Evaluation of the accuracy of internal and marginal surfaces of metal copings manufactured using selective laser melting and lost-wax casting methods
Year: 2024
Type: article
Abstract: Results: The mean root mean square (RMS) values of trueness of the internal and marginal surfaces in the LWC method were 37.12±1.21and 59.92±4.48μm, respectively, which were higher than the values of 20.73±1.07 and 44.61±2.67 μm, respectively, in the SLM method, with the difference being statistically significant (p<0.001 and p=0.023, respectively).The internal surface mean RMS values of precision in the LWC and SLM groups were 22.39±2.87and 21.16±1.25 μm, respectively, which showed no statistically significant difference (p=0.872);however, the marginal surface mean RMS values were 50.97±2.24and 22.11±1.19μm, respectively, indicating a statistically higher precision in the SLM group (p<0.001).Conclusion: The internal and marginal surfaces of metal copings manufactured using LWC and SLM methods showed significantly different accuracy, except for internal surface precision.Both methods yielded clinically acceptable values.
Authors: Hee-Ryung Kim, Mi-Jun Noh, Wan-Sun Lee, Ji-Hwan Kim
Institutions: Korea University, Bucheon University
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: hybrid
OpenAlex ID: W4405902494