A comparison of the traditional casting method and the galvanoforming technique in gold alloy prosthetic restorations

Sarna‐Boś, Katarzyna; Batyra, Agata; Oleszek-Listopad, Justyna; Piórkowska-Skrabucha, Beata; Borowicz, Janusz; Szymańska, Jolanta

doi:10.1515/cipms-2015-0071

Cited by 12 publications

(7 citation statements)

References 4 publications

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“…They are frequently used in the manufacture of polycarbonate plastics and epoxy resins, which are used in a variety of consumer products such as baby feeding bottles, toys and epoxy liners for food cans [41]. Epoxy resins are also widely used as dental materials, medical adhesive or coatings, bone material, etc [42,43,44,45,46].…”

Section: Discussionmentioning

confidence: 99%

Biological And Chemical Properties of Cured Epoxy Resins

Rudawska

Sarna‐Boś

Rudawska³

et al. 2021

Preprint

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Introduction: Launched into production over 50 years ago, epoxy resins aroused enormous interest owing to their valuable properties that distinguish them from other polymeric materials. The investigation of biological and chemical effects of direct exposure to the materials under study on the human body may help in the organization of work when dealing with this type of materials.Objectives: The objective of this study is to investigate selected biological and chemical properties of 3 cured epoxy compounds: Epidian 53 epoxy resin with polyaminoamide C curing agent, Epidian 53 epoxy resin with polyaminoamide C curing agent, and aluminum powder, and Epidian 53 epoxy resin with polyaminoamide C curing agent, and copper powder. Methods: The experimental part of this paper describes the preparation and fabrication of adhesive compound samples, from a liquid state to cured plates. The study involved a cytotoxicity analysis (with an ELSA reader), pH measurements (with a pH meter), absorbance measurement over an entire reference wavelength range, and sterilization (on a specially designed test bench) along with microscopic examination of its effects.Results: Cytotoxicity and absorbance analysis results demonstrate that extracts of all tested resin samples do not have cytotoxic effect on the cells of living organisms. The absorbance results over the wavelength range do not indicate the formation of aggregations, which proves that no toxic agents harmful to living organisms are extracted from the resin samples.Conclusion: Results of this study demonstrate that cured epoxy resins are safe materials.

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Section: Discussionmentioning

confidence: 99%

Biological And Chemical Properties of Cured Epoxy Resins

Rudawska

Sarna‐Boś

Rudawska³

et al. 2021

Preprint

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“…The primary objective of modern dental prosthetic rehabilitation is to create prostheses that are more aesthetically pleasing, functional, and bio-compatible. [ 1 ] Casting is the most common method of molding a metal restoration extraorally. Although the technique of lost wax casting has been employed for millennia to produce metal objects, W.H.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, it is used to create all copings for metal crowns fused to porcelain, as well as elements for partially removable dentures. [ 1 2 ]…”

Section: Introductionmentioning

confidence: 99%

Casting Machines in Dentistry – A Review Part I

Shanthi,

Anoop,

Paul

et al. 2023

Journal of Pharmacy and Bioallied Sciences

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Dental casting machine is an electrical device used to extrude molten materials to fabricate dental prostheses such as crowns, bridges, intracoronal and extracoronal restorations, and removable partial dentures. The casting process basically include melting and casting. Firstly, the solid material is heated in a crucible in temperature-controlled conditions to melt the material to its smelled form. The dental casting process is a complex one with multifaceted steps and equipment. Different types of casting machines are available to produce heat using different sources and techniques. It includes Arc melting, Open flame casting, and Electrical resistance. Arc melting involves the application of an electric or gas discharge on tungsten electrodes, causing the metal base to melt utilizing the heat produced by arcing. Open flame casting or induction melting employs water-cooled alternate current induction coils to induce heat. However, resistance heating uses electric current to melt precious metals.

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“…As a versatile material in the fabrication of fixed dental prostheses, metal-ceramic is often the go-to choice for tooth replacements [ 9 , 10 ]. During the creation of cast restorations, the “lost wax” technique is typically favored for its accuracy and attention to detail [ 11 , 12 ]. The precision of the wax pattern greatly influences the fit and intricacy of the restoration, and inlay waxes, with their ease of manipulation and superior detail reproduction, are widely employed for dental castings.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Distortion in Wax Patterns Fabricated Using Conventional and Electrical Heat Sources: An In Vitro Study

2023

Cureus

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Introduction Tooth loss significantly impacts individuals’ functional capabilities and quality of life. Fixed partial dentures have been a reliable treatment method for tooth replacement, with their fabrication often involving waxes. Waxes play a crucial role in creating a wax pattern in dental restoration; in particular, inlay waxes play a role in the shape, size, and contour of the restorations. However, these waxes have inherent disadvantages, including a high thermal expansion coefficient and propensity to warp or distort over time. This study aimed to compare wax patterns derived from two heat sources, an electric heat source and a conventional flame, to enhance their marginal accuracy and dimensional stability. Methods This study used an abutment resembling a prepared maxillary right central incisor designed via computer-aided design software and milled from zirconia. Inlay wax was melted using either an electrically heated spatula or a conventional flame, poured into a metal sleeve or a cuboidal mold, and allowed to cool to room temperature. The wax patterns were stored at room temperature for one hour and 24 hours. Subsequently, linear and volumetric measurements were taken to assess the shrinkage of the wax patterns. Results Patterns fabricated using the electric heat source showed less shrinkage at both time points for linear shrinkage and at one hour for volumetric shrinkage than those made using the conventional flame. However, by the 24th hour, patterns made with the electric heat source showed more volumetric shrinkage than those made with the conventional heat source. Significant shrinkage was observed between one hour and 24 hours for both heat sources, suggesting that wax patterns should be invested immediately after fabrication for maximum precision. Conclusions The results suggest that electric heating may be a viable alternative to conventional flame for minimizing discrepancies in wax patterns, particularly in the initial stages of wax pattern fabrication. However, prolonged use may lead to greater volumetric shrinkage with electric heating. These findings point to the potential of electric heating as an alternative to conventional flame in dental restorations, although further research is needed to validate and expand upon these findings.

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A comparison of the traditional casting method and the galvanoforming technique in gold alloy prosthetic restorations

Cited by 12 publications

References 4 publications

Biological And Chemical Properties of Cured Epoxy Resins

Biological And Chemical Properties of Cured Epoxy Resins

Casting Machines in Dentistry – A Review Part I

Comparative Evaluation of Distortion in Wax Patterns Fabricated Using Conventional and Electrical Heat Sources: An In Vitro Study

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