Schneider Membrane Elevation in Presence of Sinus Septa: Anatomic Features and Surgical Management

<table>A mucoperiostal flap is elevated. The buccal wall shows residual ridge with a perforation of the Schneider membrane related to previous tooth infection and fistula.</table>

International Journal of Dentistry

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Figure 4

Figure 4: Schneider Membrane Elevation in Presence of Sinus Septa: Anatomic Features and Surgical Management 