Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

353 questions · 366 findings · 17 reviews · Oral and maxillofacial surgery

No studies found 86 · 23.5%GRADE not reported 233 · 63.7%Very low 42 · 11.5%Low 3 · 0.8%Moderate 2 · 0.5%High 0 · 0%

Low‐level laser therapy vs Placebo (sham) laser therapy

Thermosensory (thermal) perception · Patients of any age in any setting requiring intervention for iatrogenic injury to the inferior alveolar or lingual nerve

Low-level laser therapy (photon-plus GaAlAs diode laser; 70 mW… showed no clear difference in thermosensory (thermal) perception compared with placebo (sham) laser therapy; GRADE not reported.

1 finding from 1 review

Low‐level laser therapy vs Placebo (sham) laser therapy

Patient satisfaction · Patients of any age in any setting requiring intervention for iatrogenic injury to the inferior alveolar or lingual nerve

The review found no eligible studies for this question.

1 finding from 1 review

Two lag screws vs One lag screw (with arch bars and IMF)

Restoration of function (occlusion) · Adults (16 to 68 years) with mandibular fractures excluding condylar involvement
1 finding from 1 review
  • Restoration of the original occlusion, assessed visually, was similar in both groups (P>0.05); occlusal correction was not achieved in one participant in the two-lag-screws group. Surrogate/proxy outcome.
    1 study
    GRADE not reported

Open (surgical) reduction and fixation vs Closed (non-surgical) treatment

Outcome not reported · Adults (16 to 68 years) with mandibular fractures excluding condylar involvement

The review found no eligible studies for this question.

1 finding from 1 review
  • "There were no studies comparing different types of closed interventions with one another or comparing open and closed interventions." "We found no studies that compared surgical with non-surgical treatments."
    0 studies
    No studies found

Transbuccal miniplate combined with intraoral approach vs Intraoral approach alone

Restoration of function (malocclusion; interincisor mouth opening) · Adults with fractures of the mandibular angle
1 finding from 1 review
  • Interventions for the management of mandibular fractures 2013 · Cochrane All outcomes
    3 months · Angle of mandible only
    Persistent malocclusion was minimal, reported in one participant in each group at the 3-month follow-up. Mean interincisor mouth opening at 3 months 37.68 mm (range 17 to 50) combined approach vs 38.19 mm (range 22 to…
    1 study
    GRADE not reported

Two miniplates (transbuccal approach) vs One miniplate plus two screws (intraoral approach at external oblique ridge)

Post-operative infection · Adults with fractures of the mandibular angle

Two miniplates (transbuccal approach) showed no clear difference in post-operative infection compared with one miniplate plus two screws (intraoral approach at external…; GRADE not reported.

1 finding from 1 review

2 mm titanium plates vs 2.5 mm bioresorbable plates

Restoration of function (inability to chew hard food) · Adults (16 to 68 years) with mandibular fractures excluding condylar involvement

2 mm titanium plates showed no clear difference in restoration of function (inability to chew hard food) compared with 2.5 mm bioresorbable plates; GRADE not reported.

1 finding from 1 review

Transbuccal miniplate combined with intraoral approach vs Intraoral approach alone

Post-operative infection (persistent) · Adults with fractures of the mandibular angle

Transbuccal miniplate combined with intraoral approach showed no clear difference in post-operative infection (persistent) compared with intraoral approach alone; GRADE not reported.

1 finding from 1 review

Locking plate vs 2 mm non-locking titanium plates

Post-operative adverse events and complications (paraesthesia, swelling, segmental mobility) · Adults (16 to 68 years) with mandibular fractures excluding condylar involvement
1 finding from 1 review
  • Agarwal 2011: paraesthesia in one participant in the non-locking plate group (resolved by 3 months), none in the locking group; infection rates similar at 6 weeks and 3 months; post-operative swelling in 20% of both…
    1 study
    GRADE not reported

Two miniplates (transbuccal approach) vs One miniplate plus two screws (intraoral approach at external oblique ridge)

Post-operative adverse events and complications (lip numbness; overall) · Adults with fractures of the mandibular angle
1 finding from 1 review
  • Interventions for the management of mandibular fractures 2013 · Cochrane All outcomes
    Angle of mandible only
    Siddiqui 2007: 22/36 (61%) single-miniplate vs 14/26 (54%) two-miniplate had one or more complications; subjective lip numbness 15/36 (41.7%) vs 10/26 (38.5%) (P=0.82), objective 16/36 (44.4%) vs 8/26 (31.7%) (P=0.29).…
    2 studies
    GRADE not reported

2 mm titanium plates vs 2.5 mm bioresorbable plates

Post-operative neurosensory disturbance (mental nerve paraesthesia) · Adults (16 to 68 years) with mandibular fractures excluding condylar involvement

2 mm titanium plates led to higher post-operative neurosensory disturbance (mental nerve paraesthesia) compared with 2.5 mm bioresorbable plates; GRADE not reported.

1 finding from 1 review