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
. 2018 May 30;11(6):925.
doi: 10.3390/ma11060925.

Mechanical and Morphological Effect of Plant Based Antimicrobial Solutions on Maxillofacial Silicone Elastomer

Sophia Tetteh  1 , Richard J Bibb  2 , Simon J Martin  3
Affiliations

Mechanical and Morphological Effect of Plant Based Antimicrobial Solutions on Maxillofacial Silicone Elastomer

Sophia Tetteh et al. Materials (Basel). .

Abstract

The objective of this study was to determine the effect of plant based antimicrobial solutions specifically tea tree and Manuka oil on facial silicone elastomers. The purpose of this in vitro study was to evaluate the effect of disinfection with plant extract solution on mechanical properties and morphology on the silicone elastomer. Test specimens were subjected to disinfection using tea tree oil, Manuka oil and the staphylococcus epidermidis bacteria. Furthermore, a procedure duration was used in the disinfection process to simulate up to one year of usage. Over 500 test specimens were fabricated for all tests performed namely hardness, elongation, tensile, tear strength tests, visual inspection and lastly surface characterization using SEM. A repeated measures ANOVA revealed that hardness and elongation at break varied significantly over the time period, whereas this was not observed in the tear and tensile strength parameters of the test samples.

Keywords: antimicrobial solution; facial prostheses; mechanical testing; tensile strength.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
(a) line plot displaying means; standard deviation error bars and offset (+5—SiAu; +10—SiTTO; +15—SiMO; +20—SiTTOBAu; +25—SiMOBAu) for Shore A hardness samples. (b) line plot displaying means; standard deviation error bars and offset (+5 MPa—SiAu; +10 MPa —SiTTO; +15 MPa —SiMO; +20 MPa —SiTTOBAu; +25 MPa —SiMOBAu) for tensile strength samples; (c) line plot displaying means; standard deviation error bars and offset (+100%—SiAu; +200%—SiTTO; +300%—SiMO; +400%—SiTTOBAu; +500%—SiMOBAu) for elongation at break samples; (d) line plots displaying means; standard deviation error bars and offset (+5 kN/m —SiAu; +10 kN/m —SiTTO; +15 kN/m —SiMO; +20 kN/m —SiTTOBAu; +25 kN/m —SiMOBAu) for tear strength samples.
Figure 1
Figure 1
(a) line plot displaying means; standard deviation error bars and offset (+5—SiAu; +10—SiTTO; +15—SiMO; +20—SiTTOBAu; +25—SiMOBAu) for Shore A hardness samples. (b) line plot displaying means; standard deviation error bars and offset (+5 MPa—SiAu; +10 MPa —SiTTO; +15 MPa —SiMO; +20 MPa —SiTTOBAu; +25 MPa —SiMOBAu) for tensile strength samples; (c) line plot displaying means; standard deviation error bars and offset (+100%—SiAu; +200%—SiTTO; +300%—SiMO; +400%—SiTTOBAu; +500%—SiMOBAu) for elongation at break samples; (d) line plots displaying means; standard deviation error bars and offset (+5 kN/m —SiAu; +10 kN/m —SiTTO; +15 kN/m —SiMO; +20 kN/m —SiTTOBAu; +25 kN/m —SiMOBAu) for tear strength samples.
Figure 2
Figure 2
Photomicrograph of test samples at magnification of 5 K. (a) SiTTOBAu at Day 1 (b) SiTTOBAu at 6 months (c) SiTTOBAu at 12 months (d) SiMOBAu at Day 1 (e) SiMOBAu at 6 months and (f) SiMOBAu at 12 months.
See this image and copyright information in PMC

References

    1. Pigno M.A., Goldschmidt M.C., Lemon J.C. The efficacy of antifungal agents incorporated into a facial prosthetic silicone elastomer. J. Prosthet. Dent. 1994;71:295–300. doi: 10.1016/0022-3913(94)90470-7. - DOI - PubMed
    1. Micheline Dos Santos D., Goiato M.C., Moreno A., Pesqueira A.A., Dekon S.F.D.C., Guiotti A.M. Effect of addition of pigments and opacifier on the hardness, absorption, solubility and surface degradation of facial silicone after artificial ageing. Polym. Degrad. Stab. 2012;97:1249–1253. doi: 10.1016/j.polymdegradstab.2012.05.033. - DOI
    1. Hatamleh M.M., Watts D.C. Bonding of maxillofacial silicone elastomers to an acrylic substrate. Dent. Mater. 2010;26:387–395. doi: 10.1016/j.dental.2010.01.001. - DOI - PubMed
    1. Al-Harbi F.A., Ayad N.M., Saber M.A., Arrejaie A.S., Morgano S.M. Mechanical behavior and color change of facial prosthetic elastomers after outdoor weathering in a hot and humid climate. J. Prosthet. Dent. 2015;113:146–151. doi: 10.1016/j.prosdent.2014.09.008. - DOI - PubMed
    1. Han Y., Zhao Y., Xie C., Powers J.M., Kiat-Amnuay S. Color stability of pigmented maxillofacial silicone elastomer: Effects of nano-oxides as opacifiers. J. Dent. 2010;38(Suppl. 2):e100–e105. doi: 10.1016/j.jdent.2010.05.009. - DOI - PubMed

LinkOut - more resources