What do systematic reviews say?

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

The review found no eligible studies for this question.

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes
  The studies did not measure this outcome.
  0 studies
  No studies found

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

Preformed crown (any material; conventional technique or Hall… showed no clear difference in adverse events: gingival bleeding compared with filling (any material; with or without complete carious tissue…; GRADE not reported.

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Short term (up to 12 months)
  RR 1.69 [0.61, 4.66]
  2 studies · 226 participants
  GRADE not reported
• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Long term (12 months)
  RR 1.74 [0.99, 3.06]
  2 studies · 195 participants
  Low

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

The review found no eligible studies for this question.

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes
  Satisfaction with treatment: listed in the Summary of findings table with no data; the studies did not measure this outcome.
  0 studies
  No studies found

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

Preformed crown (any material; conventional technique or Hall… probably leads to lower pain compared with filling (any material; with or without complete carious tissue… (moderate certainty).

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Long term (12 months to 24 months)
  RR 0.15 [0.04, 0.67]
  2 studies · 312 participants
  Moderate
• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Short term (less than 12 months)
  Short term (less than 12 months): effect not estimable (Analysis 1.2.1; 64 teeth, 32 participants; one study, Hutcheson 2012).
  1 study · 64 participants
  GRADE not reported

Preformed crown (any material; conventional technique or Hall Technique) vs No treatment

The review found no eligible studies for this question.

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes
  Crown versus no treatment was a planned comparison (Comparison 2: crown versus no crown or filling). No study evaluated crown versus no treatment; the only study in this comparison (Santamaria 2014) used active…
  0 studies
  No studies found

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

The review found no eligible studies for this question.

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes
  The studies did not measure this outcome.
  0 studies
  No studies found

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

Preformed crown (any material; conventional technique or Hall… probably leads to lower discomfort associated with the procedure compared with filling (any material; with or without complete carious tissue… (moderate certainty).

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  At time of dental appointment or within 24 hours
  RR 0.56 [0.36, 0.87]
  2 studies · 381 participants
  Moderate

Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment)

• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Short term (less than 12 months)
  Short term (less than 12 months): no failures in either group; effect not estimable (Analysis 1.1.1; 76 teeth, 38 participants; one study, Hutcheson 2012).
  1 study · 76 participants
  GRADE not reported
• Preformed crowns for decayed primary molar teeth 2015 · Cochrane All outcomes

  Long term (12 months to 48 months)
  RR 0.18 [0.06, 0.56]
  3 studies · 346 participants
  Moderate