Crestal Approach Sinus Elevation
A minimally invasive technique for augmenting the maxillary sinus floor through the implant osteotomy site rather than via a lateral window.
Full Definition
Crestal approach sinus elevation, also called the osteotome sinus floor elevation (OSFE) technique, accesses the sinus from directly above through the prepared implant site. Bone condensers or hydraulic pressure are used to gently infracture the sinus floor and push it superiorly. Because no lateral antrostomy is created, patient morbidity and healing time are typically reduced compared with lateral window approaches. The technique is generally suitable when residual bone height is at least 5–6 mm. Editors should not conflate this term with subantral augmentation, which typically implies a lateral approach.
Usage
Usage note: Distinguish clearly from lateral sinus augmentation in clinical documents; the approach determines post-operative protocol descriptions.
In Context
- "The report specified crestal approach sinus elevation rather than a lateral window procedure, which the editor noted reduced the described recovery period." — Surgical case report
- "When reviewing the operative note, ensure 'crestal approach sinus elevation' is not abbreviated to 'sinus lift' without clarifying the technique." — Editorial style guide