Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Aug 5;15(15):5402.
doi: 10.3390/ma15155402.

Ceramic and Composite Polishing Systems for Milled Lithium Disilicate Restorative Materials: A 2D and 3D Comparative In Vitro Study

Carlos A Jurado  1 , Clarisa Amarillas-Gastelum  2 , Kelvin I Afrashtehfar  3   4 , Liliana Argueta-Figueroa  5 , Nicholas G Fischer  6 , Abdulrahman Alshabib  7   8
Affiliations

Ceramic and Composite Polishing Systems for Milled Lithium Disilicate Restorative Materials: A 2D and 3D Comparative In Vitro Study

Carlos A Jurado et al. Materials (Basel). .

Abstract

Purpose: This study aims to evaluate the effectiveness of two ceramic and two composite polishing systems for a novel chairside computer-aided design/computer-aided manufacturing (CAD/CAM) lithium disilicate ceramic with three-dimensional and two-dimensional microscopy images. This ceramic material can be used for implant-supported or tooth-borne single-unit prostheses. Materials and Methods: Sixty flat samples of novel chairside CAD/CAM reinforced lithium disilicate ceramic (Amber Mill, Hass Bio) were divided into five groups (n = 15/group) and treated as follows: Group 1 (NoP), no polished treatment; group 2 (CeDi), polished with ceramic Dialite LD (Brasseler USA); group 3, (CeOp) polished with ceramic OptraFine (Ivoclar Vivadent); group 4, (CoDi) polished with composite DiaComp (Brasseler USA), and group 5 (CoAs), polished with composite Astropol (Ivoclar Vivadent). The polished ceramic surface topography was observed and measured with three-dimensional and two-dimensional images. Results: All polishing systems significantly reduced the surface roughness compared with the non-polished control group (Sa 1.15 μm). Group 2 (CeDi) provided the smoothest surface arithmetical mean eight with 0.32 μm, followed by group 3 (CeOp) with 0.34 μm. Group 5 (CoAs) with 0.52 μm provided the smoothest surface among the composite polishing kits. Group 4 (CoDi) with 0.66 μm provided the least smooth surface among all polishing systems tested. Conclusions: Despite the effectiveness of ceramic polishing systems being superior to composite polishing systems of the CAD/CAM lithium disilicate restorative material, both polishing systems significantly improved the smoothness.

Keywords: CAD-CAM; dental polishing; dental prosthesis; disilicate lithium; esthetic dentistry.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Three-dimensional images of chairside CAD/CAM reinforced lithium disilicate ceramic; (a) non-polished; (b) polished with Dialite ceramic polishing; (c) polished with OptraFine ceramic polishing; (d) polished with Diacomp composite polishing; (e) polished with Astropol composite polishing.
Figure 2
Figure 2
Scanning electron microscopy images of chairside CAD/CAM reinforced lithium disilicate ceramic; (a) non-polished; (b) polished with Dialite ceramic polishing; (c) polished with OptraFine ceramic polishing; (d) polished with Diacomp composite polishing; (e) polished with Astropol composite polishing.
See this image and copyright information in PMC

References

    1. Duret F., Preston J.D. CAD/CAM imaging in dentistry. Curr. Opin. Dent. 1991;1:150–154. - PubMed
    1. Priest G. Virtual-designed and computer-milled implant abutments. J. Oral Maxillofac. Surg. 2005;63:22–32. doi: 10.1016/j.joms.2005.05.158. - DOI - PubMed
    1. Mörmann W.H., Bindl A. All-ceramic, chair-side computer-aided design/computer-aided machining restorations. Dent. Clin. N. Am. 2002;46:405–426. doi: 10.1016/S0011-8532(01)00007-6. - DOI - PubMed
    1. Jurado C., Sayed M., Fu C.-C., Villalobos-Tinoco J., Tsujimoto A. Computer-aided design and computer-aided manufacturing (cad/cam) complete dentures for atrophic alveolar ridges: Workflow combining conventional and novel techniques. Cureus. 2022;14:e21093. doi: 10.7759/cureus.21093. - DOI - PMC - PubMed
    1. Yang J.W., Liu Q., Yue Z.G., Hou J., Afrashtehfar K.I. Digital workflow for full-arch immediate implant placement using a stackable surgical guide fabricated using SLM technology. J. Prosthodont. 2021;30:645–650. doi: 10.1111/jopr.13375. - DOI - PubMed