A Comparison of the Marginal Accuracy of Metal Copings Made with Three Different Brands of Nickel-Chromium Alloys and Various Sprue Designs: An Vitro Study.
| Autor: | Rashidi T; Department of Prosthodontics, Dr. Rajesh Ramdasji Kambe Dental College and Hospital, Akola, Maharashtra, India., Bhasin N; Department of Prosthodontics Including Crown and Bridge, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India., Bumb PP; PG Student, Department of Prosthodontics and Crown and Bridge, Teerthanker Mahaveer Dental College and Research Center, Moradabad, Uttar Pradesh, India., Singh A; Department of Pedodontics and Preventive Dentistry, Vananchal Dental College and Hospital, Garhwa, Jharkhand, India., Pawar SJ; BDS Staff, Vananchal Dental College and Hospital, Garhwa, Jharkhand, India., Priyadarshi S; Department of Prosthodontics and Crown and Bridge, Vananchal Dental College and Hospital, Garhwa, Jharkhand, India. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of pharmacy & bioallied sciences [J Pharm Bioallied Sci] 2022 Jul; Vol. 14 (Suppl 1), pp. S825-S828. Date of Electronic Publication: 2022 Jul 13. |
| DOI: | 10.4103/jpbs.jpbs_10_22 |
| Abstrakt: | Introduction: It is important to construct the sprue in a way that ensures that the mold gets an appropriate supply of metal at the right speed. Many manufacturers now offer sprue designs that have not been advocated in textbooks or publications for their normal use. Aim: The goal of this research was to compare the sprue design's marginal fit to that of the other designs. Methods: During this investigation, we attempted to see whether the fabrication of metal copings could be improved. Three sprue designs were used in this research for the assessment of casting accuracy: normal cylindrical, funnel-shaped, and cuboidal or flattened sprue forms. Results: The mean marginal disparity of nickel-chromium (Ni-Cr) alloy copings made by three distinct brands was determined to be statistically insignificant. Conclusion: Within the limitation of the study, it was concluded that the marginal accuracy of metal copings fabricated with three different brands of Ni-Cr alloy did not reveal a statistically significant result. However, out of the three different sprue designs, that is, cylindrical, cuboidal, and funnel shape, the marginal accuracy of cylindrical and cuboidal sprue designs was found to be better than that of the funnel shape sprue design because the funnel shape sprue design is narrow at the point of attachment, thereby increasing the flow pressure and decreasing the turbulence of the molten metal. Competing Interests: There are no conflicts of interest. (Copyright: © 2022 Journal of Pharmacy and Bioallied Sciences.) |
| Databáze: | MEDLINE |
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