Evidence Gaps

What do systematic reviews say?

1 questions · 3 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 2 · 66.7%Very low 0 · 0%Low 1 · 33.3%Moderate 0 · 0%High 0 · 0%

Secondary caries · People with permanent or adult posterior teeth requiring restoration (parallel-group trials involved children aged 6 to 12 years)

Direct composite resin restoration showed no clear difference in secondary caries compared with amalgam restoration; GRADE not reported.

3 findings from 1 review

Direct composite resin fillings versus amalgam fillings for permanent posterior teeth 2021 · Cochrane All outcomes
Follow-up >= 3 years · Parallel-group and split-mouth trials combined
RR 1.93 [0.98, 3.80]
7 studies
GRADE not reported
Direct composite resin fillings versus amalgam fillings for permanent posterior teeth 2021 · Cochrane All outcomes
Follow-up >= 3 years · Split-mouth trials
RR 1.30 [0.34, 4.97]
5 studies
GRADE not reported
Direct composite resin fillings versus amalgam fillings for permanent posterior teeth 2021 · Cochrane All outcomes
Follow-up: 5 to 7 years
RR 2.14 [1.67, 2.74]
2 studies · 921 participants
Low