Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: An in vitro study
| Autor: | Seung-Min You, Ji-Hwan Kim, Seung-Gyu You, Beom-Il Lee, Dong-Yeon Kim |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
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medicine.medical_treatment 0206 medical engineering 02 engineering and technology Trueness Crown (dentistry) Post-curing time 03 medical and health sciences 0302 clinical medicine Interim medicine In vitro study Dentistry (miscellaneous) Post curing Mathematics Orthodontics Dental laboratory Interim crown Significant difference 030206 dentistry Precision 020601 biomedical engineering Digital light processing Digital Light Processing Original Article Oral Surgery |
| Zdroj: | The Journal of Advanced Prosthodontics |
| ISSN: | 2005-7814 2005-7806 |
| Popis: | PURPOSE This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to post-curing time. MATERIALS AND METHODS A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute post-curing interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05). RESULTS In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P |
| Databáze: | OpenAIRE |
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