International Journal of Oral and Maxillofacial Surgery
Research PaperImagingSimulation of sinus floor augmentation with symphysis bone graft using three-dimensional computerized tomography
Section snippets
Material and methods
Data from 15 head and neck CT scans acquired from 15 adult patients (10 males, five females) taken for various reasons was used in this study. Patients who had maxillary sinus or mandibular symphysis pathology that could prevent size and volume calculations were excluded from the study. CT was performed with a 16-detector-row CT scanner (Aquillon; Toshiba Medical Systems, Tokyo, Japan) during one breath hold (16–24 s). Scans were obtained with 16 × 0.5-mm collimation, 0.5-mm slice thickness, 120 kV
Results
The average bone volume calculated from the mandibular symphysis was 3491.08 ± 772.12 mm3. The average calculated augmentation volume for an augmentation height of 10 mm was 1665.49 ± 657.18 mm3; for an augmentation height of 18 mm, the average volume required was 5057.73 ± 1619.36 mm3. It was determined that the amount of bone volume that can be harvested from each patient's symphysis could be enough to raise the sinus floor height 12 mm in one patient, 13 mm in five patients, 14 mm in two patients, 15 mm in
Discussion
Maxillary sinus enlargement and insufficient residual bone often require augmentation procedures before dental implant placement. After the sinus lift operation was introduced in 1980, the technique became widely accepted as a routine method to increase bone volume before implant placement12. It should be taken into account that the grafted volumes may adapt considerably in shape and volume due to repneumatisation of the maxillary sinuses12.
Although allogenic, xenogenic and alloplastic
Competing interests
None declared.
Funding
None.
Ethical approval
Not required.
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