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. 2023 May-Aug;14(2):198-207.
doi: 10.4103/njms.njms_155_22. Epub 2023 Jul 13.

Evaluation of the effect of direct sinus lift surgery on maxillary sinus volume by Mimics software

Mahnaz Sheikhi  1 , Abbas Haghighat  2 , Neda Lourizadeh  3 , Hosein Tavangar  4 , Parmida Aryaee  3
Affiliations

Evaluation of the effect of direct sinus lift surgery on maxillary sinus volume by Mimics software

Mahnaz Sheikhi et al. Natl J Maxillofac Surg. 2023 May-Aug.

Abstract

Introduction: Sinus lift surgery allows sufficient volume of bone to be created in the posterior part of the maxilla. The aim of this study was to investigate the changes in maxillary sinus volume after a sinus lift and the rate of increase in ridge height at the site of the graft.

Methods: Eleven patients were chosen for sinus lift from among those who were referred to the radiology department for implant placement in the posterior region of the maxilla and whose bone height at the posterior of the maxilla was less than 4 mm on the cone-beam computed tomography (CBCT) image. The sinus volume was measured after importing the CBCT file in DICOM format into Mimics software. After determining the sinus volume, the patients underwent sinus lift surgery, and the amount of material used during the surgery was measured. After the time required to repair the area, the CBCT image was taken again. Then, the changes in the volume of the maxillary sinus and the increase in the height of the maxillary ridge at the surgical site were calculated. Then, the second stage of the surgery was performed to place the implant at the implant site.

Results: For an average of 1.40 cm3 of material, the rate of increase in ridge height was 10.52 mm, and the average change in sinus volume was 1.19 cm3.

Conclusions: CBCT images and Mimics software have many applications in examining and predicting parameters before and after sinus lift surgery.

Keywords: CBCT; maxillary sinus; mimic software; sinus lift.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Upload the file in the software
Figure 2
Figure 2
Draw a profile line to specify the density number to identify the required interval
Figure 3
Figure 3
Prepare MASK using the desired Density number
Figure 4
Figure 4
Limit selected points
Figure 5
Figure 5
Isolate the selected area from the rest
Figure 6
Figure 6
Add unselected area
Figure 7
Figure 7
Calculate the three-dimensional geometry of the area
Figure 8
Figure 8
Created three-dimensional model
Figure 9
Figure 9
Insert samples into 3-matic software and smooth the surface
Figure 10
Figure 10
Mount geometry before and after surgery
Figure 11
Figure 11
Subtract two volumes from each other and calculate the volume of changes between the two volumes
Figure 12
Figure 12
Comparison of alveolar ridge height before and after surgery
Figure 13
Figure 13
Maxillary ridge height before and after direct sinus lift and mean height changes
Figure 14
Figure 14
Maxillary sinus volume before and after direct sinus lift and mean volume change
Figure 15
Figure 15
The relationship between material volume (longitudinal axis) and sinus volume changes (transverse axis)
Figure 16
Figure 16
Correlation between material volume (longitudinal axis) and ridge height changes (transverse axis)
See this image and copyright information in PMC

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