Effect of milling procedures in CAD-CAM systems on the color changes of CAD-CAM polymethyl methacrylate resin material as interim material.
Burs
Color
Computer-aided design and computer-aided manufacturing
Polymethylmethacrylate
Journal
BMC oral health
ISSN: 1472-6831
Titre abrégé: BMC Oral Health
Pays: England
ID NLM: 101088684
Informations de publication
Date de publication:
28 May 2024
28 May 2024
Historique:
received:
05
03
2024
accepted:
08
05
2024
medline:
29
5
2024
pubmed:
29
5
2024
entrez:
28
5
2024
Statut:
epublish
Résumé
This study aimed to investigate the effects of new and used burs on CAD-CAM PMMA resin color changes following thermocycling. Twenty disk-shaped specimens (10 × 2 mm) were made using a single brand of CAD-CAM polymethyl methacrylate resin (Polident) for the color test. Group N consisted of half of the specimens that were machined using the new tungsten carbide bur set, and Group U consisted of the specimens that were milled using the used bur set (500 machining time). A color test was performed on the specimens both before and after thermocycling. For the statistical analysis, the Kruskal-Wallis and Dunn Pairwise Comparison tests were employed. The ∆E* value of specimens (2.057) milled with the used bur was higher than those of specimens milled with the new bur (0.340), but this value is within clinically acceptable limits. After thermocycling, specimens milled with the utilized burs had the greatest L* (93.850) and b* (5.000) values. After thermocycling, statistically significant differences were discovered between Group N and Group U as well as between specimens milled with the utilized bur before and after thermocycling. Thermocycling process have an effect on the mean ∆E values of specimens milled with the used carbide bur, but these ∆E* values were not statistically significant. The color and clinical performance of CAD-CAM restorations may be affected by variations in CAD-CAM milling bur properties, particularly those related to their frequent use.
Identifiants
pubmed: 38807102
doi: 10.1186/s12903-024-04350-2
pii: 10.1186/s12903-024-04350-2
doi:
Substances chimiques
Polymethyl Methacrylate
9011-14-7
Dental Materials
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
618Informations de copyright
© 2024. The Author(s).
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