Program including abstracts as pdf available here
Program including abstracts as pdf available here
Program including abstracts as pdf available here
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
OP 56<br />
Title<br />
CbCT REFORMATTED PANORAMIC IMAGING – HIGHLy PRECISE QuANTITATIVE EVALuATION<br />
uSING AN IMPLANT MODEL<br />
Authors<br />
b. RIECKE 1 , D. SCHuLzE 2 , R. E. FRIEDRICH 1 , M. bLESSMANN 1 , CLEMENS LOOS 3 ,<br />
M. HEILAND 1 , J. WIKNER 1<br />
Affiliations<br />
1 OCMF Surgery University Medical Center Hamburg Eppendorf, Hamburg, GERMANY, 2 Centre<br />
of Oral and Maxillofacial Radiology, Freiburg i.B., GERMANY, 3 Institute for Media and Imaging<br />
Technology, University of Applied Sciences¬, Cologne, GERMANY<br />
Body<br />
Objectives:<br />
Magnification, superimposition of neighbouring structures and other problems are in<strong>here</strong>nt<br />
problems of panoramic radiography (PR). Since accurate information of bony structures is of<br />
decisive importance the cone beam computed tomography (CBCT) seems to be a promising imaging<br />
modality. It carries the option to generate reformatted panoramic images. In this study<br />
we evaluated the precision of the reformatted panoramic image in displaying spatial relationships<br />
and compared it with conventional digital panoramic radiography.<br />
Methods:<br />
A special developed implant model w<strong>as</strong> mounted on a highly precise goniometer-rotationtable.<br />
CBCTs and PRs were taken using a promax 3D device (planmeca, finland). The implant<br />
model w<strong>as</strong> shifted, rotated and tilted precisely and retraceable in 5 mm deposition or 5°<br />
deviation, respectively. Semi-automated digital image analysis w<strong>as</strong> performed with the image j<br />
software.<br />
Results:<br />
The CBCT reformatted panoramic images outperformed the conventional digital PR if observed<br />
dynamically.<br />
Conclusions:<br />
A reformatted panoramic image out of a three dimensional data set should not be evaluated<br />
separately but rather comprehended dynamically taking the adjacent planes into account.<br />
Procedure specific immanent limitations are deducible.<br />
On the b<strong>as</strong>is of the presented data an unrestricted recommendation of three dimensional imaging<br />
for spatial evaluation <strong>as</strong> superior in all <strong>as</strong>pects should be questioned.<br />
Keywords<br />
panoramic radiography, cone beam computed tomography, reformatted panoramic image<br />
64
Change language