Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy
In one RCT, preformed metal crowns had an annual failure rate of 2.5% after 2 years.
1 finding from 1 review
Negative oral-health impact on daily performance (OIDP or Child-OIDP) · Adolescents (10-19 years)
In the Child-OIDP subgroup, dental caries is associated with a worse oral-health impact: PR 1.66 (95% CI 1.19 to 2.31) from 6 studies (I2=96%); ungraded, and not statistically different from the OIDP subgroup (p=0.96).
5 findings from 1 review
Impact of dental caries on the quality of life of adolescents: A systematic review and meta-analysis. 2025 All outcomesCross-sectional (concurrent exposure and outcome); oral impacts recalled over the prior 6 months · School-based (17/20 studies), plus household and secondary-data surveys; low-, middle- and high-income countries (Brazil, Thailand, Tanzania, Saudi Arabia, Sri Lanka, Zambia, Iran, Serbia, Nepal, India, South Africa, China) · Instrument subgroup: Child-OIDP
PR 1.66 [1.19, 2.31]
6 studies
GRADE not reported
Impact of dental caries on the quality of life of adolescents: A systematic review and meta-analysis. 2025 All outcomesCross-sectional (concurrent exposure and outcome); oral impacts recalled over the prior 6 months · School-based (17/20 studies), plus household and secondary-data surveys; low-, middle- and high-income countries (Brazil, Thailand, Tanzania, Saudi Arabia, Sri Lanka, Zambia, Iran, Serbia, Nepal, India, South Africa, China) · Instrument subgroup: OIDP (all 3 studies)
PR 1.68 [0.89, 3.17]
3 studies
GRADE not reported
Impact of dental caries on the quality of life of adolescents: A systematic review and meta-analysis. 2025 All outcomesCross-sectional (concurrent exposure and outcome); oral impacts recalled over the prior 6 months · School-based (17/20 studies), plus household and secondary-data surveys; low-, middle- and high-income countries (Brazil, Thailand, Tanzania, Saudi Arabia, Sri Lanka, Zambia, Iran, Serbia, Nepal, India, South Africa, China) · Instrument subgroup: OIDP, sensitivity analysis excluding Krisdapong et al.
PR 1.21 [1.15, 1.28]
2 studies
GRADE not reported
Show 2 more findings
Impact of dental caries on the quality of life of adolescents: A systematic review and meta-analysis. 2025 All outcomesCross-sectional (concurrent exposure and outcome); oral impacts recalled over the prior 6 months · School-based (17/20 studies), plus household and secondary-data surveys; low-, middle- and high-income countries (Brazil, Thailand, Tanzania, Saudi Arabia, Sri Lanka, Zambia, Iran, Serbia, Nepal, India, South Africa, China) · Overall (all meta-analyzed studies pooled; both instruments and both caries definitions)
PR 1.52 [1.15, 2.01]
9 studies
GRADE not reported
Impact of dental caries on the quality of life of adolescents: A systematic review and meta-analysis. 2025 All outcomesCross-sectional (concurrent exposure and outcome); oral impacts recalled over the prior 6 months · School-based (17/20 studies), plus household and secondary-data surveys; low-, middle- and high-income countries (Brazil, Thailand, Tanzania, Saudi Arabia, Sri Lanka, Zambia, Iran, Serbia, Nepal, India, South Africa, China) · Caries-definition subgroup: presence of dental caries
PR 1.19 [0.77, 1.84]
3 studies
GRADE not reported
Oral health-related quality of life · people aged 60 years and older living in the community
No statistically significant difference in OHRQoL was reported by edentulism prevalence.
1 finding from 1 review
Oral health-related quality of life · people aged 60 years and older living in the community
No statistically significant difference in OHRQoL was reported by edentulism prevalence.
1 finding from 1 review
Treatment failure (annual failure rate) · Children with carious primary molars treated by pulpotomy (vital pulp therapy)
Preformed metal crowns had a low annual failure rate (2.5%) in primary molars after pulpotomy, but the evidence is of low quality (single high-risk-of-bias split-mouth RCT; not GRADE-rated).
