Comparison of wear and marginal fitness of 3D-printed deciduous molar crowns: An <i>in vitro</i> study
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- LEI Bin
- Department of pedodontics, Stomatological Hospital, Southern Medical University School of Stomatology, Jinan University
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- XIONG Huacui
- Department of pedodontics, Stomatological Hospital, Southern Medical University
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- CHEN Ke
- Department of pedodontics, Stomatological Hospital, Southern Medical University
抄録
<p>This study aimed to evaluate the wear resistance of primary tooth enamel and 3 kinds of 3D printing materials and to compare the marginal fitness and internal suitability of prefabricated all-ceramic crowns, computer-aided design/manufacturing (CAD/CAM) all-ceramic crowns, and three 3D-printed deciduous molar crowns. Multifunctional friction wear testing machine was used to image the wear surface of the sample and calculate the maximum wear depth and volume loss value of each sample. The internal fit evaluation used the silicon replica method, The four points were measured using scanning electron microscopy (SEM). The obtained data were statistically analyzed using ANOVA and Tukey HSD-test with a fully randomized design (p<0.05). The results showed the wear resistance of E-Dent400 was better than that of PEEK and three different 3D printed materials have good wear resistance compared with the primary tooth enamel. The measured values at M1 and M4 of E-Dent400 were both the smallest.</p>
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 43 (2), 227-234, 2024-03-25
一般社団法人 日本歯科理工学会