Characteristics of a new dental stone mixed by shaking

Nagasawa, Y.; Hibino, Y.; Shigeta, H.; Eda, Yoshikazu; Matsumoto, Shigeki; Nakajima, Hiroshi

doi:10.4012/dmj.2018-427

Cited by 2 publications

(3 citation statements)

References 7 publications

(12 reference statements)

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“…Stone models are considered the gold standard and a fundamental material for diagnosis, treatment planning, and fabrication of prostheses [1,6,14,[19][20][21]. The type IV dental stone is commonly used to fabricate definitive casts and removable dies for fixed prostheses due to its superior mechanical properties, such as high compressive strength, hardness, and low expansion [9,[22][23][24].…”

Section: Discussionmentioning

confidence: 99%

Evaluating the accuracy of CAD/CAM optimized stones compared to conventional type IV stones

Ceylan

Emir²

2023

PLoS ONE

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This study compared the accuracy (trueness and precision) of stone models fabricated using two brands of CAD/CAM optimized stones Cerec Stone (BC) and Elite Master (EM), and a conventional type IV stone Elite Rock Fast (ERF). 30 conventional Type IV and scannable stone complete-arch models were scanned with a blue LED extraoral scanner, and root mean square values were obtained. 6 abutments were used in complete-arch models. The digital models were compared with the master model to evaluate their trueness using model superimposition with Geomagic software. Precision was determined for each case by superimposing combinations of the 10 datasets in each group. The point cloud density of each model was calculated with MeshLab software. Kruskal-Wallis and Mann-Whitney non-parametric tests were used for the statistical analysis. The trueness of the stone models was 96 μm for the BC, 88.2 μm for the EM, and 87.6 μm for the ERF. There were no significant differences between the tested dental stones (p = .768). However, the EM models (35.6 μm) were more precise than the BC (46.9 μm) and ERF (56.4 μm) models (p = .001, p < .001). EM models also showed the highest point cloud density. There were significant differences in point cloud density (p = .003). The EM models showed significant differences in precision but no significant differences in terms of trueness. Although EM was more precise and had the highest point cloud density, all models were within the clinically acceptable limit.

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Section: Discussionmentioning

confidence: 99%

Evaluating the accuracy of CAD/CAM optimized stones compared to conventional type IV stones

Ceylan

Emir²

2023

PLoS ONE

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“…Regarding the number of voids, there was no significant difference when comparing the samples prepared by soaking powder in water and mixing under a vacuum. Furthermore, the vacuum mixing was reported to be beneficial in terms reducing the pore numbers [35].…”

Section: Discussionmentioning

confidence: 99%

“…More recently, a newly developed Type IV stone (Shake! Mix STONE) is commercially available and as the name implies, mixing is done by handshaking in a plastic container (specially-made) with water a specially-made plastic container with water [35].…”

Section: Discussionmentioning

confidence: 99%

Studying the Effect of Using Ultrasound Vibration on the Reproduction of Detail and Surface Hardness of Dental Stone Models

Aljafery¹,

Alkafagy²,

Wally³

et al. 2022

Nano BioMed ENG

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Background:The accuracy of surface production details in the dental models determines the success of the dental prosthesis in clinical application. Aim: This in vitro study aims to compare between dental stone models produced using two types of techniques for pouring the addition silicone impression. Method: The control group was poured using the conventional vibration technique at a vibration frequency of 3000 cycles/min and the experimental group was poured by an ultrasound vibration technique at a frequency of 28 kHz in order to assess the difference in pouring techniques in terms of reproduction of details and surface hardness. A stainless steel die, prepared based on the ISO 6873, was employed to fabricate samples for evaluating the surface details. Fisher's exact test scoring scale was employed to qualititatively assess the reproduced surface details. Vickers hardness was measured to evaluate the surface hardness of cylindrical stone samples poured by the two different techniques. Results:The results indicated that the reproduction of details of the stone samples poured by the ultrasound vibration technique were not significantly different (P > 0.05) in comparison with that poured by the conventional vibration technique. However, the surface hardness was significantly enhanced (P = 0.04) by the ultrasound vibration pouring technique. Conclusion: Although the application of ultrasound vibration during dental cast fabrication did not provide any significant clinical advantages in terms of surface reproducibility, it could significantly improve the surface hardness compared with the traditional vibration technique.

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Characteristics of a new dental stone mixed by shaking

Cited by 2 publications

References 7 publications

Evaluating the accuracy of CAD/CAM optimized stones compared to conventional type IV stones

Evaluating the accuracy of CAD/CAM optimized stones compared to conventional type IV stones

Studying the Effect of Using Ultrasound Vibration on the Reproduction of Detail and Surface Hardness of Dental Stone Models

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