Evaluatoin of the accuracy of 4 impression materials by a 3D optical scanner / 实用口腔医学杂志
Journal of Practical Stomatology
;
(6): 27-31, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-462135
ABSTRACT
Objective:
To study the 3D accuracy of 4 impression materials.Methods:
A metal mould with a custom tray was prepared for the measurement.Impression samples of 2 alginate and 2 rubber impression materials were prepared in the metal mould(n =3)re-spectively.The length of three tagged lines,along X,Y,Z axis directions of the samples was measured with a 3D optical scanner.Re-sults120 min after sampling the variable rates of the length along X,Y,Z axis of Zhermark alginate samples were 3.615%,3.037%and 2.836%,those of CAVEX alginate samples were 2.836%,3.358% and 4.276% respectively;8 h after sampling the variable rates of Impregum Penta polyether rubber samples were 0.039%,0.071% and 0.057%,those of ExpressXT Penta H addition-curing silicone rubber samples were 0.033%,0.088% and 0.084% respectively.Conclusion:
The variable rates of the 4 impression materi-als are in accordance with ISO1563∶1990.The variable rate of alginate impression material is greater than that of rubber.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Journal of Practical Stomatology
Year:
2015
Type:
Article
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