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PubMed · 6985665

Impression boxing and cast pouring.

H F Grove·L F Broering
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Abstract

Boxing impressions with cornstarch and solvite is a reliable and easily mastered technique. It avoids excessive manipulation of impressions which might lead to their distortion. This method is an alternate to those presented by Bolouri and associates and Harris.

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Dental Casting TechniqueDental Impression TechniqueStarchJournal Article

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H F Grove, L F Broering. 1980. Impression boxing and cast pouring.. https://doi.org/10.1016/0022-3913(80)90365-0

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[Effects of laser welding on bond of porcelain fused cast pure titanium].

OBJECTIVE: To investigate the influence of the laser welding on bond of porcelain fused to cast pure titanium. METHODS: Twenty cast titanium plates were divided into two groups: laser welded group and control group. The low-fusing porcelain was fused to the laser welded cast pure titanium plates at fusion zone. The bond strength of the porcelain to laser welded cast pure titanium was measured by the three-point bending test. The interface of titanium and porcelain was investigated by scanning electron microscopy (SEM) and energy depressive X-ray detector (EDX). The non-welded titanium plates were used as comparison. RESULTS: No significant difference of the bond strength was found between laser-welded samples [(46.85 +/- 0.76) MPa] and the controls [(41.71 +/- 0.55) MPa] (P > 0.05). The SEM displayed the interface presented similar irregularities with a predominance. The titanium diffused to low-fusing porcelain, while silicon and aluminum diffused to titanium basement. CONCLUSIONS: Laser welding does not affect low-fusing porcelain fused to pure titanium.

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