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首页> 外文期刊>The Journal of Prosthetic Dentistry >Marginal adaptation of four inlay casting waxes on stone, titanium, and zirconia dies
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Marginal adaptation of four inlay casting waxes on stone, titanium, and zirconia dies

机译：石材，钛和氧化锆模具上的四种镶嵌铸造蜡的边缘适应性

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Statement of problem Different inlay casting waxes do not produce copings with satisfactory marginal accuracy when used on different die materials. Purpose The purpose of this study was to evaluate the marginal accuracy of 4 inlay casting waxes on stone dies and titanium and zirconia abutments and to correlate the findings with the degree of wetting between the die specimens and the inlay casting waxes. Material and methods The inlay casting waxes tested were Starwax (Dentaurum), Unterziehwachs (Bredent), SU Esthetic wax (Schuler), and Sculpturing wax (Renfert). The marginal opening of the waxes was measured with a stereomicroscope on high-strength stone dies and on titanium and zirconia abutments. Photographic images were obtained, and the mean marginal opening for each specimen was calculated. A total of 1440 measurements were made. Wetting between die materials and waxes was determined after fabricating stone, titanium, and zirconia rectangular specimens. A calibrated pipette was used to place a drop of molten wax onto each specimen. The contact angle was calculated with software after an image of each specimen had been made with a digital camera. Collected data were subjected to a 2-way analysis of variance (α=.05). Any association between marginal accuracy and wetting of different materials was found by using the Pearson correlation. Results The wax factor had a statistically significant effect both on the marginal discrepancy (F=158.31, P<.001) and contact angle values (F=68.09, P<.001). A statistically significant effect of the die material factor both on the marginal adaptation (F=503.47, P<.001) and contact angle values (F=585.02, P<.001) was detected. A significant correlation between the marginal accuracy and the contact angle values (Pearson=0.881, P=.01) was also found. Conclusions Stone dies provided wax copings with the best marginal integrity, followed by titanium and zirconia abutments. Unterziehwachs (Bredent), wax produced the best marginal adaptation on different die materials. A significant correlation was found between the marginal accuracy and the contact angle values. As the contact angle value became smaller, the marginal accuracy improved. All combinations of waxes and stone and titanium dies presented a high wettability.
机译：问题陈述当在不同的模具材料上使用时，不同的嵌体铸造蜡不能产生令人满意的边缘精度的顶盖。目的本研究的目的是评估石模，钛和氧化锆基台上的4种镶嵌铸造蜡的边际精度，并将发现的结果与铸模试样和镶嵌铸造蜡之间的润湿程度相关联。材料和方法测试的镶嵌铸造蜡是Starwax（Dentaurum），Unterziehwachs（Bredent），SU Esthetic蜡（Schuler）和雕刻蜡（Renfert）。用立体显微镜在高强度石模以及钛和氧化锆基台上测量蜡的边缘开口。获得摄影图像，并计算每个样品的平均边缘开口。总共进行了1440次测量。在制造石材，钛和氧化锆矩形样品后，确定模具材料和蜡之间的润湿性。使用校准的移液管将一滴熔融蜡放在每个样品上。在用数码相机对每个样品成像后，用软件计算接触角。对收集的数据进行方差的2维分析（α= .05）。使用皮尔森相关性可发现边缘精度与不同材料的润湿性之间的任何关联。结果蜡因子对边际差异（F = 158.31，P <.001）和接触角值（F = 68.09，P <.001）均具有统计学意义。检测到模具材料因子对边际适应性（F = 503.47，P <.001）和接触角值（F = 585.02，P <.001）的统计显着影响。还发现边缘精度和接触角值之间存在显着的相关性（Pearson = 0.881，P = .01）。结论石材模具为蜡盖提供了最佳的边缘完整性，其次是钛和氧化锆基台。 Unterziehwachs（Bredent）蜡在不同模具材料上的边缘适应性最佳。发现边缘精度和接触角值之间存在显着相关性。随着接触角值变小，边缘精度提高。蜡，石模和钛模的所有组合都具有很高的润湿性。

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