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What do systematic reviews say?

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Evidence found and GRADE certainty

1,127 questions · 1,590 findings · 132 reviews · All outcomes

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No studies found 189 · 11.9%GRADE not reported 1,166 · 73.3%Very low 130 · 8.2%Low 69 · 4.3%Moderate 25 · 1.6%High 11 · 0.7%

Any orthodontic and/or surgical treatment for Angle Class III malocclusion vs no intervention or another intervention

Correction of prominent lower front teeth / effectiveness of treatment (planned primary outcome) · Adults (16 years of age or older) with an Angle Class III malocclusion (prominent lower front teeth); people with syndromes, clefts or…

The review found no eligible studies for this question.

1 finding from 1 review
  • Treatments for adults with prominent lower front teeth 2012 · Cochrane All outcomes
    No included study measured the planned primary outcome. Discussion: 'The primary outcome proposed for this review was to evaluate the effectiveness of treatments for prognathism, but none of the studies conclusively…
    Studies not reported
    No studies found

Longer follow-up vs Shorter follow-up

Annual increment in DMFS (D3) · Children and adolescents with permanent dentition

Not adjusted meta-regression beta was 0.43 per additional follow-up year.

5 findings from 1 review
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Not adjusted
    Meta-regression beta per year of follow-up 0.43 [0.04, 0.83]
    22 studies · 11300 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings and age at baseline
    Meta-regression beta per year of follow-up 0.64 [0.31, 0.96]
    22 studies · 11300 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings age at baseline and baseline caries experience
    Meta-regression beta per year of follow-up 0.37 [0.04, 0.70]
    22 studies · 11300 participants
    GRADE not reported
Show 2 more findings
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-4 including relevance of evidence and risk of bias
    Meta-regression beta per year of follow-up 0.46 [0.08, 0.83]
    22 studies · 11300 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-3 including decade and preventive intervention
    Meta-regression beta per year of follow-up 0.36 [-0.02, 0.73]
    22 studies · 11300 participants
    GRADE not reported

Longer follow-up vs Shorter follow-up

Annual increment in DMFT (D3) · Children and adolescents with permanent dentition

Not adjusted meta-regression beta was 0.18 per additional follow-up year.

5 findings from 1 review
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Not adjusted
    Meta-regression beta per year of follow-up 0.18 [-0.04, 0.40]
    13 studies · 24753 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings and age at baseline
    Meta-regression beta per year of follow-up 0.18 [0.02, 0.35]
    13 studies · 24753 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings age at baseline and baseline caries experience
    Meta-regression beta per year of follow-up 0.23 [0.06, 0.40]
    13 studies · 24753 participants
    GRADE not reported
Show 2 more findings
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-4 including relevance of evidence and risk of bias
    Meta-regression beta per year of follow-up -0.04 [-0.34, 0.26]
    13 studies · 24753 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-3 including decade and preventive intervention
    Meta-regression beta per year of follow-up 0.07 [-0.24, 0.39]
    13 studies · 24753 participants
    GRADE not reported

Longer follow-up vs Shorter follow-up

Caries incidence rate per person-year at risk (D3) · Children and adolescents with permanent dentition

Adjusted for groups 1-4 including relevance of evidence and risk of bias meta-regression beta was -0.02 per additional follow-up year.

5 findings from 1 review
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-4 including relevance of evidence and risk of bias
    Meta-regression beta per year of follow-up -0.02 [-0.05, 0.01]
    15 studies · 10768 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings age at baseline and baseline caries experience
    Meta-regression beta per year of follow-up 0.00 [-0.00, 0.01]
    15 studies · 10768 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for bitewings and age at baseline
    Meta-regression beta per year of follow-up 0.00 [-0.00, 0.01]
    15 studies · 10768 participants
    GRADE not reported
Show 2 more findings
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Adjusted for groups 1-3 including decade and preventive intervention
    Meta-regression beta per year of follow-up -0.00 [-0.02, 0.02]
    15 studies · 10768 participants
    GRADE not reported
  • Caries Progression Rates Revisited: A Systematic Review. 2019 All outcomes
    Per additional year of follow-up · Western or comparable populations · Not adjusted
    Meta-regression beta per year of follow-up -0.00 [-0.01, 0.01]
    15 studies · 10768 participants
    GRADE not reported

Lower unemployment rate vs Higher unemployment rate (low <=5% / medium >5-10% / high >10%)

Caries experience (mean DMFT) · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)

Mean DMFT tended to increase with unemployment rate (low 1.23, medium 2.08, high 2.38; ANOVA p<.05); descriptive country-level means only, not meta-analyzed or GRADE-rated.

