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Palatal window osteotomy technique improves maxillary sinus augmentation in previously insufficient augmentation

Daisuke Ueno1, Takashi Kurokawa2, Katsuichiro Maruo3

  • 1Department of Implantology and Periodontology, Kanagawa Dental University, Graduate School of Dentistry, 3-31-6 Tsuruya-cho, Kanagawa-ku, Yokohama, Japan. ueno@kdu.ac.jp.

International Journal of Implant Dentistry
|October 18, 2016
PubMed
Summary

The palatal antrostomy approach offers a viable alternative for sinus floor augmentation when conventional methods fail. This technique successfully addressed insufficient bone formation after a membrane perforation, enabling subsequent implant placement.

Keywords:
Dental implantsPalatal osteotomySinus floor augmentationSurgical technique

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Area of Science:

  • Dentistry
  • Oral Surgery
  • Regenerative Medicine

Background:

  • Schneiderian membrane perforation is a common complication during sinus floor augmentation (SFA).
  • Insufficient bone volume can occur even when grafting is managed to prevent perforation enlargement.

Purpose of the Study:

  • To present a case utilizing the palatal antrostomy approach for sinus floor augmentation.
  • To evaluate the efficacy of this technique in a patient with prior augmentation complications.

Main Methods:

  • A palatal antrostomy approach was employed for sinus floor augmentation in a site with previous insufficient bone formation post-perforation.
  • The sinus cavity was grafted with deproteinized bovine bone mineral (DBBM) mixed with venous blood.
  • Dental implants were subsequently placed and abutment connection surgery was performed.

Main Results:

  • The palatal antrostomy allowed for successful membrane elevation without further perforation.
  • Radiographic imaging showed improved bone radiopacity without significant resorption at the augmented site.
  • Successful implant placement and abutment connection were achieved.

Conclusions:

  • The palatal window osteotomy technique is a valuable alternative for maxillary sinus augmentation.
  • This approach is particularly useful when conventional methods for membrane elevation are challenging, such as in cases with long buccal bone height.