Program including abstracts as pdf available here

P 67
Title
THE INFLuENCE OF DIFFERENT VOXEL RESOLuTIONS OF VERTICAL ROOT-FRACTuRED
TEETH
Authors
K. GuNDuz 1 , P. CELENK 1 , H. AVSEVER 2 , K. ORHAN 3 , b. OzMEN 4 , E. CICEK 5 , E. EGRIOGLu 6
Affiliations
1 Ondokuz Mayis University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology,
Samsun, TURKEY, 2 GATA, Dentistry Center, Department of Dentomaxillofacial Radiology,,
Ankara, TURKEY, 3 East University, Faculty of Dentistry, Department of Dentomaxillofacial
Radiology, Mersin, TURKEY, 4 Ondokuz Mayis University, Faculty of Dentistry, Department of
Pedodontics, Samsun, TURKEY, 5 Ondokuz Mayis University, Faculty of Dentistry, Department
of Endodontics, Samsun, TURKEY, 6 Ondokuz Mayis University,Department of Biostatistics,
Samsun, TURKEY
Body
Objectives: This study aimed at assessing the use of different voxel resolutions of two different
CBCT units in the detection of VFRs in vitro.
Methods: The study material comprised 74 extracted human mandibular single rooted premolar
teeth without root fractures that had not undergone any root-canal treatment. All root-canals
were instrumented to a size 40–60 stainless steel K-file and irrigated with 2% sodium hypochlorite
(NaOCl) following each change in instrumentation. Canals were filled with guttapercha
and endomethasone. The teeth were numbered and divided into two groups: a control group
with no fractures of 37 teeth and a test group of 37 with fractures. Images were obtained
from two different CBCT units: 3D Accuitomo 170 (3D Accuitomo; J Morita Mfg. Corp., Kyoto,
Japan) and NewTom 3G Scanner (Quantitative Radiology, Verona, Italy).A total of 4 image sets
were obtained as follows: (i) Accuitomo, 4¹ FOV (0.080 mm3); (ii) Accuitomo, 6¹ FOV (0.125
mm3); (iii) Newtom, 6¹ FOV (0.16 mm3); (iv) Newtom 9¹ FOV (0.25 mm3) .
Results: Higher Az values were obtained for the Accuitomo, 4¹ FOV (0.080 mm3) and Accuitomo,
6¹FOV (0.125 mm3) images compared with Newtom, 6¹ FOV (0.16 mm3) and Newtom 9¹
FOV (0.25 mm3) images.
Conclusion: No significant statistically differences were found among observers or voxel sizes
in the detection of simulated VRFs. Higher accuracy was reported with the smaller voxel sizes
and high-resolution scanning was recommended in cases of suspected VRF that could not be
visualized in periapical images.
Keywords
root fracture,CBCT,vertical
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