Can Oral Bacteria and Mechanical Fatigue Degrade Zirconia Dental Implants in Vitro?

Simple item page
dc.contributor.ORCID0000-0002-2398-5979 (Siddiqui, DA)
dc.contributor.ORCID0000-0002-0389-0833 (Rodrigues, DC)
dc.contributor.authorSiddiqui, Danyal A.
dc.contributor.authorSridhar, Sathyanarayanan
dc.contributor.authorWang, Frederick
dc.contributor.authorJacob, Joel J.
dc.contributor.authorRodrigues, Danieli C.
dc.contributor.utdAuthorSiddiqui, Danyal A.
dc.contributor.utdAuthorSridhar, Sathyanarayanan
dc.contributor.utdAuthorWang, Frederick
dc.contributor.utdAuthorJacob, Joel J.
dc.contributor.utdAuthorRodrigues, Danieli C.
dc.date.accessioned2020-03-30T16:31:36Z
dc.date.available2020-03-30T16:31:36Z
dc.date.issued2019-05-15
dc.descriptionDue to copyright restrictions and/or publisher's policy full text access from Treasures at UT Dallas is limited to current UTD affiliates (use the provided Link to Article).
dc.descriptionSupplementary material is available on publisher's website. Use the DOI link below.
dc.description.abstractZirconia (ZrO₂) is an emerging alternative to titanium for dental implant systems due to its material properties including high mechanical strength and chemical stability. However, oral environmental factors such as bacterial adhesion and mechanical fatigue may trigger low-temperature degradation of ZrO₂, leading to reduced mechanical strength and potential implant fracture. Although failure modes of ZrO₂ in orthopedic applications have been studied, they have yet to be thoroughly investigated in the context of dental implant systems. Thus, the goal of the present study was to assess the surface of ZrO₂ dental implants for signs of degradation after exposure to oral bacteria and oral bacteria in combination with mechanical fatigue. ZrO₂ dental implants were subjected to 30-day immersion in (i) early or (ii) late colonizing oral bacteria or (iii) were mechanically loaded for 2 × 106 cycles with oral bacteria in circulation. Optical microscopy, Raman microscopy, and X-ray photoelectron spectroscopy (XPS) were used to evaluate the surface morphology, phase composition, and chemical composition, respectively. Post-immersion, all implants exhibited minimal changes in surface features, and all loaded implants survived cyclic fatigue tests. All implants had <1% monoclinic phase at the collar, junction, and screw regions, excluding the screw threads, for which monoclinic phase was significantly higher but <10%. XPS revealed an increase in carbon- and nitrogen-based organic debris on the implants exposed to early colonizers as compared to those immersed in late colonizers or synergistically with mechanical loading. Within the limitations of the present study, ZrO₂ is a suitable alternative material for dental implant systems based on its ability to resist both physical and chemical degradation imposed by oral bacteria and applied cyclic loads. © 2019 American Chemical Society.
dc.description.departmentErik Jonsson School of Engineering and Computer Science
dc.description.sponsorshipInternational Team for Implantology (ITI), Basel, Switzerland, Grant No. 1175_2016; National Science Foundation Graduate Research Fellowship under Grant No. 1746053
dc.identifier.bibliographicCitationSiddiqui, D. A., S. Sridhar, F. Wang, J. J. Jacob, et al. 2019. "Can Oral Bacteria and Mechanical Fatigue Degrade Zirconia Dental Implants in Vitro?." ACS Biomaterials Science and Engineering 5(6): 2821-2833, doi: 10.1021/acsbiomaterials.9b00223
dc.identifier.issn2373-9878
dc.identifier.issue6
dc.identifier.urihttp://dx.doi.org/10.1021/acsbiomaterials.9b00223
dc.identifier.urihttps://hdl.handle.net/10735.1/7650
dc.identifier.volume5
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.rights©2019 American Chemical Society
dc.source.journalACS Biomaterials Science and Engineering
dc.subjectBiodegradation
dc.subjectOxides
dc.subjectDental implants
dc.subjectBacterial adhesion
dc.subjectDental implants
dc.subjectZirconium oxide
dc.subjectMetals in surgery
dc.subjectScrew-threads
dc.subjectMetals—Thermal fatigue
dc.subjectX ray photoelectron spectroscopy
dc.titleCan Oral Bacteria and Mechanical Fatigue Degrade Zirconia Dental Implants in Vitro?
dc.type.genrearticle

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
JECS-4062-261108.22-LINK.pdf
Size:
166.33 KB
Format:
Adobe Portable Document Format
Description:
Link to Article
Download

Collections

Rodrigues, Danieli C.