Jurado, Carlos A; Afrashtehfar, Kelvin I; Hyer, Jared; Alhotan, Abdulaziz (2023). Effect of sintering on the translucency of CAD-CAM lithium disilicate restorations: a comparative in vitro study. Journal of prosthodontics, 32(9), pp. 861-866. Wiley 10.1111/jopr.13644
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Journal_of_Prosthodontics_-_2023_-_Jurado_-_Effect_of_sintering_on_the_translucency_of_CAD_CAM_lithium_disilicate.pdf - Accepted Version Available under License Publisher holds Copyright. Download (1MB) | Preview |
PURPOSE
The available independent data on the translucency of novel pre and fully sintered chair-side computer-aided design and computer-aided manufacturing (CAD-CAM) lithium disilicate are limited. This comparative in vitro study evaluated the translucency degree of pre and fully sintered chairside CAD-CAM lithium disilicate crowns after optional, required, and additional firing processes.
MATERIALS AND METHODS
One hundred and five maxillary left central incisor crowns manufactured by three different CAD-CAM lithium disilicate brands shade A1 were assigned into 7 groups as follows (n = 15): (1) n!ce Straumann without sintering; (2) n!ce Straumann with one additional sintering process; (3) n!ce Straumann with two additional sintering processes; (4) Amber Mill with one sintering process; (5) Amber Mill with two sintering processes; (6) IPS e.max CAD with one sintering process; (7) IPS e.max CAD with two sintering processes. The translucency of all crowns was evaluated with a color imaging spectrophotometer. All statistical analyses were performed using statistical software. A standard level of significance was set at α < 0.05.
RESULTS
All the milled crowns presented different degrees of translucency, and additional sintering processes altered it. IPS E.max CAD with two (4.33 ± 0.26) and one (4.01 ± 0.15) sintering processes displayed the highest translucency, whereas n!ce Straumann with no sintering process provided the lowest value (2.82 ± 0.16).
CONCLUSIONS
The translucency of chairside lithium disilicate single-unit full-coverage restorations manufactured with subtractive technology was significantly influenced by the brand and the number of sintering processes. The traditional presintered IPS e.max CAD and the fully crystallized glass-ceramic n!ce Straumann considerably increased the translucency after one additional firing process, whereas Amber Mill decreased its translucency. This article is protected by copyright. All rights reserved.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology |
UniBE Contributor: |
Afrashtehfar, Kelvin Ian |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1532-849X |
Publisher: |
Wiley |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
11 Jan 2023 16:16 |
Last Modified: |
09 Jan 2024 00:25 |
Publisher DOI: |
10.1111/jopr.13644 |
PubMed ID: |
36609993 |
Uncontrolled Keywords: |
CAD-CAM Computer-aided manufacturing Subtractive computer-aided manufacturing cosmetic dentistry dental ceramics disilicate lithium esthetic dentistry full-coverage restoration in vitro machined milled pre-sinterization single crown sintering translucency |
BORIS DOI: |
10.48350/177035 |
URI: |
https://boris.unibe.ch/id/eprint/177035 |
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