Dimensional Changes Following Lateral Wall Sinus Augmentation Without Concomitant Implant Placement Using a Composite...

Area of Science:

• Oral and Maxillofacial Surgery
• Periodontology
• Regenerative Dentistry

Background:

• Lateral wall sinus augmentation is crucial for maxillary implant rehabilitation.
• Grafting materials aim to restore bone volume for dental implants.
• Evaluating dimensional stability of bone grafts is essential for long-term success.

Purpose of the Study:

• To assess sinus dimension changes after lateral bone augmentation using a bovine-derived xenograft and autogenous bone composite.
• To compare immediate postoperative dimensions with those at 1-year follow-up.

Main Methods:

• Retrospective analysis of 18 patients undergoing lateral wall sinus augmentation.
• Grafting with a 9:1 ratio composite of bovine-derived xenograft and autogenous bone.
• Radiographic measurements of sinus dimensions (vertical height, sagittal area) at pretreatment, immediate post-op, and 1-year post-op.

Main Results:

• Significant reduction in overall sinus sagittal area immediately post-surgery, which remained stable at 1 year.
• Grafted material area showed minimal reduction from immediate post-op to 1 year.
• Midsagittal graft height exhibited insignificant minimal reduction over the 1-year healing period.

Conclusions:

• Composite grafts of bovine-derived xenograft and autogenous bone demonstrate minimal dimensional changes 8-12 months after lateral sinus augmentation.
• The evaluated bone grafting material provides stable volumetric and linear dimensions for maxillary sinus floor elevation.