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http://dx.doi.org/10.5392/JKCA.2018.18.12.639

Precision Evaluation of Scanning the Digital Dental Abutment Impression and Dental Gypsum Model according to 3-dimensional Superimposing Different Skills  

Jeon, Jin-Hun (경동대학교 치기공학과)
Publication Information
The Journal of the Korea Contents Association / v.18, no.12, 2018 , pp. 639-645 More about this Journal
Abstract
The objective of this research was to compare the precision of scanning the digital abutment impression and gypsum model according to 3-dimensional superimposing different skills. There were made with the abutment impression and gypsum model of a maxillary 1st premolar, blue light scanner scanned to obtain the stereolithography (STL) file. After the same process was performed 10 more times without moving them on the scanner table about the abutment impression and gypsum model, respectively (n=11, per types). By superimposing the date of scanning the abutment impression and gypsum model used with no control and best-fit-alignment skills, 10 color-difference maps and root mean square (RMS) data were obtained. The independent t-test was performed to compare RMS data between the each other groups (${\alpha}=0.05$). In the scanning abutment impressions, $RMS{\pm}SD$ of no control, best-fit-alignment showed $6.86{\pm}0.94$, $5.04{\pm}0.24$. in the scanning gypsum model, $4.98{\pm}1.16$, $3.39{\pm}0.07$, all groups showed a significant difference (P<0.001). Trough the this study's result, not only best-fit-alignment but no control is used with digital dental computer-aided design/computer-aided manufacturing (CAD/CAM) research and clinical part.
Keywords
Data Accuracy; Dental Impression Materials; Imaging; Three-dimensional; Program Evaluation;
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