1
|
Main K, Khan MA, Nuutinen JP, Young AM, Liaqat S, Muhammad N. Evaluation of modified dental composites as an alternative to Poly(methyl methacrylate) bone cement. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04677-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
2
|
Hamajima K, Ozawa R, Saruta J, Saita M, Kitajima H, Taleghani SR, Usami D, Goharian D, Uno M, Miyazawa K, Goto S, Tsukinoki K, Ogawa T. The Effect of TBB, as an Initiator, on the Biological Compatibility of PMMA/MMA Bone Cement. Int J Mol Sci 2020; 21:ijms21114016. [PMID: 32512780 PMCID: PMC7312717 DOI: 10.3390/ijms21114016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/24/2020] [Accepted: 06/02/2020] [Indexed: 12/17/2022] Open
Abstract
Acrylic bone cement is widely used in orthopedic surgery for treating various conditions of the bone and joints. Bone cement consists of methyl methacrylate (MMA), polymethyl methacrylate (PMMA), and benzoyl peroxide (BPO), functioning as a liquid monomer, solid phase, and polymerization initiator, respectively. However, cell and tissue toxicity caused by bone cement has been a concern. This study aimed to determine the effect of tri-n-butyl borane (TBB) as an initiator on the biocompatibility of bone cement. Rat spine bone marrow-derived osteoblasts were cultured on two commercially available PMMA-BPO bone cements and a PMMA-TBB experimental material. After a 24-h incubation, more cells survived on PMMA-TBB than on PMMA-BPO. Cytomorphometry showed that the area of cell spread was greater on PMMA-TBB than on PMMA-BPO. Analysis of alkaline phosphatase activity, gene expression, and matrix mineralization showed that the osteoblastic differentiation was substantially advanced on the PMMA-TBB. Electron spin resonance (ESR) spectroscopy revealed that polymerization radical production within the PMMA-TBB was 1/15–1/20 of that within the PMMA-BPO. Thus, the use of TBB as an initiator, improved the biocompatibility and physicochemical properties of the PMMA-based material.
Collapse
Affiliation(s)
- Kosuke Hamajima
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 1-1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan; (K.M.); (S.G.)
| | - Ryotaro Ozawa
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Oral Interdisciplinary Medicine (Prosthodontics & Oral Implantology), Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka, Kanagawa 238-8580, Japan
| | - Juri Saruta
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka, Kanagawa 238-8580, Japan;
| | - Makiko Saita
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Oral Interdisciplinary Medicine (Prosthodontics & Oral Implantology), Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka, Kanagawa 238-8580, Japan
| | - Hiroaki Kitajima
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004, Japan
| | - Samira Rahim Taleghani
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
| | - Dan Usami
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
| | - Donya Goharian
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
| | - Mitsunori Uno
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Department of Prosthodontics, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry, 1851-1 Hozumi, Mizuho, Gifu 501-0296, Japan
| | - Ken Miyazawa
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 1-1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan; (K.M.); (S.G.)
| | - Shigemi Goto
- Department of Orthodontics, School of Dentistry, Aichi Gakuin University, 1-1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan; (K.M.); (S.G.)
| | - Keiichi Tsukinoki
- Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka, Yokosuka, Kanagawa 238-8580, Japan;
| | - Takahiro Ogawa
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA; (K.H.); (R.O.); (J.S.); (M.S.); (H.K.); (S.R.T.); (D.U.); (D.G.); (M.U.)
- Correspondence: ; Tel.: +1-310-825-0727; Fax: +1-310-825-6345
| |
Collapse
|
3
|
Goñi I, Rodríguez R, García-Arnáez I, Parra J, Gurruchaga M. Preparation and characterization of injectable PMMA-strontium-substituted bioactive glass bone cement composites. J Biomed Mater Res B Appl Biomater 2017; 106:1245-1257. [PMID: 28580716 DOI: 10.1002/jbm.b.33935] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 12/31/2022]
Abstract
In most minimally-invasive procedures used to address severe pain arising from compression fractures of the vertebral bodies, such as percutaneous vertebroplasty (PVP), a poly(methyl methacrylate) (PMMA) bone cement is used. Shortcomings of this type of cement, such as high exotherm temperature and lack of bioactivity, are well known. We prepared different formulations of a composite bone cement, whose solid constituents consisted of PMMA beads and particles of a bioactive glass (BG), where 0-20%(w/w) of the calcium component was substituted by strontium. The difference between the formulations was in the relative amounts of the solid phase constituents and in the Sr-content of BG. We determined the influence of the mixture of solid phase constituents of the cement formulation on a collection of properties, such as maximum exotherm temperature (Tmax ), setting time (tset ), and injectability (I). The selection of the PMMA beads was crucial to obtain cement composite formulations capable to be efficiently injected. Results allowed to select nine solid phase mixtures to be further tested. Then, we determined the influence of the composition of these composite bone cements on Tmax , tset , I, and cell proliferation. The results showed that the performance of various of the selected composite cements was better than that of PMMA cement reference, with lower Tmax , lower tset , and higher I. We found that incorporation of Sr-substituted BGs into these materials bestows bioactivity properties associated with the role of Sr in bone formation, leading to some composite cement formulations that may be suitable for use in PVP. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1245-1257, 2018.
