aerobic cultures Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -10.75 [-26.24, 4.74] | 2 studies · 52 participants | Very low |
Full-mouth disinfection (FMD): scaling/root planing (subgingival instrumentation) of all quadrants within 24 hours plus adjunctive antiseptic (chlorhexidine) treatments (rinsing, pocket irrigation, tongue/tonsil brushing) vs Quadrant scaling and root planing (control): SRP of each quadrant in separate sessions at least one week apart Change in clinical attachment level (CAL) · Adults with a clinical diagnosis of (chronic) periodontitis (1999 classification); studies of aggressive… · 6 to 8 months (SoF); similar at 3 to 4 months Full‐mouth treatment modalities (within 24 hours) for periodontitis in adults (2022) · Cochrane | MD 0.07 [-0.11, 0.24] | 6 studies · 214 participants | Low |
Chlorhexidine (CHX) vs Essential oils/herbal mouthwash Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -12.21 [-15.58, -8.83] | 3 studies · 76 participants | Low |
Chlorhexidine gel (0.2%, intrasocket) vs Placebo or no treatment Presence of dry socket · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars) · Follow-up: median 7 days Local interventions for the management of alveolar osteitis (dry socket) (2022) · Cochrane | OR 0.44 [0.27, 0.71] | 7 studies · 753 participants | Moderate |
Chlorhexidine (CHX) vs Essential oils/herbal mouthwash Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -23.09 [-34.4, -11.78] | 3 studies · 76 participants | Low |
Tempered chlorhexidine vs Non-tempered chlorhexidine Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · assistant level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -17.6 [-23.7, -11.5] | 1 study · 20 participants | Very low |
Chlorhexidine (CHX) vs Cetylpyridinium chloride (CPC) Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · cold CHX vs cold CPC; operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD 4.43 [-2.27, 11.13] | 2 studies · 50 participants | Very low |
Tempered chlorhexidine vs Non-tempered chlorhexidine Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them · operator level Preprocedural mouth rinses for preventing transmission of infectious diseases through aerosols in dental… (2022) · Cochrane | MD -15.8 [-22.67, -8.93] | 1 study · 20 participants | Very low |
Chlorhexidine vs Nanosil (nanosilver) Incidence of VAP · Critically ill patients receiving mechanical ventilation in ICU Oral hygiene care for critically ill patients to prevent ventilator‐associated pneumonia (2020) · Cochrane | Chlorhexidine versus Nanosil (Khaky 2018): some evidence of a benefit for Nanosil; single study, not replicated, interpret with caution. | 1 study | Ungraded |
Chlorhexidine vs Potassium permanganate Incidence of VAP · Critically ill patients receiving mechanical ventilation in ICU Oral hygiene care for critically ill patients to prevent ventilator‐associated pneumonia (2020) · Cochrane | RR 0.87 [0.50, 1.52] | 2 studies | Ungraded |
Chlorhexidine vs Potassium permanganate Mortality · Critically ill patients receiving mechanical ventilation in ICU Oral hygiene care for critically ill patients to prevent ventilator‐associated pneumonia (2020) · Cochrane | RR 1.11 [0.89, 1.38] | 2 studies | Ungraded |
Antimicrobial coolant A (chlorhexidine) vs Antimicrobial coolant B (povidone iodine) Reduction in level of contamination in aerosols (CFU): chlorhexidine vs povidone iodine coolant during ultrasonic scaling · People undergoing aerosol-generating procedures (AGPs) in a dental setting Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious… (2020) · Cochrane | MD -59.30 [-64.16, -54.44] | 1 study · 20 participants | Very low |
Antimicrobial coolant A (chlorhexidine) vs Antimicrobial coolant B (cinnamon extract) Reduction in level of contamination in aerosols (CFU): chlorhexidine vs cinnamon extract coolant during ultrasonic scaling · People undergoing aerosol-generating procedures (AGPs) in a dental setting Interventions to reduce contaminated aerosols produced during dental procedures for preventing infectious… (2020) · Cochrane | MD -11.90 [-35.88, 12.08] | 1 study · 40 participants | Very low |