The influence of maxillary sinus width on lateral sinus floor elevation outcomes


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Babayiğit O., Öncü E., Mağat G., Orhan K.

European Association for Osseointegration, Fredericia, Denmark, 22 - 24 October 2021, vol.32, no.22, pp.132-133

  • Publication Type: Conference Paper / Full Text
  • Volume: 32
  • Doi Number: 10.1111/clr.56_13856
  • City: Fredericia
  • Country: Denmark
  • Page Numbers: pp.132-133
  • Lokman Hekim University Affiliated: No

Abstract

Background: Sinus floor elevation (SFE) operations provide vertical bone augmentation by elevating the sinus floor in the maxillary posterior region with insufficient bone volume and using the graft material in the resulting space in order to allow implant-supported prosthetic treatments. It has been shown that differences such as graft stability, residual bone height in the maxillary sinus region and sinus width may affect the results of SFE operations.

Aim/Hypothesis: The aim of our study was to evaluate the newly grafted volume obtained at 6 months after the lateral SFE operations and to compare the obtained grafted volume and vertical graft resorption over time with the maxillary sinus width.

Material and Methods: In 26 patients, CBCT and digital panoramic radiography images were evaluated before and at 6 months after lateral sinus floor elevation procedures performed without complications using piezoelectric surgery in 33 maxillary sinus regions. Grafted volume of maxillary sinus and sinus width of the maxillary sinus region were calculated using CBCT images, and vertical graft resorption using digital panoramic radiography. The relationships between grafted volume, vertical graft resorption and maxillary sinus width were statistically compared.

Results: The mean maxillary sinus volume before the operation was 19.3 cm³ and the average of the maxillary sinus volume was 16.05 cm³ at 6 months after the operation. The grafted volume values measured at 6 months after the operation of the patients were the lowest 1.7 cm³ and the highest 5.0 cm³. The mean grafted volume was calculated as 3.26 cm³. The maxillary sinus regions were divided into 3 groups as narrow, average and wide. There were 10 maxillary sinuses with narrow sinus width, 13 with average sinus width, and 10 with wide sinus width. The grafted volume at 6 months after the lateral SFE operation was found to be statistically significantly higher in the narrow and mean sinus group compared to the wide sinus group (P = 0.001). The overall average vertical graft resorption among the patients was 2.12 ± 1.67 mm (range 0.24–7.74 mm). It was found that as the amount of sinus width increased, the vertical graft resorption increased statistically significantly (P = 0.006).

Conclusion and Clinical implications: In patients who are planned for lateral SFE operation, with the three-dimensional evaluation of the maxillary sinus width before the operation, vertical resorption of the graft, new bone gain can be predicted and the long-term success of the implants can be increased.