Comparative study on quality of scanned images from varying materials and surface conditions of standardized model for dental scanner evaluation
Journal of Dental Rehabilitation and Applied Science
; : 104-115, 2018.
Article
in Ko
| WPRIM
| ID: wpr-739866
Responsible library:
WPRO
ABSTRACT
PURPOSE:
The purpose of this study is to evaluate the image acquisition ability of intraoral scanners by analyzing the comprehensiveness of scanned images from standardized model, and to identify problems of the model. MATERIALS ANDMETHODS:
Cast models and 3D-printed models were prepared according to international standards set by ISO12836 and ANSI/ADA no. 132, which were then scanned by model scanner and two different intraoral scanners (TRIOS3 and CS3500). The image acquisition performance of the scanners was classified into three grades, and the study was repeated with varying surface conditions of the models.RESULTS:
Model scanner produced the most accurate images in all models. Meanwhile, CS3500 showed good image reproducibility for angled structures and TRIOS3 showed good image reproducibility for rounded structures. As for model ingredients, improved plaster model best reproduced scan images regardless of the type of scanner used. When limited to 3D-printed model, powdered surface condition resulted in higher image quality.CONCLUSION:
When scanning structures beyond FOV (field of view) in standardized models (following ISO12836 and ANSI/ADA 132), lack of reference points to help distinguish different faces confuses the scanning and matching process, resulting in inaccurate display of images. These results imply the need to develop a new standard model not confined to simple pattern repetition and symmetric structure.
Full text:
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Index:
WPRIM
Language:
Ko
Journal:
Journal of Dental Rehabilitation and Applied Science
Year:
2018
Type:
Article