# Formwork Technique with Mesh in Elevations of Sinus Floors with Large Perforations of the Schneider Membrane: A Case Pilot

## TL;DR

A new surgical technique using titanium mesh helps manage large membrane perforations during sinus floor elevation, reducing complications and patient discomfort.

## Contribution

A novel mesh formwork technique using titanium mesh, resorbable membrane, and xenograft is introduced for managing large Schneider membrane perforations.

## Key findings

- The mesh formwork technique allowed successful continuation of surgery despite significant Schneider membrane perforation.
- The approach reduced the number of interventions and patient morbidity.
- The method proved effective and predictable for implant placement in cases with large membrane perforations.

## Abstract

Background and Clinical Significance: Currently, maxillary sinus floor elevation is one of the most common procedures used in implantology practice. Despite its predictability, the technique is not without complications, such as graft material dispersion in the sinus cavity, wound dehiscence, hematoma, fenestrations, oroantral fistulas, epistaxis, acute sinusitis, and Schneider membrane perforations. The treatment of the latter can be complex, and depending on its extent, surgery deferral may be necessary, leading to increased patient morbidity. Case Presentation: A patient with apical surgery underwent sinus floor elevation with a significant Schneider membrane perforation using a new approach involving titanium mesh, resorbable membrane, and xenograft. This allowed the continuation of surgery, reducing the number of interventions and patient morbidity. Conclusions: Despite limitations due to a small sample size, this case report demonstrates that addressing large Schneider membrane perforations and placing implants is effective and predictable using the technology and approach of mesh formwork with titanium.