Evaluation of accuracy and repeatability using CBCT and a dental scanner by means of 3D software

So Ri Kim, Chong Myeong Kim, Il Do Jeong, Woong Chul Kim, Hae-Young Kim, Ji Hwan Kim

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Objective: The objective of the present study was to compare and evaluate the accuracy of three-dimensional (3D) image data acquired from cone beam computed tomography (CBCT) and a dental scanner using 3D software. Materials and methods: After selecting the full-arch forms of the maxilla and mandible as the master cast, the master cast was scanned via a high-precision optical scanner for use as master model data. The model was scanned 12 times each using CBCT and a dental scanner. Scanned data were superimposed onto the master cast data for evaluation of accuracy and repeatability. Results: Although significant differences in both accuracy and repeatability were seen between CBCT and dental scanner (P < 0.05), repeatability of the maxillary arch showed little difference, with CBCT and scanner having values of 17 ± 2 μm and 22 ± 5 μm, respectively. Meanwhile, repeatability of the mandibular arch with CBCT and scanner was 15 ± 0 μm and 19 ± 3 μm, respectively. Since good repeatability was shown, this demonstrated that data can be stably acquired. Conclusions: The present study demonstrated the feasibility of using a dental scanner to create a digital model as a substitute for a plaster model for use in orthodontic diagnosis and device fabrication.

Original languageEnglish
Pages (from-to)65-73
Number of pages9
JournalInternational Journal of Computerized Dentistry
Issue number1
Publication statusPublished - 2017


  • 3D software
  • Accuracy
  • Cone beam computed tomography
  • Dental scanner
  • Digital model
  • Repeatability

ASJC Scopus subject areas

  • Medicine(all)


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