Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

10 questions · 12 findings · 2 reviews · Oral Health

No studies found 0 · 0%GRADE not reported 8 · 66.7%Very low 4 · 33.3%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Fluoride in dentifrice vs placebo

Caries increment, surface index D(M)FS · Children or adolescents

In the illustrative network meta-regression the SMD for caries increment differed between fluoride in dentifrice and placebo at every displayed randomization year; certainty was not graded.

1 finding from 1 review

Fluoride in dentifrice vs no treatment

Caries increment, surface index D(M)FS · Children or adolescents

In the illustrative network meta-regression the SMD for caries increment differed between fluoride in dentifrice and no treatment at every displayed randomization year; certainty was not graded.

1 finding from 1 review

Fluoride in dentifrice vs no treatment

Caries increment in permanent teeth · Children or adolescents

The NMR reported a difference between fluoride in dentifrice and no treatment at every displayed randomisation year; no GRADE assessment was reported.

1 finding from 1 review

Fluoride-free nano-/micro-hydroxyapatite (nHA) dentifrice vs Control (regular fluoride) dentifrice

Caries lesion initiation/progression (ICDAS score, laser fluorescence/DIAGNOdent, photographic pixels, enamel acid resistance) · Patients (children and adults, age 3-40 years) with initial enamel caries lesions (non-orthodontic and orthodontic)

No meta-analysis was possible for the 5 in vivo RCTs (high heterogeneity); narratively nHA showed generally no significant difference versus fluoridated dentifrice, and the evidence was not graded (ungraded).

1 finding from 1 review
  • Efficacy of nano-hydroxyapatite on caries prevention-a systematic review and meta-analysis. 2022 All outcomes
    Median follow-up 6 months (range 6-12 months) · In vivo (clinical); non-orthodontic and orthodontic patients
    No meta-analysis was performed for the in vivo studies owing to high heterogeneity (population, control group, outcomes, follow-up periods, risk of bias) and differing statistical designs (e.g., non-inferiority);…
    5 studies · 420 participants
    GRADE not reported

Fluoride-free nano-hydroxyapatite (nHA) dentifrice/paste vs Sodium fluoride (control) toothpaste

Mineral loss (transversal microradiography) · Enamel/dentin specimens with initial caries lesions (or sound surfaces) in intraoral (in situ) appliances worn by patients

Under demineralizing conditions, nHA allowed significantly more enamel demineralization than NaF (MD 1625, 95% CI 553 to 2697; very low certainty).

2 findings from 1 review

Nano-hydroxyapatite (nHA) dentifrice/paste (fluoride-free or fluoridated) vs nHA-free / fluoride-free (negative) control

Mineral loss (transversal microradiography) · Enamel/dentin specimens with initial caries lesions (or sound surfaces) in intraoral (in situ) appliances worn by patients

Under remineralizing conditions, nHA produced significantly more remineralization than the negative control (MD 350, 95% CI 179 to 521; very low certainty).

2 findings from 1 review

Fluoride gel (topically applied; operator- or self-applied; any fluoride agent/concentration; frequency at least once a year) vs Fluoride in dentifrice

Caries increment, surface index D(M)FS · Children or adolescents

The illustrative network meta-regression estimated an SMD for caries increment for fluoride in gel versus fluoride in dentifrice across randomization year; the review did not state whether the difference was significant and certainty was not graded.

1 finding from 1 review

Fluoride in rinse vs Fluoride in dentifrice

Caries increment, surface index D(M)FS · Children or adolescents

The illustrative network meta-regression estimated an SMD for caries increment for fluoride in rinse versus fluoride in dentifrice across randomization year; the review did not state whether the difference was significant and certainty was not graded.

1 finding from 1 review

Fluoride varnish vs Fluoride in dentifrice

Caries increment, surface index D(M)FS · Children or adolescents

The illustrative network meta-regression estimated an SMD for caries increment for fluoride in varnish versus fluoride in dentifrice across randomization year; the review did not state whether the difference was significant and certainty was not graded.

1 finding from 1 review