. 2019 Sep-Oct;12(5):445–452. doi: 10.5005/jp-journals-10005-1666

Table 2.

Effectiveness of Halls technique observed in the included studies

Author	Study design	No. of teeth assessed (n = 1775)	Number of teeth restored with Hall technique (n = 1325)	Outcome	Survival/success
Innes et al.²⁶	Randomized controlled trial	264	132 (91 were analyzed)	Success, major failure, minor failure	92% (Hall)
Innes et al.²⁶	Randomized controlled trial	264	132 (91 were analyzed)	Success, major failure, minor failure	52% (control)
Santamaria et al.³⁷	Randomized controlled trial	169	52 (40 were analyzed)	Success, major failure, minor failure	92.5% (Hall)
					70% (nonrestorative caries management)
					67% (conventional)
Boyd et al.³⁸	Quasi-experimental	180	96 (84 were analyzed)	Success, major failure, minor failure	94% (Hall)
Boyd et al.³⁸	Quasi-experimental	180	96 (84 were analyzed)	Success, major failure, minor failure	68% (plastic restorative material)
Innes et al.³⁵	Retrospective analysis	978	978	Survival of preformed metal crown	73.4% (3 years)
Innes et al.³⁵	Retrospective analysis	978	978	Survival of preformed metal crown	67.6% (5 years)
Ludwig et al.³⁶	Retrospective charts review	184	67	Success of PMC crown	97% (Hall)
Ludwig et al.³⁶	Retrospective charts review	184	67	Success of PMC crown	94% (traditional)