Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,584 questions · 3,695 findings · 567 reviews

No studies found 784 · 21.2%GRADE not reported 308 · 8.3%Very low 1,036 · 28%Low 971 · 26.3%Moderate 440 · 11.9%High 156 · 4.2%

Hand mallet (osteotomes) vs Electric mallet

Complication at augmented site · Patients undergoing one-stage crestal maxillary sinus lift without bone grafts (baseline residual bone height about 6.5 mm)

Hand mallet (osteotomes) showed no clear difference in complications at augmented site compared with electric mallet; GRADE not reported.

1 finding from 1 review

Hand mallet (osteotomes) vs Electric mallet

Bone gain · Patients undergoing one-stage crestal maxillary sinus lift without bone grafts (baseline residual bone height about 6.5 mm)

Hand mallet (osteotomes) showed no clear difference in bone gain compared with electric mallet; GRADE not reported.

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Damage to the teeth (e.g. tooth decay) · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars

The review found no eligible studies for this question.

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Bond failure rate · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars

Self etching primers (one-step etchant and primer system) showed no clear difference in bond failure rate compared with conventional etchants (two-step etch and prime method using 37%… (low certainty).

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Participant satisfaction · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars

The review found no eligible studies for this question.

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Decay (decalcification) associated with or around the etching field · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars
1 finding from 1 review
  • Decay (decalcification) associated with or around the etching field: Only one study (Ghiz 2009) assessed this outcome but data were reported at the tooth level rather than at the participant level and therefore was not…
    1 study · 25 participants
    GRADE not reported

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Live birth rate · Patients with live birth rate

Embryo culture with low oxygen concentration probably leads to higher live birth rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Ongoing pregnancy · Patients with ongoing pregnancy

Embryo culture with low oxygen concentration probably leads to higher ongoing pregnancy rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Clinical pregnancy rate · Patients with clinical pregnancy rate

Embryo culture with low oxygen concentration probably leads to higher clinical pregnancy rate compared with embryo culture with atmospheric oxygen concentration (moderate certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Multiple pregnancy rate · Patients with multiple pregnancy rate

Embryo culture with low oxygen concentration showed no clear difference in multiple‐pregnancy rate compared with embryo culture with atmospheric oxygen concentration (low certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Miscarriage · patients with miscarriage rate

Embryo culture with low oxygen concentration showed no clear difference in miscarriage rate compared with embryo culture with atmospheric oxygen concentration (low certainty).

1 finding from 1 review

Embryo culture with low oxygen concentration vs embryo culture with atmospheric oxygen concentration

Congenital abnormalities · patients with congenital abnormalities

It is very uncertain whether embryo culture with low oxygen concentration changes congenital abnormalities compared with embryo culture with atmospheric oxygen concentration (very low certainty).

1 finding from 1 review