Validity of tridimensional CT study of maxillary sinus reconstruction in potential implant site

الملخص EN

Twenty one adult patients (30-50 years) of both sexes, bilaterally or unilatrally edendulous patients were selected from candidates for implant insertion.

Multislice CT scan was carried out using multislice CT (MSCT, Somatom Sensation 16 slice machine (Siemens) with Syngo system and VB10B software.

Buccolingual bone width, remaining bone height, and the angulations of the maxillary sinus floor were measured at the potential implant site.

The total maxillary sinus volume and the inferior sinus volume needed to be grafted in the potential implant site at 5mm, 10mm and 15mm were measured.

Results showed that bone height ranged from 0.33 to 1.7 cm with SD 0.37, and bone width ranged from 0.65 to 1.14 cm with SD 0.11 at the potential implant site.

Significant difference was observed between the angle of the inner wall of maxillary sinus in bicuspid (mean 25.82o) and first molar region (mean 42.22 o).

The study recommends the use of combination of multi slice CT and 3D volume rendering techniques using computer graphics systems for establishment of the potential buccolingual position and inclination of the respective implants, and allows the measurement of the amount of bone present and bone graft needed for sinus lifting.