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Table 10 Reasons for 'Major' failures being recorded. Minimum patient follow-up 23 months; range of restoration failures 0–36 months.

From: The Hall Technique; a randomized controlled clinical trial of a novel method of managing carious primary molars in general dental practice: acceptability of the technique and outcomes at 23 months

  Criteria Control restoration (Control restoration) Hall PMC
Clinical failure Irreversible pulpitis 3 1
  Dental abscess, requiring pulpotomy or extraction 12 2
  Restoration loss; tooth unrestorable 2 0
Radiographic failure with no clinical signs Pulp therapy carried out, but no record in notes 1 0
  Internal resorption 1 0
Total   19 3