Influence of voxel size and scan field of view on fracture-like artifacts from gutta-percha obturated endodontically treated teeth on cone-beam computed tomography images

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• 作者：Masahiro Iikubo ; DDS ; PhD^a ; ^{Machapy@dent.tohoku.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Takashi Nishioka ; DDS ; PhD^a ; Shintaro Okura ; DDS ; PhD^b ; Kaoru Kobayashi ; DDS ; PhD^b ; Tsukasa Sano ; DDS ; PhD^b ; Akitoshi Katsumata ; DDS ; PhD^c ; Eiichiro Ariji ; DDS ; PhD^d ; Ikuho Kojima ; DDS ; PhD^a ; Maya Sakamoto ; DDS ; PhD^a ; Takashi Sasano ; DDS ; PhD^a
• 刊名：Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：122
• 期：5
• 页码：631-637
• 全文大小：817 K

文摘

To determine the optimal scan settings (scan mode and position of field of view [FOV]) for cone beam computed tomography to reduce root fracture-like artifacts that are often observed in teeth filled with gutta-percha cones (GPCs).

Study Design

Fracture-like artifacts that appeared on cone beam computed tomography images of 9 extracted human mandibular premolars filled with GPCs were analyzed using I-mode (FOV, 102 mm; voxel size, 0.2 mm) and D-mode (FOV, 51 mm; voxel size, 0.1 mm) settings.

Results

The artificial lines were more obvious in I-mode than in D-mode. Increased distance between the center of the FOV and the GPCs produced stronger artificial lines in both I-mode and D-mode.

Conclusion

To reduce fracture-like artifacts, it is critical to use a mode with small voxel size and to place the target tooth in the center of the FOV.