Root canal filling materials spread pattern mimicking root fractures in dental CBCT images

Masahiro Iikubo; Takashi Osano; Tsukasa Sano; Akitoshi Katsumata; Eiichiro Ariji; Kaoru Kobayashi; Takashi Sasano; Mamoru Wakoh; Kenji Seki; Ikuho Kojima; Maya Sakamoto

doi:10.1016/j.oooo.2015.06.030

Root canal filling materials spread pattern mimicking root fractures in dental CBCT images

Oral Surg Oral Med Oral Pathol Oral Radiol. 2015 Oct;120(4):521-7. doi: 10.1016/j.oooo.2015.06.030. Epub 2015 Jul 9.

Authors

Affiliations

¹ Associate Professor, Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan. Electronic address: Machapy@dent.tohoku.ac.jp.
² Assistant Professor, Department of Oral and Maxillofacial Radiology and Diagnosis, Tsurumi University School of Dental Medicine, Yokohama, Japan.
³ Professor, Division of Radiology, Department of Oral Diagnostic Sciences, Showa University School of Dentistry, Tokyo, Japan.
⁴ Professor, Department of Oral Radiology, Asahi University School of Dentistry, Mizuho, Japan.
⁵ Professor, Department of Oral and Maxillofacial Radiology, Aichi-Gakuin University School of Dentistry, Nagoya, Japan.
⁶ Professor, Department of Oral and Maxillofacial Radiology and Diagnosis, Tsurumi University School of Dental Medicine, Yokohama, Japan.
⁷ Professor, Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan.
⁸ Associate Professor, Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Tokyo, Japan.
⁹ Associate Professor, Division of Radiology, Department of Oral Diagnostic Sciences, Showa University School of Dentistry, Tokyo, Japan.
¹⁰ Assistant Professor, Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan.
¹¹ Associate Professor, Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan.

PMID: 26346912
DOI: 10.1016/j.oooo.2015.06.030

Abstract

Objective: To clarify the cause of artificial tooth-root fracture lines in cone beam computed tomography (CBCT) images caused by root canal filling materials and to enhance the diagnostic performance of CBCT.

Study design: We analyzed the CBCT images of 18 extracted human teeth (9 upper central incisors and 9 lower premolars) that were filled with a size 50 gutta-percha cone and inserted into tooth sockets in a human skull.

Results: The CBCT images of the incisors displayed artificial lines in the oblique directions, notably the mesiobuccal, distolingual, distobuccal and mesiolingual directions, but only rarely in the cross-directions (buccal, lingual, mesial, and distal). In the premolars, the reverse was true, with lines mainly in the cross-directions, mesial and distal directions particularly. The lines were predominantly at the cervical slice.

Conclusions: Artifacts resulting from root filling material appear along the long axis of the alveolar bones, and resemble root fractures.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Artifacts
Bicuspid / diagnostic imaging
Cone-Beam Computed Tomography / methods*
Gutta-Percha / chemistry*
Humans
In Vitro Techniques
Incisor / diagnostic imaging
Root Canal Filling Materials / chemistry*
Tooth Fractures / diagnostic imaging
Tooth Root / diagnostic imaging*

Substances

Root Canal Filling Materials
Gutta-Percha