2 findings from 1 review
Oral health-related quality of life · people aged 60 years and older living in the community
The review reported higher OHRQoL in the low than high dental-caries-prevalence category.
1 finding from 1 review
71.40 [64.16, 78.63]
Studies not reported
GRADE not reported
Poor oral health-related quality of life (OHRQoL) · Children aged 3-12 years
Periodontal disease was associated with higher odds of poor OHRQoL (OR 1.15, 95% CI 1.12-1.18; 3 studies; no heterogeneity; ungraded).
1 finding from 1 review
OR 1.15 [1.12, 1.18]
3 studies
GRADE not reported
Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)
In the mandible, presence of the third molar increases odds of spontaneous space closure (OR 2.28; low certainty).
1 finding from 1 review
Oral health-related quality of life · people aged 60 years and older living in the community
No statistically significant difference in OHRQoL was reported by periodontal-disease prevalence.
1 finding from 1 review
Lacunar stroke · European-ancestry adults
Genetically predicted periodontitis was associated with modestly higher odds of lacunar stroke (OR 1.24); ungraded MR, though the FDR-adjusted P was 0.064 for the primary IVW-FE method (ML-adjusted P 0.037).
1 finding from 1 review
OR 1.24 [1.03, 1.49]
Studies not reported
GRADE not reported
Oral health-related quality of life · people aged 60 years and older living in the community
No statistically significant difference in OHRQoL was reported by periodontal-disease prevalence.
1 finding from 1 review
Lacunar stroke · European-ancestry adults
Genetically predicted dental caries showed no significant causal association with lacunar stroke (ungraded MR).
1 finding from 1 review
OR 0.92 [0.69, 1.23]
Studies not reported
GRADE not reported
Tooth decay-free children · Alaska children aged 5 to 18 years
The robust prevention PDHA model was projected to yield more than 50% tooth decay-free children versus 8% with other PDHA models, without a GRADE rating.
1 finding from 1 review
Restoration failure · Children with carious primary teeth
No comparative effect estimate was reported; the review reports this three-arm comparison but tabulates only compomer failure.
1 finding from 1 review
Discomfort during treatment · Children (3-10 years) with dentine caries in primary molars
The reported estimate for treatment discomfort with the Hall Technique versus conventional restorations was inconclusive (ungraded).
1 finding from 1 review
RR 1.67 [0.65, 4.25]
2 studies
GRADE not reported
Adverse events: gingival bleeding · Children (3-10 years) with dentine caries in primary molars
The reported estimate for gingival bleeding with preformed metal crowns was inconclusive (ungraded).
1 finding from 1 review
RR 1.09 [0.42, 2.86]
2 studies
GRADE not reported
Restoration failure · Children (3-10 years) with dentine caries in primary molars
The Hall Technique was reported to reduce restoration and major failure versus conventional restorations (3% vs 37%; ungraded).
1 finding from 1 review
3% (HT) vs 37% (control)
1 study
GRADE not reported
Enamel demineralization (DIAGNOdent score) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)
Adhesive precoated flash-free brackets showed no demineralization difference, with certainty not graded.
1 finding from 1 review
Intergroup evaluation showed that there were no statistically significant differences in demineralization measurements between all sides of the conventional and flash-free brackets at all the time intervals (p >0.05).
1 study · 30 participants
GRADE not reported
Pulp necrosis · Vital teeth
One study reported a 13% incidence in teeth with pre-operative caries fillings or crowns.
2 findings from 1 review
Proportion 13
1 study
GRADE not reported
Proportion 5
1 study
GRADE not reported
Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…
Pre-operative radiotherapy (plus surgery) showed no clear difference in total mortality compared with surgery alone; GRADE not reported.
1 finding from 1 review
HR 0.83 [0.64, 1.07]
1 study
GRADE not reported