Keratinized Mucosa
The band of firm, non-mobile gingival tissue surrounding an implant site, analogous to attached gingiva around natural teeth.
Full Definition
Keratinized mucosa refers to the zone of dense, stratified squamous epithelium adjacent to a dental implant that is bound to the underlying periosteum or bone. Its presence in adequate width (typically ≥2 mm) is considered important for long-term peri-implant health, as it resists mechanical trauma and bacterial ingress. Editors encountering this term in clinical case reports or surgical protocols should note its distinction from alveolar mucosa, which is mobile and non-keratinized. Measurement of keratinized mucosa width is a standard outcome variable in implant survival studies. Deficiency may prompt soft-tissue augmentation procedures prior to or concurrent with implant placement.
Usage
Usage note: Do not conflate with 'peri-implant mucosa', which is a broader anatomical term encompassing all soft tissue around an implant regardless of keratinization status.
In Context
- "The surgeon noted a 1 mm band of keratinized mucosa on the buccal aspect and recommended a free gingival graft before loading." — Surgical case report
- "Adequate keratinized mucosa width was confirmed at the six-month review, supporting the decision to proceed without augmentation." — Clinical follow-up note