Collapse
Affiliation(s)
- I Goñi
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - R Rodríguez
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - I García-Arnáez
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| | - J Parra
- Unidad Asociada CAA-CSIC. Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN). Complejo Asistencial de Ávila. Hospital Provincial., 05071, Ávila, Spain
| | - M Gurruchaga
- Department of Science and Technology of Polymers, POLYMAT (Institute of Polymeric Materials), Faculty of Chemistry, University of The Basque Country (UPV/EHU), P°Manuel de Lardizabal, 3., 20018, San Sebastián, Spain
| |
Collapse
|
4
|
Salarian M, Xu WZ, Bohay R, Lui EMK, Charpentier PA. Angiogenic Rg 1 /Sr-Doped TiO 2 Nanowire/Poly(Propylene Fumarate) Bone Cement Composites. Macromol Biosci 2016; 17. [PMID: 27618224 DOI: 10.1002/mabi.201600156] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/29/2016] [Indexed: 12/11/2022]
Abstract
A new approach is provided for preparing radiopaque and angiogenic poly(propylene fumarate) (PPF) bone cements by integrating Sr-doped n-TiO2 nanowires and ginsenoside Rg1 suitable for treating osteonecrosis. High aspect ratio radiopaque TiO2 -nanowires are synthesized by strontium doping in supercritical CO2 for the first time, showing a new phase, SrTiO3 . PPF is synthesized using a transesterification method by reacting diethyl fumarate and propylene glycol, then functionalized using maleic anhydride to produce terminal carboxyl groups, which are subsequently linked to the nanowires. The strong interfacial adhesion between functionalized PPF and nanowires is examined by scanning electron microscopy, Fourier transform infrared, X-ray photoelectron spectroscopy, thermal analysis, and mechanical testing. An angiogenic modulator, ginsenoside Rg1 , is integrated into the bone cement formulation with the mechanical properties, radiopacity, drug release, and angiogenesis behavior of the formed composites explored. The results show superior radiopacity and excellent release of ginsenoside Rg1 in vitro, as well as a dose-dependent increase in the branching point numbers. The present study suggests this new methodology provides sufficient mechanical properties, radiopacity, and angiogenic activity to be suitable for cementation of necrotic bone.
Collapse
Affiliation(s)
- Mehrnaz Salarian
- Biomedical Engineering Graduate Program, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada.,The Ontario Ginseng Innovation & Research Consortium, 1151 Richmond Street, London, ON, N6A 5B9, Canada
| | - William Z Xu
- Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada
| | - Richard Bohay
- Schulich School of Medicine and Dentistry, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada
| | - Edmund M K Lui
- The Ontario Ginseng Innovation & Research Consortium, 1151 Richmond Street, London, ON, N6A 5B9, Canada.,Department of Physiology and Pharmacology, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada
| | - Paul A Charpentier
- Biomedical Engineering Graduate Program, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada.,Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B9, Canada
| |
Collapse
|
5
|
Król K, Macherzyńska B, Pielichowska K. Acrylic bone cements modified with poly(ethylene glycol)-based biocompatible phase-change materials. J Appl Polym Sci 2016. [DOI: 10.1002/app.43898] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Klaudia Król
- Faculty of Materials Science and Ceramics, Department of Biomaterials; AGH University of Science and Technology; Kraków 30-059 Poland
| | - Beata Macherzyńska
- Faculty of Materials Science and Ceramics, Department of Biomaterials; AGH University of Science and Technology; Kraków 30-059 Poland
| | - Kinga Pielichowska
- Faculty of Materials Science and Ceramics, Department of Biomaterials; AGH University of Science and Technology; Kraków 30-059 Poland
| |
Collapse
|
6
|
Lewis G. Not all approved antibiotic-loaded PMMA bone cement brands are the same: ranking using the utility materials selection concept. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:5388. [PMID: 25595722 DOI: 10.1007/s10856-015-5388-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Accepted: 09/16/2014] [Indexed: 06/04/2023]
Abstract
In the literature on in vitro characterization of approved antibiotic-loaded poly(methyl methacrylate) bone cement brands, there is no information on the basis for selection of a given brand for use in cemented arthroplasties. This shortcoming is addressed in the present study. It involved determining four key properties (fatigue limit, fracture toughness, polymerization rate, and phosphate buffered saline diffusion coefficient) for six brands and then using the mean property values, in conjunction with a materials selection methodology, called the utility concept, to rank the brands. It is emphasized that the present work is an illustration of a rational approach to selection of a cement brand and, as such, the study findings are not intended to be recommendations regarding clinical use or otherwise of a brand.
