Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

342 questions · 380 findings · 34 reviews · All outcomes

No studies found 97 · 25.5%GRADE not reported 190 · 50%Very low 67 · 17.6%Low 23 · 6.1%Moderate 3 · 0.8%High 0 · 0%

Herbal mouthwash vs Placebo mouthwash

Volatile sulphur compounds (VSC), halimeter · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

Herbal mouthwash led to lower volatile sulphur compounds (VSC) compared with placebo mouthwash; GRADE not reported.

1 finding from 1 review

Toothbrushing + tongue cleaning with a tooth-and-tongue gel (amine/stannous fluoride + zinc lactate) vs Toothbrushing with reference toothpaste (with or without tongue cleaning)

OLT, VSC and patient satisfaction scores · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…
1 finding from 1 review
  • Interventions for managing halitosis 2019 · Cochrane All outcomes
    Wilhelm 2012 (3-arm cross-over trial) compared toothbrushing with a reference toothpaste, with reference toothpaste plus tongue cleaning, and toothbrushing plus tongue cleaning with a tooth-and-tongue gel (OLT, VSC,…
    1 study
    GRADE not reported

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Denture plaque · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

Educational intervention with information and practical components… showed no clear difference in denture plaque compared with (Optimised) usual care (low certainty).

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Caries/root caries · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Nutritional status · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

Educational intervention with information and practical components… showed no clear difference in nutritional status compared with (Optimised) usual care; GRADE not reported.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Incidence of respiratory diseases and pneumonia · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

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)

Healing rate · People with one or more endodontically treated teeth and a periapical condition requiring retreatment

Root-end resection (with or without root-end filling; surgical… showed no clear difference in healing - 10 years compared with root canal retreatment (non-surgical/orthograde); GRADE not reported.

2 findings from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Oral health · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Adverse effects of the interventions · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Denture-induced stomatitis · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Gingivitis · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)
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)

Participants reporting swelling · People with one or more endodontically treated teeth and a periapical condition requiring retreatment
1 finding from 1 review
  • Endodontic procedures for retreatment of periapical lesions 2016 · Cochrane All outcomes
    first postoperative week
    Significantly higher number of participants reporting swelling in the root-end resection group than in the root canal retreatment group during the first postoperative week (Analysis 1.5); per-day totals not pooled.
    1 study
    GRADE not reported

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

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

Healing - 1 year · People with one or more endodontically treated teeth and a periapical condition requiring retreatment

It is very uncertain whether root-end resection (with or without root-end filling; surgical… changes healing - 1 year compared with root canal retreatment (non-surgical/orthograde) (very low certainty).

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Oral health-related quality of life · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

The review found no eligible studies for this question.

1 finding from 1 review

Educational intervention with information and practical components (theoretical oral health education plus practical skills training) for nursing staff and/or residents vs (Optimised) usual care

Plaque · Nursing home residents (mean age 78.3 to 86.0 years; more than 66% women; 62.1% to 87.3% with dental prostheses)

Educational intervention with information and practical components… showed no clear difference in dental plaque compared with (Optimised) usual care (low certainty).

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Mandibular ramus growth · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Stability of anterior open bite correction (1 year after treatment) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Presence of clinical symptoms (pain, swelling, diagnosis of pulpitis, abscess formation) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Reduction or treatment of obstructive sleep apnoea syndrome (OSAS) or upper airway resistance syndrome (UARS) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review