Table 2: SLM margin analysis of all restorations.

Baseline6 months12 months
Length [ m]
( )

Criterion
Perfect margin36.0%18.5%10.9%
(21.7)(17.8)(14.7)
Negative step25.6%49.3%57.1%
Formation(22.9)(23.9)(21.3)
Gap formation2.1%7.1%9.8%
(4.7)(10.1)(12.4)
Overhang23.5%11.3%8.7%
(20.1)(13.1)(9.8)
Positive step6.1%3.1%1.7%
Formation(9.3)(8.1)(5.8)
Marginal0.0%1.2%1.7%
Fracture(0.0)(3.8)(5.0)
Artifact6.5%9.3%10.2
(4.3)(11.8)(12.0)