TABLE 5.

Characteristics of reviewed non‐randomized controlled trials

Author (Year)	Follow‐up (years)	Teeth (n) Lost to follow‐up (%)	Residual coronal structure Pre‐stratification (Y/N)	Interventions tested	Outcomes
Fokkinga et al. (2008)	17 years	Ant, PM, M (98); (>50%)	Presence of >75% tooth structure (at least 1 mm thickness and height); 1–2 mm ferrule present; N	Metal‐P versus No post Final restoration: Composite	Metal‐P: Tooth survival (75%); Restoration survival (57%) No post: Tooth survival (82%); Restoration survival (49%)
Fokkinga et al. (2007) (Substantial dentinal height)	17 years	Ant, PM, M (196); (>50%)	Presence of >75% tooth structure (at least 1 mm thickness and height); 1–2 mm ferrule present; N	Metal‐P versus Cast‐PC versus No post Final restoration: Crown	Metal‐P: Tooth survival (92%); Restoration survival (84%) Cast‐PC: Tooth survival (92%); Restoration Survival (85%) No post: Tooth survival (83%); Restoration survival (88%)
Fokkinga et al. (2007) (Minimal dentinal height)	17 years	Ant, PM, M (111); (>50%)	<75% tooth structure (at least 1 mm height); or 1–2 mm ferrule absent; N	Metal‐P versus Cast‐PC Final restoration: Crown	Metal‐P: Tooth survival (83%); Restoration survival (71%) Cast‐PC: Tooth survival (92%); Restoration survival (84%)

Abbreviations: Ant: anterior; Cast‐PC: custom cast post and core; M: molar; Metal‐P: prefabricated metal post; PM: premolar.