The maxillary sinus a pyramid-shaped cavity and largest
paranasal air-filled space with a min volume of 12.5 ML.
The Schneiderian membrane is also called as Schneiderian
epithelium, which is a membranous lining that covers the
inner part of the maxillary sinus. Nowadays, rehabilitation by
prosthetic implants, even in edentulous areas of the maxilla
affected by severe bone atrophies, is an unavoidable necessity,
leading to the development of standardized, predictable, and
safe regenerative techniques.