Next Article in Journal
Rolling Contact Fatigue Performances of Carburized and High-C Nanostructured Bainitic Steels
Previous Article in Journal
Synthesis and In Vitro Activity Assessment of Novel Silicon Oxycarbide-Based Bioactive Glasses
Open AccessArticle

The Effect of UV Treatment on the Osteoconductive Capacity of Zirconia-Based Materials

1
Department of Prosthodontics, School of Dentistry, Albert-Ludwigs University, Hugstetter Strasse 55, 79106 Freiburg, Germany
2
Institute for Dental Materials and Engineering, University Hospital for Dental Medicine, University of Basel, 4056 Basel, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Jordi Sort
Materials 2016, 9(12), 958; https://doi.org/10.3390/ma9120958
Received: 16 August 2016 / Revised: 14 November 2016 / Accepted: 17 November 2016 / Published: 24 November 2016
(This article belongs to the Section Biomaterials)
Objective: Improvements in the bioactivity of zirconia implants for accelerated healing and reduced morbidity have been of continuing interest in the fields of dentistry and orthopedic surgery. The aim of the present study was to examine whether UV treatment increases the osteoconductivity of zirconia-based materials. Materials and Methods: Smooth and rough zirconia-based disks and cylindrical implants were treated with UV light for 15 min and subsequently placed in rat femurs. Surface characterization was performed using scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and contact angle measurements. Results: In vivo histomorphometry revealed that the percentage of bone-implant contact and the amount of bone volume, formed around UV-treated implants, increased by 3–7-fold for smooth surfaces and by 1.4–1.7-fold for rough surfaces compared to non-treated specimens at Weeks 2 and 4 of healing, respectively. A biomechanical test showed that UV treatment accelerated the establishment of bone-zirconia integration and enhanced the strength of the bone-implant interface by two-fold. Additionally, surface characterization of the zirconia disks revealed that UV treatment decreased the amount of surface carbon and converted the hydrophilic status from hydrophobic to superhydrophilic. Conclusions: This study indicates that UV light pretreatment enhances the osteoconductive capacity of zirconia-based materials. View Full-Text
Keywords: osseointegration; zirconia; implant surface; photofunctionalization; ultraviolet treatment; bone osseointegration; zirconia; implant surface; photofunctionalization; ultraviolet treatment; bone
Show Figures

Figure 1

MDPI and ACS Style

Brezavšček, M.; Fawzy, A.; Bächle, M.; Tuna, T.; Fischer, J.; Att, W. The Effect of UV Treatment on the Osteoconductive Capacity of Zirconia-Based Materials. Materials 2016, 9, 958.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop