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

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