[Quantitative evaluation for the accuracy of dental model three-dimensional scanner].

Autor:	Song Y; Peking University School, Beijing, China., Sun YC, Zhao YJ, Wang Y, Lv PJ
Jazyk:	čínština
Zdroj:	Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences [Beijing Da Xue Xue Bao Yi Xue Ban] 2013 Feb 18; Vol. 45 (1), pp. 140-4.
Abstrakt:	Objective: To establish a method to evaluate dental model three-dimensional scanner quantitatively, and to evaluate the accuracy which is a core indicator of 3Shape D700 scanner. Methods: A standard geometric model similar to the dental arch was designed by three-dimensional reverse software and processed by high precision CNC (computer numerical control) processing technology. Core indicators of dental model three-dimensional scanner including single scanning accuracy, space consistency and rescan accuracy were evaluated. Results: The result of single scanning accuracy of 3Shape D700 scanner was (15.00±10.84) μm, and there was no statistics difference between the accuracy given by manufacturer's instructions which is 20 μm (P=0.053), and same as the results of space consistency (compare the accuracy in vertical direction and horizontal direction, P=0.524) and rescan accuracy (compare the rescan accuracy in vertical direction, P=0.633, and in horizontal direction P=0.221). Conclusion: It is feasible to evaluate accuracy of dental model three-dimensional scanner by this method, which can avoid observer error caused by selecting points manually.
Databáze:	MEDLINE
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