Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · All outcomes

No studies found 429 · 11%GRADE not reported 2,657 · 67.8%Very low 512 · 13.1%Low 219 · 5.6%Moderate 80 · 2%High 20 · 0.5%

Pre-radiotherapy extraction of healthy molar teeth vs Conservative treatment (leaving the teeth in place during radiotherapy, with oral health education and disease prevention: oral hygiene, fluoride, diet advice)

Development of post-radiotherapy dental complications (caries, fractured teeth, periapical infection, periodontal disease, osteoradionecrosis) · Patients diagnosed with head and neck cancer planned to undergo any type of radiotherapy (external beam, intensity modulated,…

The review found no eligible studies for this question.

1 finding from 1 review

Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation

Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials enrolled adults

The review found no eligible studies for this question.

1 finding from 1 review

Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation

Completion of dental treatment · People (older than four years) classified as having gagging that interfered with dental treatment; included trials enrolled adults

It is very uncertain whether acupressure at P6 point with sea band plus sedation changes completion of dental procedure compared with sham (dummy) acupressure with sedation (very low certainty).

1 finding from 1 review

Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation

Reduction in gagging (patient-reported) · People (older than four years) classified as having gagging that interfered with dental treatment; included trials enrolled adults

It is very uncertain whether acupressure at P6 point with sea band plus sedation changes reduction in gagging (patient-reported) compared with sham (dummy) acupressure with sedation (very low certainty).

1 finding from 1 review

Pre-radiotherapy extraction of diseased molar teeth vs Conservative treatment (restoration of the teeth and leaving them in place during radiotherapy, with oral health education and disease prevention: oral hygiene, fluoride, diet advice)

Development of post-radiotherapy dental complications (caries, fractured teeth, periapical infection, periodontal disease, osteoradionecrosis) · Patients diagnosed with head and neck cancer planned to undergo any type of radiotherapy (external beam, intensity modulated,…

The review found no eligible studies for this question.

1 finding from 1 review

Pre-radiotherapy extraction of diseased molar teeth vs Conservative treatment (restoration of the teeth and leaving them in place during radiotherapy, with oral health education and disease prevention: oral hygiene, fluoride, diet advice)

Delay in start of radiation treatment · Patients diagnosed with head and neck cancer planned to undergo any type of radiotherapy (external beam, intensity modulated,…

The review found no eligible studies for this question.

1 finding from 1 review

Pre-radiotherapy extraction of diseased molar teeth vs Conservative treatment (restoration of the teeth and leaving them in place during radiotherapy, with oral health education and disease prevention: oral hygiene, fluoride, diet advice)

Patients' quality of life · Patients diagnosed with head and neck cancer planned to undergo any type of radiotherapy (external beam, intensity modulated,…

The review found no eligible studies for this question.

1 finding from 1 review

Pre-radiotherapy extraction of diseased molar teeth vs Conservative treatment (restoration of the teeth and leaving them in place during radiotherapy, with oral health education and disease prevention: oral hygiene, fluoride, diet advice)

Overall survival · Patients diagnosed with head and neck cancer planned to undergo any type of radiotherapy (external beam, intensity modulated,…

The review found no eligible studies for this question.

1 finding from 1 review

Depression and social isolation (psychosocial strain) vs No depression or lower psychosocial strain

Antibody titres to periodontal pathogens · Adults with periodontitis

In one case-control study, depression as a marker of social isolation was associated with elevated antibody titres to periodontal pathogens at baseline and 1-year follow-up; not pooled (ungraded).

1 finding from 1 review

Country-level edentulism prevalence (Global Burden of Disease) vs Low vs high edentulism prevalence

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly by country-level edentulism prevalence; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Chlorhexidine rinse (0.12% and 0.2%, pre- and post-extraction) vs placebo or no treatment

Adverse events · Adults (>18 years) having permanent tooth extraction (predominantly mandibular third molars)
1 finding from 1 review
  • Local interventions for the management of alveolar osteitis (dry socket) 2022 · Cochrane All outcomes
    Follow-up: median 7 days
    3 trials reported no adverse events. 1 study reported adverse events (alterations in taste, bad taste, staining) in 24/62 in chlorhexidine group versus 0/40 in placebo group, Peto OR = 8.42 (95% CI 3.31 to 21.39). A…
    6 studies
    GRADE not reported

