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The Sinus Membrane-Maxillary Lateral Wall Complex: Histologic Description and Clinical Implications for Maxillary
The International Journal of Periodontics & Restorative Dentistry
|October 13, 2017
Summary
This study describes the sinus membrane-bone union in maxillary sinus lifts. Sinus membrane thickness correlates with inflammation, and most fibers run parallel to the bone, suggesting potential osteogenic capacity.
Area of Science:
- Oral and Maxillofacial Surgery
- Periodontology
- Regenerative Medicine
Background:
- Maxillary sinus floor elevation is a common procedure for bone augmentation.
- The union between the sinus membrane and bone is not well understood.
- Clinical outcomes of impaired sinus membrane union are unknown.
Purpose of the Study:
- To provide a detailed histologic and morphologic description of the sinus membrane-lateral bone wall complex.
- To investigate the characteristics of the sinus membrane-bone interface.
Main Methods:
- 28 lateral wall sinus augmentation procedures were performed on 14 fresh cadaver heads.
- Sinus membrane samples were analyzed using various staining techniques and immunohistochemistry.
- Microscopic examination assessed thickness, inflammation, fiber orientation, and nestin expression.
Main Results:
- Average sinus membrane thickness was 0.40 ± 0.12 mm, correlating positively with inflammation.
- Most fibers in the deeper sinus membrane layers were oriented parallel to the maxillary bone wall.
- Nestin expression, indicating osteogenic potential, was observed in approximately 50% of samples.
Conclusions:
- Sinus membrane thickness and fiber orientation are influenced by inflammation and anatomical factors.
- The sinus membrane possesses osteogenic potential, even in elderly specimens.
- Further research is needed to understand the clinical implications of sinus membrane characteristics.