Demirel, Münir; Diken Türksayar, Almira Ada; Donmez, Mustafa Borga (2023). Translucency, color stability, and biaxial flexural strength of advanced lithium disilicate ceramic after coffee thermocycling. Journal of esthetic and restorative dentistry, 35(2), pp. 390-396. Wiley 10.1111/jerd.12960
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OBJECTIVE
To compare the color stability, translucency, and biaxial flexural strength (BFS) of differently glazed advanced lithium disilicate (ALDS) with those of lithium disilicate (LDS) and zirconia-reinforced lithium silicate (ZLS) after coffee thermocycling.
MATERIALS AND METHODS
Forty disk-shaped specimens were prepared from three lithium silicate based materials (CEREC Tessera, ALDS; IPS e.max CAD, LDS; Vita Suprinity, ZLS). ALDS specimens were divided into two subgroups according to glazing procedures (reduced glaze duration, ALDS-S and normal glaze duration, ALDS-N), while LDS and ZLS specimens were crystallized and glazed. Color coordinate measurements were performed before and after coffee thermocycling. Color differences (ΔE00 ) and relative translucency parameters (RTP) were calculated. Specimens were then subjected to BFS test. Statistical analysis was performed by using 1- (ΔE00 and BFS) and 2-way (RTP) ANOVA tests (α = 0.05).
RESULTS
ΔE00 values of tested materials were similar (df = 3, F = 0.150, p = 0.929). Two-way ANOVA showed the significant effect of material type, coffee thermocycling, and the interaction between these parameters on RTP values (p < 0.001). Both before and after thermocycling, LDS had the highest (p ≤ 0.001) and ZLS had the lowest (p < 0.001) RTP values, while ALDS-N had higher RTP than ALDS-S (p ≤ 0.001). Among tested materials, only LDS had similar RTP values before and after thermocycling (p = 0.865) as the other materials had lower RTP values after thermocycling (p < 0.001). ALDS-N had higher BFS values than ALDS-S (p = 0.005), while LDS had similar values to ALDS specimens (p ≥ 0.201). ZLS had the highest BFS (p ≤ 0.007).
CONCLUSIONS
ALDS had comparable values to those of other materials. However, reduced glazing duration resulted in decreased translucency and BFS of ALDS.
CLINICAL SIGNIFICANCE
ALDS may be an appropriate restorative material for those patients with increased coffee consumption considering its color stability and ability to maintain translucency, particularly when glazed by using a conventional porcelain furnace.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine |
UniBE Contributor: |
Dönmez, Mustafa-Borga |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1708-8240 |
Publisher: |
Wiley |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
07 Sep 2022 12:51 |
Last Modified: |
25 Feb 2023 00:12 |
Publisher DOI: |
10.1111/jerd.12960 |
PubMed ID: |
36057856 |
Uncontrolled Keywords: |
CAD/CAM color science dental materials prosthodontics |
BORIS DOI: |
10.48350/172694 |
URI: |
https://boris.unibe.ch/id/eprint/172694 |
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