Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,916 questions · 3,207 findings · 167 reviews · related questions CL0289

No studies found 596 · 18.6%GRADE not reported 1,666 · 51.9%Very low 603 · 18.8%Low 252 · 7.9%Moderate 78 · 2.4%High 12 · 0.4%

Single-visit root canal treatment vs Multiple-visit root canal treatment (two or more visits)

Postobturation pain at 1 week · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

It is very uncertain whether single-visit root canal treatment changes postobturation pain at 1 week compared with multiple-visit root canal treatment (two or more visits) (very low certainty).

1 finding from 1 review

Periodontal treatment (subgingival instrumentation, with or without antimicrobials/surgery) vs usual care or no treatment

Clinical attachment level (CAL) · People with diabetes mellitus (type 1 or type 2, mostly type 2) and periodontitis, at least 16 years of age

Periodontal treatment (subgingival instrumentation, with or without… led to lower clinical attachment level (CAL) compared with no active intervention/usual care; GRADE not reported.

1 finding from 1 review

Dental examinations at three-month intervals and preventive treatments vs usual care

MRONJ (incidence rate: cases per patient-year) · Men with metastatic prostate cancer receiving intravenous zoledronic acid (at risk of MRONJ)

It is very uncertain whether dental examinations at three-month intervals and preventive treatments changes MRONJ (incidence rate: cases per patient-year) compared with standard care (very low certainty).

1 finding from 1 review

Single-visit root canal treatment vs Multiple-visit root canal treatment (two or more visits)

Radiological failure (periapical radiolucency) after at least 1 year · People aged 10 years or above requiring root canal treatment; permanent teeth with completely formed apex and without internal resorption

Single-visit root canal treatment showed no clear difference in radiological failure (periapical radiolucency) after at least 1 year compared with multiple-visit root canal treatment (two or more visits) (moderate certainty).

1 finding from 1 review

Antibiotic prophylaxis before dental procedure vs placebo or no prophylaxis

Development of endocarditis (in those with definite indication for prophylaxis) · Adults or children at increased risk of bacterial endocarditis (pre-existing cardiac condition) undergoing an invasive dental procedure

It is very uncertain whether antibiotic prophylaxis before dental procedure changes development of endocarditis (in those with definite indication for… compared with no antibiotic prophylaxis or placebo (very low certainty).

1 finding from 1 review

Criteria-based screening with specific (personalised) referral letter vs Criteria-based screening with non-specific referral letter

Dental attendance at general dentist · School children, secondary school in the UK (aged 11 to 13 years)

It is very uncertain whether criteria-based screening with specific (personalised) referral letter changes dental attendance at general dentist compared with criteria-based screening with non-specific referral letter (very low certainty).

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

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Reported incidence or prevalence of root resorption of the impacted canine and/or incisors and/or first premolars · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Chemotherapy regimen A (+/- locoregional treatment) vs Chemotherapy regimen B (+/- locoregional treatment)

Disease-free survival · People receiving curative-intent treatment for oral cavity and oropharyngeal (squamous cell) cancer
1 finding from 1 review

Intensive periodontal treatment (subgingival SRP with or without other periodontal treatment) vs Supra-gingival scaling

Diastolic blood pressure (mmHg), change from baseline · Adults (any age/sex) with chronic periodontitis (>=5 teeth remaining; PPD >4 mm), with or without hypertension

Intensive periodontal treatment (subgingival SRP with or without… probably leads to lower change in diastolic blood pressure (DBP, mmHg) compared with supra-gingival scaling (moderate certainty).

3 findings from 1 review

Lacebacks with fixed appliances vs Fixed appliances

Size of the lower jaw (arch length) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Lacebacks with fixed appliances showed no clear difference in size of the lower jaw (arch length) compared with fixed appliances only (control); GRADE not reported.

1 finding from 1 review

Induction chemotherapy plus locoregional treatment (radiotherapy and/or surgery) vs Locoregional treatment (radiotherapy and/or surgery) alone

Overall survival, induction cisplatin + 5-fluorouracil + docetaxel prior to concurrent chemoradiation (cisplatin) vs concurrent chemoradiation (cisplatin) · People receiving curative-intent treatment for oral cavity and oropharyngeal (squamous cell) cancer

Induction chemotherapy plus locoregional treatment (radiotherapy… showed no clear difference in overall survival, induction cisplatin + 5-fluorouracil + docetaxel… compared with locoregional treatment (radiotherapy and/or surgery) alone (low certainty).

1 finding from 1 review

ARP with demineralised bone matrix, single particle size vs ARP with demineralised bone matrix, multiple particle size

Complications (e.g. discomfort, pain and swelling) · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring extraction of one or more…
1 finding from 1 review

Induction chemotherapy plus locoregional treatment (radiotherapy and/or surgery) vs Locoregional treatment (radiotherapy and/or surgery) alone

Locoregional control · People receiving curative-intent treatment for oral cavity and oropharyngeal (squamous cell) cancer

Induction chemotherapy plus locoregional treatment (radiotherapy… led to lower locoregional control, induction cisplatin + 5-fluorouracil +… compared with locoregional treatment (radiotherapy and/or surgery) alone; GRADE not reported.

1 finding from 1 review

Schwarz appliance vs No active treatment (control)

Size of the lower jaw (arch length, change) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance showed no clear difference in size of the lower jaw (mandibular arch length, change) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review