Clinical Evaluation of a Minimally Invasive Surgical Technique for Maxillary Sinus Floor Augmentation

抄録

The purpose of this study, conducted at a private dental clinic, was to clinically evaluate the outcome of a minimally invasive surgical technique for sinus augmentation that carries lower risks of intra- and postoperative complications.

We modified the usual steps performed in the sinus augmentation procedure, and discuss the major modifications and resultant improvements, along with a literature review of the original technique in this paper. The modifications and improvements we made in each step are highlighted, and the major modifications are discussed along with a literature review.

The biggest improvement most likely resulted from creation of a small fenestration,thereby creating a bag-like structure to keep the graft material in a stable state, which would facilitate better bone formation. In addition, maxillary sinus floor resorption was observed in most cases 2-3 years after surgery, with the resorption reaching the level of or below the tip of the implant. These results suggest that there is no need to take the risk involved in detaching and elevating a large area of mucosa from the inner wall, and that minimal mucosal detachment or augmentation is sufficient and leads to a stable outcome.

Our results suggest that minimal-intervention maxillary sinus augmentation is an effective procedure from both patient and bibliographic viewpoints.