3 findings from 1 review

Lower unemployment rate vs Higher unemployment rate (low <=5% / medium >5-10% / high >10%)

Odds of higher caries (DMFT) category · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)

Unemployment rate was not independently associated with DMFT category in the adjusted model (OR 0.99, 95% CI 0.44 to 2.23); not GRADE-rated.

1 finding from 1 review

Low‐level laser therapy vs Low-level laser therapy (LLLT) + calcium hydroxide

Radiological failure · Children with extensive decay involving the dental pulp in primary teeth

Low-level laser therapy (LLLT) showed no clear difference in radiological failure compared with low-level laser therapy (LLLT) + calcium hydroxide; GRADE not reported.

1 finding from 1 review

Laminar air flow with HEPA filter vs Without laminar flow or filter

Reduction in level of contamination in aerosols (CFU per cubic feet/min/patient) using Reyniers slit sampler 30 inches (76 cm) from floor · People undergoing aerosol-generating procedures (AGPs) in a dental setting

It is very uncertain whether laminar air flow with HEPA filter changes reduction in level of contamination in aerosols (CFU per cubic… compared with without laminar flow or filter (very low certainty).

1 finding from 1 review

Laminar air flow with HEPA filter vs Without laminar flow or filter

Reduction in level of contamination in aerosols (CFU per cubic feet/min/patient) using Andersen cascade sampler 20-30 cm from mouth · People undergoing aerosol-generating procedures (AGPs) in a dental setting

It is very uncertain whether laminar air flow with HEPA filter changes reduction in level of contamination in aerosols (CFU per cubic… compared with without laminar flow or filter (very low certainty).

1 finding from 1 review

Partial pulpotomy with one-unit longer follow-up vs Partial pulpotomy with one-unit shorter follow-up

Overall success (composite of clinical and radiographic success) · Adults aged 18 years or older with mature permanent teeth and carious pulp exposure

In the high-risk-study-excluded sensitivity meta-regression, longer follow-up was associated with lower success.

1 finding from 1 review

Bonded Minne appliance (slow maxillary expansion) vs Banded Minne appliance (slow maxillary expansion)

Stability of crossbite correction (relapse of canine expansion) · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
1 finding from 1 review

Bonded Minne appliance (slow maxillary expansion) vs Banded Minne appliance (slow maxillary expansion)

Stability of crossbite correction (relapse of molar expansion) · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
1 finding from 1 review

Low socioeconomic status and family financial stress vs Higher socioeconomic status and lower stress

Salivary cortisol, cariogenic bacterial load and dental caries · Kindergarten-age children

In one cross-sectional study of children, low socioeconomic status, higher basal salivary cortisol and higher cariogenic bacterial counts were each independently associated with higher dental caries risk; not pooled (ungraded).

1 finding from 1 review

Hyperbaric oxygen therapy (HBO) following extractions vs penicillin G

Incidence of ORN · Adults with head and neck cancer undergoing curative or adjuvant radiotherapy (at risk of osteoradionecrosis of the jaws)

It is very uncertain whether hyperbaric oxygen therapy (HBO) following extractions changes incidence of ORN compared with perioperative antibiotic prophylaxis (penicillin G) following… (very low certainty).

1 finding from 1 review

Hyperbaric oxygen therapy (HBO) following extractions vs penicillin G

Adverse effects · Adults with head and neck cancer undergoing curative or adjuvant radiotherapy (at risk of osteoradionecrosis of the jaws)
1 finding from 1 review

High maternal allostatic load (chronic stress) and low socioeconomic status vs Lower maternal allostatic load

Dental caries in children · Mother-child pairs

In one cross-sectional study, higher maternal allostatic load was associated with child dental caries experience and with health-related maternal care-taking behaviours; not pooled (ungraded).

1 finding from 1 review

Populations with low socioeconomic status (>=22.4% of the population with low SES) vs Populations with higher socioeconomic status (<22.4% of the population with low SES)

Caries experience (mean DMFT) · Adults aged 19-60 years

Populations with a higher proportion of people with low socioeconomic status had higher caries experience (pooled DMFT 15.99 vs 5.50), and meta-regression associated low SES with higher DMFT (about 10.35 more DMFT per unit; p=0.050); ungraded observational evidence.

5 findings from 1 review
Show 2 more findings