Influence of width of keratinized tissue on the prevalence of peri‐implant diseases: A systematic review and meta‐analysis

Aim To evaluate the influence of the width of keratinized tissue (KT) on the prevalence of peri‐implant diseases, and soft‐ and hard‐tissue stability. Materials and methods Clinical studies reporting on the prevalence of peri‐implant diseases (primary outcome), plaque index (PI), modified plaque index (mPI), bleeding index (mBI), bleeding on probing (BOP), probing pocket depths (PD), mucosal recession (MR), and marginal bone loss (MBL) and/or patient‐reported outcomes (PROMs; secondary outcomes) were searched. The weighted mean differences (WMD) were estimated for the assessed clinical and radiographic parameters by employing a random‐effect model that considered different KT widths (i.e.,