Fenestration
Pronunciation: fen-eh-STRAY-shun
A window-like defect in the alveolar bone overlying a tooth root, where the bone is absent but the overlying periosteum and gingiva remain intact.
Full Definition
A fenestration is a localised defect in the cortical plate of the alveolar bone in which a portion of the root surface is exposed within the bone, surrounded by intact bone on all sides. It differs from a dehiscence, where the defect extends to the crestal margin of the bone. Fenestrations are commonly encountered in periodontal and implant surgery and are clinically significant because they can influence soft- and hard-tissue grafting decisions. Editors should ensure that authors do not conflate fenestration with dehiscence, as the two defect types have different clinical management implications. The term is also used in endodontic surgery when describing a surgical access window.
Usage
Usage note: Always distinguish from 'dehiscence': a fenestration is an isolated window defect; a dehiscence extends to the bone crest. Flag if used interchangeably.
In Context
- "A buccal fenestration was noted at the apex of the upper right canine during flap reflection." — Periodontal surgical report
- "Authors must distinguish 'fenestration' from 'dehiscence'; the manuscript uses the terms interchangeably on page 4, which requires correction." — Peer-review editorial comment