Gap finder

Search review questions

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.

Population

Intervention or exposure

Comparison

Outcome

Any field or review title

Field or topic

Source

Review versions

2 questions in 1 reviews · cluster CL0042

current versions

No studies 0 · 0%Ungraded 2 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%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
Total daily fluoride intake (TDFI) and daily fluoride intake from toothpaste Correlation between daily urinary fluoride excretion (DUFE) and fluoride intake · Children and adults with 24-h urinary fluoride monitoring (9 studies reporting both intake and urine; Table 2) · 24-h urine collection, High-fluoride-area data from Idowu et al. [46,47] excluded Fluoride Intake Through Dental Care Products: A Systematic Review. (2022)	R2 (coefficient of determination) <0.07	9 studies	Ungraded
Daily fluoride intake from toothpaste vs Child age (across age groups) Association between age and daily fluoride intake from toothpaste · Children using fluoride toothpaste (all tap-water fluoride categories) · All tap-water fluoride categories; Levy et al. [20,22,24] data excluded Fluoride Intake Through Dental Care Products: A Systematic Review. (2022)	R2 (coefficient of determination) <0.14	NR	Ungraded