What do systematic reviews say?

Tilting-type RDP (minor connector design) vs Functional and sanitary RDP designs

• Interventions for replacing missing teeth: partially absent dentition 2012 · Cochrane All outcomes
  The tilting-type RDP significantly outscored the functional and sanitary designs for patient satisfaction; within-patient SDs not given, data narrative only
  1 study · 25 participants
  GRADE not reported

RDP with lingual plate major connector vs RDP with sublingual bar major connector

RDP with lingual plate major connector led to lower abutment tooth mobility (Periotest) at 30 months compared with RDP with sublingual bar major connector; GRADE not reported.

• Interventions for replacing missing teeth: partially absent dentition 2012 · Cochrane All outcomes

  30 months
  MD -1.99 [-3.36, -0.62]
  1 study · 36 participants
  GRADE not reported

Fluocinonide in adhesive base vs placebo

• Interventions for erosive lichen planus affecting mucosal sites 2012 · Cochrane All outcomes
  Table 3 (Side-effects). Voute 1993: no side-effects during the study and follow-up period.
  1 study · 27 participants
  GRADE not reported

One-to-one advice on sugar restriction: detailed information on the sugar content of foods, with instruction to refrain from sugar-containing foods between meals and to reduce sugar in main meals (6-week sugar restriction) vs No advice on sugar restriction

• One‐to‐one dietary interventions undertaken in a dental setting to change dietary behaviour 2012 · Cochrane All outcomes

  Follow-up at 3, 6 and 12 weeks
  Table 5, total mean (SD) intakes/day: intervention 9.5 (1.9) baseline, 1.6 (1.4) at 3 weeks, 1.8 (1.5) at 6 weeks, 7.8 (3.5) at 12 weeks; control 7.2 (2.6), 7.1 (3.7), 6.5 (4.2), 6.7 (2.2). Significant reduction versus…
  1 study · 20 participants
  GRADE not reported

Levamisole 50 mg three times per day for days 1 and 2 vs Levamisole 50 mg three times per day for day 1 and placebo for day 2 (lower dose)

• Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes

  16 weeks
  A trial at high risk of bias (Zissis 1983) compared two different dose regimens of levamisole (treatment 2 days per week for 16 weeks; a third group received placebo). There was inconsistency in the presentation of the…
  1 study
  GRADE not reported

Sodium hypochlorite (NaOCl), 2.5% to 5.25% vs Chlorhexidine, 0.2% to 2% (solution or gel)

The review found no eligible studies for this question.

• Irrigants for non‐surgical root canal treatment in mature permanent teeth 2012 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Topical thalidomide vs Another topical agent or placebo

The review found no eligible studies for this question.

• Topical treatments for HIV‐related oral ulcers 2012 · Cochrane All outcomes
  No studies were included in this review. A total of 233 abstracts were retrieved; 25 were selected as potentially eligible but all were excluded (10 reported systemic rather than topical treatment; 3 non‐RCTs; 6…
  0 studies
  No studies found

Sodium hypochlorite 5.25% vs Normal saline

The review found no eligible studies for this question.

• Irrigants for non‐surgical root canal treatment in mature permanent teeth 2012 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Extraction of the primary maxillary canine vs no intervention

• Extraction of primary (baby) teeth for unerupted palatally displaced permanent canine teeth in children 2012 · Cochrane All outcomes

  At least 6 months follow-up after the intervention
  Change in the sagittal position of the upper first molars (Baccetti 2008 only): average sagittal displacement was 2.65 mm in the extraction-only group and 2.32 mm in the untreated control group (0.24 mm in the…
  1 study
  GRADE not reported

Prednisone (oral, commencing 25 mg with phased dose reduction over 2 months) vs Montelukast (leukotriene receptor antagonist)

Prednisone (oral, commencing 25 mg with phased dose reduction over 2… showed no clear difference in total number of new lesions over 2-month treatment period compared with montelukast (leukotriene receptor antagonist); GRADE not reported.

• Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes

  2 months
  MD -0.30 [-0.90, 0.30]
  1 study · 40 participants
  GRADE not reported

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

The review found no eligible studies for this question.

• Irrigants for non‐surgical root canal treatment in mature permanent teeth 2012 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Sodium hypochlorite 5% vs Sodium hypochlorite 5% with proteolytic enzyme

The review found no eligible studies for this question.

• Irrigants for non‐surgical root canal treatment in mature permanent teeth 2012 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Extraction of the primary maxillary canine vs no intervention

• Extraction of primary (baby) teeth for unerupted palatally displaced permanent canine teeth in children 2012 · Cochrane All outcomes

  At least 6 months follow-up after the intervention
  Narrative summary (data not poolable, not GRADE-rated). Leonardi 2004: successful eruption of the permanent canine 50% in the extraction-only group, which was not significantly greater than the success rate in…
  2 studies · 70 participants
  GRADE not reported

Colchicine (0.5 mg three times per day) vs placebo

• Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes

  6 months
  There was a greater percentage of treatment interruptions in the colchicine group due to gastrointestinal adverse effects (Fisher's exact test P=0.009). The review noted potential evidence of harm at a dose of 1.5 mg…
  1 study · 43 participants
  GRADE not reported

Altered-cast technique RDP vs One-piece cast RDP

Altered-cast technique RDP showed no clear difference in patients with increased abutment tooth mobility compared with one-piece cast RDP; GRADE not reported.

• Interventions for replacing missing teeth: partially absent dentition 2012 · Cochrane All outcomes
  RR 1.81 [0.91, 3.58]
  1 study · 57 participants
  GRADE not reported

Sodium hypochlorite (NaOCl), 2.5% to 5.25% vs Chlorhexidine, 0.2% to 2% (solution or gel)

The review found no eligible studies for this question.

• Irrigants for non‐surgical root canal treatment in mature permanent teeth 2012 · Cochrane All outcomes
  no estimate extracted
  0 studies
  No studies found

Camel thorn (plant distillate) vs placebo

• Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes

  up to 14 days
  No evidence of drug side effects was observed.
  1 study · 93 participants
  GRADE not reported

LongoVital (herbal plus vitamin component) vs LongoVital (herbal component alone)

• Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes

  4 months
  Reported adverse events were minor and evenly distributed between the groups (Kolseth 2005).
  1 study · 40 participants
  GRADE not reported

Glucosamine sulfate (oral) vs ibuprofen

Glucosamine sulfate (oral) led to lower pain during function (proportion without significant improvement) compared with ibuprofen (oral); GRADE not reported.

• Interventions for managing temporomandibular joint osteoarthritis 2012 · Cochrane All outcomes

  90 days
  Six participants in the glucosamine group did not experience significant improvement in TMJ pain compared with seven in the ibuprofen group (Analysis 3.1); Fisher's exact test P = 0.73 (not significant, per the authors).
  1 study · 45 participants
  GRADE not reported

Titanium (Procera) abutment vs Gold-alloy (machined UCLA) abutment

• Interventions for replacing missing teeth: partially absent dentition 2012 · Cochrane All outcomes

  4 years
  100% success, no prosthetic complications, and a similar loss of marginal bone (0.4 mm) in both groups (narrative)
  1 study · 20 participants
  GRADE not reported