Integrated Chinese and Western medicine (incl. oral prednisone) vs Western medicine (incl. oral prednisone)

Clinical score · People with symptomatic, biopsy-confirmed oral lichen planus (OLP); not concurrently receiving other OLP treatment
1 finding from 1 review

Country-level dental caries prevalence (Global Burden of Disease) vs Low vs high dental caries prevalence

Oral health-related quality of life · people aged 60 years and older living in the community

Lower country-level dental caries prevalence was associated with better OHRQoL (low-prevalence pooled mean 81.5, 95% CI 76.5 to 86.6, higher than high-prevalence countries); statistically significant (ungraded).

1 finding from 1 review

Genome-wide common variants (additive dosage; present-study GWAS) vs Genome-wide significance threshold (P<5E-8)

Dental caries - genome-wide-significant loci · Japanese adults (present-study cohort: 30,859 dental caries cases / 14,666 controls)

The present Japanese GWAS found no genome-wide-significant loci for dental caries (top suggestive rs140784657); ungraded.

1 finding from 1 review
  • Genome-wide association meta-analysis identifies two novel loci associated with dental caries. 2024 All outcomes
    Lifelong (germline genotype) · Population-based genetic association study (Japanese direct-to-consumer genetic testing cohort) · Present-study GWAS (Japanese)
    In the present Japanese GWAS, no loci reached genome-wide significance (P<5E-8) for dental caries; several loci reached the suggestive level (P<1E-5). Top-associated variant rs140784657 (intergenic). All 47 lead…
    1 study · 45525 participants
    GRADE not reported

Subperiosteal prepared (SPP) wound closure after tooth extraction vs Epiperiosteal prepared (EPP) wound closure after tooth extraction

MRONJ after tooth extraction (incidence proportion) · People on antiresorptive treatment undergoing tooth extraction (at risk of MRONJ)

Subperiosteal prepared (SPP) wound closure after tooth extraction showed no clear difference in MRONJ after tooth extraction (incidence proportion) compared with epiperiosteal prepared (EPP) wound closure after tooth extraction (low certainty).

1 finding from 1 review

Prefabricated zirconia crowns (e.g., NuSmile, Zirkiz, Kinder Krown) vs Other crowns/restorations (stainless steel crowns, pre-veneered SSC, resin composite strip crowns, glass-fiber composite crowns)

Recurrent caries (crowns free of recurrent caries) · Children with primary (deciduous) teeth requiring full-coverage crown restoration

Recurrent caries did not differ between zirconia crowns and other restorations at 6 months (RR 1.00, 95% CI 0.97 to 1.03; 2 studies; not GRADE-rated).

2 findings from 1 review

Prefabricated zirconia crowns (e.g., NuSmile, Zirkiz, Kinder Krown) vs Other crowns/restorations (stainless steel crowns, pre-veneered SSC, resin composite strip crowns, glass-fiber composite crowns)

Crown retention · Children with primary (deciduous) teeth requiring full-coverage crown restoration

Zirconia crowns showed no significant difference in crown retention versus other restorations at 6 months (RR 1.02, 95% CI 0.94 to 1.11; 3 studies; not GRADE-rated).

2 findings from 1 review

Country-level periodontal disease prevalence (Global Burden of Disease) vs Low vs high periodontal disease prevalence

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly by country-level periodontal disease prevalence; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Prednisone (oral, commencing 25 mg with phased dose reduction over 2 months) vs placebo

Time to resolution of first ulcer (days) · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Prednisone (oral, commencing 25 mg with phased dose reduction over 2… led to lower time to resolution of first ulcer (days) compared with placebo; GRADE not reported.

1 finding from 1 review

Prednisone (oral, commencing 25 mg with phased dose reduction over 2 months) vs Montelukast (leukotriene receptor antagonist)

Time to resolution of first ulcer (days) · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Prednisone (oral, commencing 25 mg with phased dose reduction over 2… led to lower time to resolution of first ulcer (days) compared with montelukast (leukotriene receptor antagonist); GRADE not reported.

1 finding from 1 review