Table 2 Reasons for exclusion (implant maintenance studies)

Book chapter

Monje et al. [41]

In German

Petersilka et al. [42]

Observational study with no comparator

Duarte et al. [43]

Observational study with no comparator

Heitz-Mayfield et al. [44]

Treatment of peri-implant diseases

Al Ghazal et al. [11]

Treatment of peri-implant diseases

Schmidt et al. [19]

In vitro study

Koishi et al. [45]

Lack of repeated interventions / retreatment

Menini et al. [46]

Lack of repeated interventions / retreatment

Mussano et al. [47]