Collapse
Affiliation(s)
- Gladius Lewis
- Department of Mechanical Engineering, The University of Memphis, Memphis, TN, 38152, USA,
| |
Collapse
|
7
|
Fang C, Hou R, Zhou K, Hua F, Cong Y, Zhang J, Fu J, Cheng YJ. Surface functionalized barium sulfate nanoparticles: controlled in situ synthesis and application in bone cement. J Mater Chem B 2014; 2:1264-1274. [DOI: 10.1039/c3tb21544j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled in situ synthesis of MSAH-coated BaSO4 nanoparticles improves the mechanical properties and in vitro biocompatibility of the bone cements.
Collapse
Affiliation(s)
- Chao Fang
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo, P. R. China
- Faculty of Materials Science and Chemical Engineering
| | - Ruixia Hou
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo, P. R. China
| | - Kefeng Zhou
- Department of Radiology
- Nanjing Drum Tower Hospital
- The Affiliated Hospital of Nanjing University Medical School
- Nanjing, P. R. China
| | - Feibin Hua
- School of Chemical Engineering
- Ningbo University of Technology
- Ningbo, P. R. China
| | - Yang Cong
- School of Chemical Engineering
- Ningbo University of Technology
- Ningbo, P. R. China
| | - Jianfeng Zhang
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo, P. R. China
| | - Jun Fu
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo, P. R. China
| | - Ya-Jun Cheng
- Polymers and Composites Division
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo, P. R. China
| |
Collapse
|
8
|
A daptomycin-xylitol-loaded polymethylmethacrylate bone cement: how much xylitol should be used? Clin Orthop Relat Res 2013; 471:3149-57. [PMID: 23529635 PMCID: PMC3773153 DOI: 10.1007/s11999-013-2939-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The rate of release of an antibiotic from an antibiotic-loaded polymethylmethacrylate (PMMA) bone cement is low. This may be increased by adding a particulate poragen (eg, xylitol) to the cement powder. However, the appropriate poragen amount is unclear. QUESTIONS/PURPOSES We explored the appropriate amount of xylitol to use in a PMMA bone cement loaded with daptomycin and xylitol. METHODS We prepared four groups of cement, each comprising the same amount of daptomycin in the powder (1.36 g/40 g dry powder) but different amounts of xylitol (0, 0.7, 1.4, and 2.7 g); the xylitol mass ratio (X) (mass divided by mass of the final dry cement-daptomycin-xylitol mixture) ranged from 0 to 6.13 wt/wt%. Eight mechanical, antibiotic release, and bacterial inhibitory properties were determined using three to 22 specimens or replicates per test. We then used an optimization method to determine an appropriate value of X by (1) identifying the best-fit relationship between the value of each property and X, (2) defining a master objective function incorporating all of the best fits; and (3) determining the value of X at the maximum master objective function. RESULTS We found an appropriate xylitol amount to be 4.46 wt/wt% (equivalent to 1.93 g xylitol mixed with 1.36 g daptomycin and 40 g dry cement powder). CONCLUSIONS We demonstrated a method that may be used to determine an appropriate xylitol amount for a daptomycin-xylitol-loaded PMMA bone cement. These findings will require in vivo confirmation. CLINICAL RELEVANCE While we identified an appropriate amount of xylitol in a daptomycin-xylitol-loaded PMMA bone cement as a prophylactic agent in total joint arthroplasties, clinical evaluations are needed to confirm the effectiveness of this cement.
Collapse
|
9
|
Khaled SMZ, Charpentier PA, Rizkalla AS. Synthesis and characterization of poly(methyl methacrylate)-based experimental bone cements reinforced with TiO2-SrO nanotubes. Acta Biomater 2010; 6:3178-86. [PMID: 20170759 DOI: 10.1016/j.actbio.2010.02.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Revised: 02/09/2010] [Accepted: 02/12/2010] [Indexed: 11/15/2022]
Abstract
In an attempt to overcome existing limitations of experimental bone cements we here demonstrate a simple approach to synthesizing strontium-modified titania nanotubes (n-SrO-TiO(2) tubes) and functionalize them using the bifunctional monomer methacrylic acid. Then, using 'grafting from' polymerization with methyl methacrylate, experimental bone cements were produced with excellent mechanical properties, radiopacity and biocompatibility. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive spectroscopy mapping and backscattered SEM micrographs revealed a uniform distribution of SrO throughout the titanium matrix, with retention of the nanotubular morphology. Nanocomposites were then reinforced with 1, 2, 4 and 6 wt.% of the functionalized metal oxide nanotubes. Under the mixing and dispersion regime employed in this study, 2 wt.% appeared optimal, exhibiting a more uniform dispersion and stronger adhesion of the nanotubes in the poly(methyl methacrylate) matrix, as shown by TEM and SEM. Moreover, this optimum loading provided a significant increase in the fracture toughness (K(IC)) (20%) and flexural strength (40%) in comparison with the control matrix (unfilled) at P<0.05. Examination of the fracture surfaces by SEM showed that toughening was provided by the nanotubes interlocking with the acrylic matrix and crack bridging during fracture. On modifying the n-TiO(2) tubes with strontium oxide the nanocomposites exhibited a similar radiopacity to a commercial bone cement (CMW 1), while exhibiting a significant enhancement of osteoblast cell proliferation (242%) in vitro compared with the control at P<0.05.
