Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · All outcomes

No studies found 429 · 11%GRADE not reported 2,657 · 67.8%Very low 512 · 13.1%Low 219 · 5.6%Moderate 80 · 2%High 20 · 0.5%

Dental caries vs Caries-free status

Beta diversity and community composition · Participants in oral 16S rRNA caries microbiome studies

Beta-diversity matrices showed statistically significant ADONIS results, while clustering by study and 16S region was also observed; no pooled effect estimate was reported.

1 finding from 1 review

Chlorhexidine 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
1 finding from 1 review

Flowable resin composite vs Fluoride-releasing resin-based sealant

Retention of sealant (complete or partial retention) · Children who were regular dental attenders with caries-free first or second primary molars (public health service clinic, Brazil)
1 finding from 1 review
  • Sealants for preventing dental caries in primary teeth 2022 · Cochrane All outcomes
    12 months
    Effect estimate not calculable. All sealants were completely or partially retained; 40 (1 RCT). Flowable composite: 39/40 completely retained (1 partially lost) at 6 months; resin-based: 33 completely and 7 partially…
    1 study · 40 participants
    Low

Periodontal treatment: scaling and root planing (SRP) plus advice vs Community care: advice only

Serum high-sensitivity C-reactive protein (hs-CRP) · Patients with cardiovascular disease and chronic periodontitis
1 finding from 1 review

Glass ionomer-based sealant vs No sealant (control/no treatment)

Dental caries increment, DMFT/dmft (whole-tooth level) · Children with caries-free primary first molars (with or without caries on other teeth), aged 1-5 years (paediatric clinic/dental school,…
1 finding from 1 review
  • Sealants for preventing dental caries in primary teeth 2022 · Cochrane All outcomes
    12 months
    Joshi 2019: dmft 8.43 (SD 5.84) with sealant vs 10.05 (SD 6.16) with no sealant at 12 months (caries threshold uncertain); Chadwick 2005: no significant difference in caries increment on occlusal surfaces, no summary…
    2 studies
    GRADE not reported

Resin-based fissure sealant vs Fluoride varnish

Caries incidence of first permanent molars (FPMs) · Schoolchildren aged 6-12 years with sound occlusal surfaces of the first permanent molars

Pit and fissure sealant and fluoride varnish showed no statistically significant difference in caries incidence of first permanent molars at 24 months (RR 0.65, 95% CI 0.31 to 1.38; I2=89%; not GRADE-rated).

1 finding from 1 review

Study-specific random forest classifier vs Caries versus healthy disease-state labels

Study-specific disease-state discrimination · Oral microbiome samples in 15 case-controlled studies

Bong-Soo 2017, Zhu 2018, and Jiang 2019 had mean AUC scores over 0.75; exact study-specific AUCs were not reported in text or readable figure labels.

1 finding from 1 review

Glass ionomer-based sealant vs Resin-based sealant

Adverse events · 'Healthy' children with caries-free second primary molars, aged 3-5 years (schools and kindergartens, India and China)
1 finding from 1 review
  • 1 study reported adverse events as some discomfort such as nausea; 1 child experienced a strong gag reflex following the glass ionomer-based sealant while 8 children reported feeling uncomfortable after the fluoride…
    1 study · 100 participants
    Very low

ARP with demineralised bone matrix, single particle size vs ARP with demineralised bone matrix, multiple particle size

Complications (e.g. discomfort, pain and swelling) · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring extraction of one or more…
1 finding from 1 review

ARP with alloplast plus barrier membrane vs ARP with alloplast without membrane

Changes in vertical height of alveolar ridge (mm) · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring extraction of one or more…

It is very uncertain whether ARP with alloplast plus barrier membrane changes changes in vertical height of alveolar ridge (mm) compared with ARP with alloplast without membrane (very low certainty).

1 finding from 1 review