Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study
In Purpose: The fabrication technique can influence the mechanical properties of Cobalt-Chromium (Co-Cr) dental alloys. Hence, the present study aims to determine the corrosion resistance and thermal expansion of alloys manufactured using three contemporary techniques. Material and Methods: A total...
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| Format: | Article |
| Language: | English |
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Universidad de Concepción.
2022-10-01
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| Series: | Journal of Oral Research |
| Subjects: | |
| Online Access: | https://joralres.com/index.php/JOralRes/article/view/joralres.2022.058/1079 |
| _version_ | 1797860428657721344 |
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| author | Bonothu Balaji Dileep Nag Vinnakota Vijaya Sankar V Srinivas Rao Pottem |
| author_facet | Bonothu Balaji Dileep Nag Vinnakota Vijaya Sankar V Srinivas Rao Pottem |
| author_sort | Bonothu Balaji |
| collection | DOAJ |
| description | In Purpose: The fabrication technique can influence the mechanical properties of Cobalt-Chromium (Co-Cr) dental alloys. Hence, the present study aims to determine the corrosion resistance and thermal expansion of alloys manufactured using three contemporary techniques.
Material and Methods: A total of nine specimens of Co-Cr alloy were prepared according to ISO 22674 by each one of the three manufacturing processes (three in each process); conventional casting, direct metal laser sintering (DMLS) and milling (MIL). All these specimens were tested for coefficient of thermal expansion and corrosion resistance. The data was tabulated and analyzed statistically.
Results: The difference in the thermal expansion of alloys fabricated using three techniques was non-significant at almost all the temperatures from 50 ºC to 950 ºC (p>0.05), except 450 ºC and 600 °C. The polarization resistance of specimens manufactured using the conventional method was more compared to DMLS and MIL at pH 5 (Conventional>MIL>DMLS) (p<0.001).
Conclusion: The thermal expansion behavior of alloys manufactured using the three selected techniques were similar, whereas, at acidic pH, the corrosion resistance of conventional and MIL were better than the DMLS. |
| first_indexed | 2024-04-09T21:46:46Z |
| format | Article |
| id | doaj.art-8323d7acf3f745268b00095cfa667786 |
| institution | Directory Open Access Journal |
| issn | 0719-2460 0719-2479 |
| language | English |
| last_indexed | 2024-04-09T21:46:46Z |
| publishDate | 2022-10-01 |
| publisher | Universidad de Concepción. |
| record_format | Article |
| series | Journal of Oral Research |
| spelling | doaj.art-8323d7acf3f745268b00095cfa6677862023-03-24T22:15:55ZengUniversidad de Concepción.Journal of Oral Research0719-24600719-24792022-10-01115112https://doi.org/10.17126/joralres.2022.058Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro studyBonothu Balaji0Dileep Nag Vinnakota1https://orcid.org/0000-0001-9872-5162Vijaya Sankar V2Srinivas Rao Pottem3Department of Prosthodontics, Narayana Dental College and Hospital, Nellore; Andhra Pradesh, IndiaDepartment of Prosthodontics, Narayana Dental College and Hospital, Nellore; Andhra Pradesh, IndiaDepartment of Prosthodontics, Narayana Dental College and Hospital, Nellore; Andhra Pradesh, IndiaDepartment of Prosthodontics, Narayana Dental College and Hospital, Nellore; Andhra Pradesh, IndiaIn Purpose: The fabrication technique can influence the mechanical properties of Cobalt-Chromium (Co-Cr) dental alloys. Hence, the present study aims to determine the corrosion resistance and thermal expansion of alloys manufactured using three contemporary techniques. Material and Methods: A total of nine specimens of Co-Cr alloy were prepared according to ISO 22674 by each one of the three manufacturing processes (three in each process); conventional casting, direct metal laser sintering (DMLS) and milling (MIL). All these specimens were tested for coefficient of thermal expansion and corrosion resistance. The data was tabulated and analyzed statistically. Results: The difference in the thermal expansion of alloys fabricated using three techniques was non-significant at almost all the temperatures from 50 ºC to 950 ºC (p>0.05), except 450 ºC and 600 °C. The polarization resistance of specimens manufactured using the conventional method was more compared to DMLS and MIL at pH 5 (Conventional>MIL>DMLS) (p<0.001). Conclusion: The thermal expansion behavior of alloys manufactured using the three selected techniques were similar, whereas, at acidic pH, the corrosion resistance of conventional and MIL were better than the DMLS.https://joralres.com/index.php/JOralRes/article/view/joralres.2022.058/1079chromium alloyscorrosiontemperaturesurface propertieslasersdental alloys |
| spellingShingle | Bonothu Balaji Dileep Nag Vinnakota Vijaya Sankar V Srinivas Rao Pottem Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study Journal of Oral Research chromium alloys corrosion temperature surface properties lasers dental alloys |
| title | Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study |
| title_full | Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study |
| title_fullStr | Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study |
| title_full_unstemmed | Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study |
| title_short | Thermal expansion and corrosion resistance of cobalt-chromium alloys fabricated by contemporary manufacturing processes. An in vitro study |
| title_sort | thermal expansion and corrosion resistance of cobalt chromium alloys fabricated by contemporary manufacturing processes an in vitro study |
| topic | chromium alloys corrosion temperature surface properties lasers dental alloys |
| url | https://joralres.com/index.php/JOralRes/article/view/joralres.2022.058/1079 |
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