Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · Oral Health

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%

Perioperative infraorbital nerve block vs Placebo (sham/placebo device)

Need for analgesic prescription for pain (supplemental analgesic requirements) · Children up to 13 years of age, undergoing cleft lip repair surgery

Perioperative infraorbital nerve block may leads to lower need for analgesic prescription for pain (supplemental analgesic… compared with placebo (sham block) (low certainty).

1 finding from 1 review

Laser (Er:YAG, Er,Cr:YSGG, or Nd:YAG) vs Conventional mechanical caries removal (standard drill; handpiece with a bur)

Participant preference · Children, adolescents and adults with caries in deciduous and permanent teeth (age 3.5 to 84 years)
1 finding from 1 review
  • Three studies (Evans 2000; Liu 2006; Zhang 2013) reported participants' preference for future treatment. Zhang 2013: 37/53 children (72%) preferred laser, 10 (22%) drill. Liu 2006: 36/40 (90%) preferred laser, 4 (5%)…
    3 studies
    GRADE not reported

Benzodiazepines (systemic clonazepam) vs placebo

Change in QoL - depression (surrogate marker) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether benzodiazepines (systemic clonazepam) changes change in QoL - depression (surrogate marker) compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (lycopene) vs placebo

Change in QoL - depression (surrogate marker) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (lycopene) changes change in QoL - depression (surrogate marker) compared with placebo (very low certainty).

1 finding from 1 review

Perioperative infraorbital nerve block vs Infiltration of the incision (peri-incisional infiltration)

Heart rate, respiratory rate, and blood pressure · Children up to 13 years of age, undergoing cleft lip repair surgery
1 finding from 1 review

Root-end resection (with or without root-end filling; surgical retreatment) vs Non-surgical re-treatment (orthograde root canal therapy)

Prevalence of pain - 1 day · People with one or more endodontically treated teeth and a periapical condition requiring retreatment

Root-end resection (with or without root-end filling; surgical… may leads to higher prevalence of pain - 1 day (participants reporting pain) compared with root canal retreatment (non-surgical/orthograde) (low certainty).

1 finding from 1 review

Physical barriers (tongue protector) vs placebo

Change in QoL - depression (surrogate marker) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether physical barriers (tongue protector) changes change in QoL - depression (surrogate marker) compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (alpha lipoic acid +/- adjunctive ingredients) vs placebo

Adverse events: worsening of hypertension · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (alpha lipoic acid +/- adjunctive ingredients) changes adverse effects: increase in blood pressure compared with placebo (very low certainty).

1 finding from 1 review

Breastfeeding vs Bottle feeding

Dental caries · Children with exclusively primary dentition (age ≤71 months)

In a meta-analysis of two cross-sectional studies, breastfed children had lower odds of dental caries than bottle-fed children (OR 0.43, 95% CI 0.23 to 0.80); certainty was not formally graded.

2 findings from 1 review

Down syndrome vs Individuals without Down syndrome (healthy controls: siblings, schoolchildren or others)

Dental caries · Individuals of all ages

Individuals with Down syndrome had a lower prevalence of dental caries than those without (pooled OR 0.36, 95% CI 0.22 to 0.57; 2 studies; I2=0%); certainty of evidence not graded.

1 finding from 1 review

Maxillary sinus lift (augmentation) with long implants vs Short implants (5 to 8.5 mm) without sinus augmentation

Patient preference · Patients with missing teeth and an atrophic posterior maxilla, with residual bone height between 4 and 9 mm below the maxillary sinus
1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Metabolic syndrome (prevalent) · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Metabolic syndrome (prevalent): OR 0.49 (95% CI 0.38 to 0.64), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Vitamin D vs placebo or control

Diastolic blood pressure · Adults (general population)

Meta-analysis of randomised trials of vitamin D supplementation for Diastolic blood pressure: WMD -0.03 (95% CI -1.98 to 1.92), not statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Cardiovascular disease (prevalent) · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cardiovascular disease (prevalent): OR 0.67 (95% CI 0.55 to 0.82), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Osteotomes with mallet (Summers' technique) vs Rotary instruments (Cosci technique)

Patient preference · Patients undergoing crestal maxillary sinus lift
1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Depression · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Depression (Cohort studies): HR 0.44 (95% CI 0.27 to 0.72), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

2 findings from 1 review

Vitamin D vs placebo or control

Systolic blood pressure · Adults (general population)

Meta-analysis of randomised trials of vitamin D supplementation for Systolic blood pressure: WMD -2.39 (95% CI -5.7 to 0.9), not statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Type 2 diabetes (prevalent) · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Type 2 diabetes (prevalent): OR 0.45 (95% CI 0.25 to 0.82), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Zygomatic implants without bone grafts (as a complete alternative to any bone augmentation procedure) vs Conventional dental implants in augmented maxillae

Patient perceived satisfaction (denture preference) · Participants with an atrophic maxilla who cannot be rehabilitated with conventional dental implants due to lack of bone (including…

The review found no eligible studies for this question.

1 finding from 1 review

Hyperbaric oxygen vs No HBO therapy

Preimplantation complications · Patients who have had radiotherapy and who have missing teeth that require replacement with osseointegrated dental implants

Hyperbaric oxygen (HBO) therapy led to lower preimplantation complications compared with no HBO therapy; GRADE not reported.

1 finding from 1 review