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논문 기본 정보

자료유형
학술저널
저자정보
Leonardo Ciocca (Alma Mater Studiorum University of Bologna Bologna Italy) Mattia Maltauro (Department of Management and Engineering University of Padova Vicenza Italy) Lorenzo Breschi (Department of Biomedical and Neuromotor Science Alma Mater Studiorum University of Bologna Bologna Italy) Angela Montanari (Department of Statistical Sciences Alma Mater Studiorum University of Bologna Bologna Italy) Laura Anderlucci (Department of Statistical Sciences Alma Mater Studiorum University of Bologna Bologna Italy) Roberto Meneghello (Department of Management and Engineering University of Padova Vicenza Italy)
저널정보
대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제15권 제2호
발행연도
2023.4
수록면
55 - 62 (8page)
DOI
https://doi.org/10.4047/jap.2023.15.2.55

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Purpose. The aim of this study is to evaluate the accuracy of removable partial denture (RPD) frameworks produced using different digital protocols. Materials and methods. 80 frameworks for RPDs were produced using CAD-CAM technology and divided into four groups of twenty (n = 20): Group 1, Titanium frameworks manufactured by digital metal laser sintering (DMLS); Group 2, Co-Cr frameworks manufactured by DMLS; Group 3, Polyamide PA12 castable resin manufactured by multi-jet fusion (MJF); and Group 4, Metal (Co-Cr) casting by using lost-wax technique. After the digital acquisition, eight specific areas were selected in order to measure the ∆-error value at the intaglio surface of RPD. The minimum value required for point sampling density (0.4 mm) was derived from the sensitivity analysis. The obtained ∆-error mean value was used for comparisons: 1. between different manufacturing processes; 2. between different manufacturing techniques in the same area of interest (AOI); and 3. between different AOI of the same group. Results. The ∆-error mean value of each group ranged between -0.002 (Ti) and 0.041 (Co-Cr) mm. The Pearson’s Chi-squared test revealed significant differences considering all groups paired two by two, except for group 3 and 4. The multiple comparison test documented a significant difference for each AOI among group 1, 3, and 4. The multiple comparison test showed significant differences among almost all different AOIs of each group. Conclusion. All ∆-mean error values of all digital protocols for manufacturing RPD frameworks optimally fit within the clinical tolerance limit of trueness and precision. [J Adv Prosthodont 2023;15:55-62]

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