الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Many researches urge the dental clinicians to utilize CBCT
technology whenever possible to assess the sinus anatomy and volume
more accurately, thereby achieving more predictable results in sinus floor
elevation surgery.
This study was addressing the reliability of volumetric and linear
dimensional measurements of the maxillary sinus using CBCT; prior to
implant placement, in comparison to multi-slice CT.
Twelve volunteers were enrolled in the research and constituted the
study sample. Fifteen records of CBCT images of the maxillary sinuses of
these volunteers were included in the current work. All of the patients
were referred to a private diagnostic radiology center for multislice CT
scanning of the maxillary sinus.
CBCT and MSCT raw DICOM data set images were imported to the
OnDemand third party software for secondary reconstruction. Automatic
3D superimposition by fusion was carried on using this third party software
to assure standardization and reliability of the measurements. Dimensional
and volumetric measurements were undertaken form CBCT and CT
images, tabulated and statistically analyzed.
The statistical analysis of the investigated data revealed that there
was no statistically significant difference between the dimensional and
volumetric measurements yielded from CBCT and those of the gold
standard (CT).CT showed lower mean measurement than CBCT and the
mathematical equation calculations of the volume showed statistically
significantly lower mean measurement than the thresholding calculation.