Collapse
Affiliation(s)
- S M Z Khaled
- Department of Chemical and Biochemical Engineering, Faculty of Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9
| | | | | |
Collapse
|
10
|
Frutos G, Pastor JY, Martínez N, Virto MR, Torrado S. Influence of lactose addition to gentamicin-loaded acrylic bone cement on the kinetics of release of the antibiotic and the cement properties. Acta Biomater 2010; 6:804-11. [PMID: 19703595 DOI: 10.1016/j.actbio.2009.08.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Revised: 08/12/2009] [Accepted: 08/19/2009] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to characterize a poly(methyl methacrylate) bone cement that was loaded with the antibiotic gentamicin sulphate (GS) and lactose, which served to modulate the release of GS from cement specimens. The release of GS when the cement specimens were immersed in phosphate-buffered saline at 37 degrees Celsius was determined spectrophotometrically. The microstructure, porosity, density, tensile properties and flexural properties of the cements were determined before and after release of GS. A kinetics model of the release of GS from the cement that involved a coupled mechanism based on dissolution/diffusion processes and an initial burst effect was proposed. Dissolution assay results showed that drug elution was controlled by a diffusion mechanism which can be modulated by lactose addition. Density values and mechanical properties (tensile strength, flexural strength, elastic modulus and fracture toughness) were reduced by the increased porosity resulting from lactose addition, but maintained acceptable values for the structural functions of bone cement. The present results suggest that lactose-modified, gentamicin-loaded acrylic bone cements are potential candidates for use in various orthopaedic and dental applications.
Collapse
|
11
|
O'Brien D, Boyd D, Madigan S, Murphy S. Evaluation of a novel radiopacifiying agent on the physical properties of surgical spineplex. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:53-58. [PMID: 19688251 DOI: 10.1007/s10856-009-3844-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Accepted: 07/27/2009] [Indexed: 05/28/2023]
Abstract
Polymethlylmethacrylate (PMMA) is the most frequently used cement for percutaneous vertebroplasty and kyphoplasty. To aid visualisation during surgery cements are doped with radiopacifying agents such as Barium sulphate (Ba(2)SO(4)) or Zirconium Dioxide (ZiO(2)). Mounting research suggests that these agents may impair the biocompatibility of the cements. However, incorporating an alternative radiopacifier agent with excellent biocompatibility would be a significant step forward. Bioactive radiopaque glasses incorporating elements such as strontium (Sr) and zinc (Zn), known to have beneficial and therapeutic effects on bone, are of great interest in this respect. In this study, the Ba(2)SO(4) of the commercially available Spineplex was incrementally replaced with a radiopaque therapeutic glass composition. The resulting effects on cement setting time, peak isotherm, ultimate compressive strength, Young's modulus (up to 30 days cement maturation) and radiopacity were evaluated. The substitution lead to an increase in cement setting time from 13.1 mins for Spineplex to 16.6-18.3 mins for the glass substituted cements. The peak exotherm during curing was reduced from 74 degrees C for Spineplex to a minimum of 51 degrees C for the fully substituted cement, indicating that reduced thermal necrosis in the in vivo setting is likely with these materials. Ultimate compressive strength and Young's modulus of each formulation showed no significant deterioration due to the substitution. Finally, the radiopacity of the substituted cements were reduced by up to a maximum of 18% in comparison to the control. However, the experimental formulations still maintained radiopacity equivalent to several millimetres of aluminium. As such the substituted cements had substantial equivalence to the Spineplex control. In order to assess the clinical relevance of these findings further investigation is warranted.
Collapse
Affiliation(s)
- D O'Brien
- Medical Engineering Design Innovation Centre (MEDIC), Cork Institute of Technology, Bishopstown, Co. Cork, Ireland
| | | | | | | |
Collapse
|
12
|
Endogan T, Serbetci K, Hasirci N. Effects of ingredients on thermal and mechanical properties of acrylic bone cements. J Appl Polym Sci 2009. [DOI: 10.1002/app.30488] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|