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PubMed · 2689334

Modified casting technique for osseointegrated fixed prosthesis fabrication: a preliminary report.

S M Parel
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Abstract

Creating a predictably passive fit of long-span castings supported by osseointegrated implants can be a difficult technical accomplishment. A preliminary report of short-term experience using a modified casting technique that incorporates several new modifications to ensure fit and accuracy is presented. This technique ensures strength in areas where stress concentrations are greatest, while maintaining the philosophy of stress distribution through splinting across the length of the span.

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Dental Casting TechniqueDental Implantation, EndosseousDental Stress AnalysisDenture DesignDenture, CompleteHumansJournal Article

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S M Parel. 1989. Modified casting technique for osseointegrated fixed prosthesis fabrication: a preliminary report.. https://pubmed.ncbi.nlm.nih.gov/2689334/

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PubMed2006

[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.

Dental Casting Technique↗