The effect of heat treatment of wood on osteoconductivity

Rekola, Jami; Aho, A. J.; Gunn, Jarmo; Matinlinna, Jukka Pekka; Hirvonen, Jussi; Viitaniemi, Pertti; Vallittu, Pekka K.

doi:10.1016/j.actbio.2009.01.018

Cited by 20 publications

(10 citation statements)

References 26 publications

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“…The penetration of the blood in the 200 • C heat-treated wood exceeded that in the untreated and 140 • C heat-treated wood. This result is in conjunction with previous in vivo and in vitro tests, where the 200 • C heat-treated wood was the most osteoconductive as well as the most prone to hydroxyl apatite formation, when compared with untreated and 140 • C heat-treated wood [28,30]. The heat treatment seems to have a positive effect on the interaction between a bulk of wood and blood -most likely due to the heat treatment -induced chemical changes in the wood polymer.…”

Section: Liquid Penetration Testsupporting

confidence: 87%

“…Heat treatment is a method introduced by the wood industry to improve the biological and physical endurance of wood against the elements. In vivo studies have shown that heat treatment increases significantly the osteoconductivity of the implanted wood material [27,28]. Wood has a hierarchical structure, with highly evolved liquid conveyance features, which yields a greater biomechanical strength than the solid from which it is composed [29].…”

Section: Introductionmentioning

confidence: 99%

“…The aim of this study was to evaluate changes that take place in a wood material during heat treatment, to better understand the biological response reported previously in the literature [27,28]. To facilitate a sensible comparison, the exact same materials (untreated, 140 • C and 200 • C heat-treated birch wood) as in previous studies were used.…”

Section: Introductionmentioning

confidence: 99%

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Effect of heat treatment of wood on the morphology, surface roughness and penetration of simulated and human blood

Rekola

Lassila

Nganga

et al. 2014

Bio-Medical Materials and Engineering

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BACKGROUND: Wood has been used as a model material for the development of novel fiber-reinforced composite bone substitute biomaterials. In previous studies heat treatment of wood was perceived to significantly increase the osteoconductivity of implanted wood material. AIM: The objective of this study was to examine some of the changing attributes of wood materials that may contribute to improved biological responses gained with heat treatment. METHODS: Untreated and 140 • C and 200 • C heat-treated downy birch (Betula pubescens Ehrh.) were used as the wood materials. Surface roughness and the effect of pre-measurement grinding were measured with contact and non-contact profilometry. Liquid interaction was assessed with a dipping test using two manufactured liquids (simulated blood) as well as human blood. SEM was used to visualize possible heat treatment-induced changes in the hierarchical structure of wood. RESULTS: The surface roughness was observed to significantly decrease with heat treatment. Grinding methods had more influence on the surface contour and roughness than heat treatment. The penetration of the human blood in the 200 • C heattreated exceeded that in the untreated and 140 • C heat-treated materials. SEM showed no significant change due to heat treatment in the dry-state morphology of the wood. DISCUSSION: The results of the liquid penetration test support previous findings in literature concerning the effects of heat treatment on the biological response to implanted wood. Heat-treatment has only a marginal effect on the surface contour of wood. The highly specialized liquid conveyance system of wood may serve as a biomimetic model for the further development of tailored fiber-composite materials.

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Section: Liquid Penetration Testsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of heat treatment of wood on the morphology, surface roughness and penetration of simulated and human blood

Rekola

Lassila

Nganga

et al. 2014

Bio-Medical Materials and Engineering

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“…designed an artificial and metal‐free fiber‐reinforced composite bone material by heat treatment of wood. Historical and histometric analytical results from rabbit models suggested that the high‐temperature treatment has positive effects on the osteoconductivity of these artificial wood implants, which also illustrates the good biocompatibility of lignin . Recently, Kalinoski and Shi confirmed that PCL and lignin without any modification could form a homogeneous solution in chloroform/DMF (2:1 v/v), from which a uniform fibrous platform mineralized by hydroxyapatite could be obtained through electrospinning and further coprecipitation process.…”

Section: Drug and Gene Deliverymentioning

confidence: 97%

Lignin‐Based Micro‐ and Nanomaterials and their Composites in Biomedical Applications

Dai

et al. 2020

ChemSusChem

156

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Lignin, as the most abundant aromatic renewable biopolymer in nature, has long been regarded as waste and simply discarded from the pulp and paper industry. In recent years, with many breakthroughs in lignin chemistry, pretreatment, and processing techniques, a lot of the inherent bioactivities of lignin, including antioxidant activities, antimicrobial activities, biocompatibilities, optical properties, and metal‐ion chelating and redox activities, have been discovered and this has opened a new field not only for lignin‐based materials but also for biomaterials. In this Review, the biological activities of lignin and drug/gene delivery and bioimaging applications of various types of lignin‐based material are summarized. In addition, the challenges and limitations of lignin‐based materials encountered during the development of biomedical applications are also discussed.

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“…Wood is a green and renewable building material, and it has been widely used in construction industry, furniture production and pulping and papermaking industry [1][2][3]. Heat treatment is considered to be an effective technique for wood physical modification, while moisture sorption has a significant impact on the performance of heat-treated wood [4][5][6][7]. Hence, a deeper research on moisture sorption of heat-treated wood is extremely important.…”

Section: Introductionmentioning

confidence: 99%

Micro-FTIR spectroscopy and partial least-squares regression for rapid determination of moisture content of nanogram-scaled heat-treated wood

et al. 2020

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Moisture sorption has a significant impact on the performance of heat-treated wood. In order to better characterize moisture sorption of heat-treated wood, a method for rapid determination of moisture content (MC) of nanogramscaled heat-treated wood is proposed in this work. During moisture adsorption process, micro-Fourier transform infrared (FTIR) spectra of heat-treated wood were recorded. Spectral analysis was applied to these measured spectra, and then moisture adsorption sites and spectral ranges affected by moisture sorption were identified. Meanwhile, moisture contents (MCs) of heat-treated wood at various relative humidity (RH) levels were measured by using dynamic vapor sorption (DVS) setup. Based on these spectral ranges and MCs, a quantitative forecasting model was established using partial least-square regression (PLSR). Furthermore, the developed forecasting model was applied to acquire moisture sorption isotherm of heat-treated wood, in which a very positive correlation between predicted and measured MCs was observed. It was confirmed that this method was effective for rapid detection of MC of nanogram-scaled heat-treated wood which had unique advantages of rapid analysis (second level) and less sample consumption (nanogram level).

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The effect of heat treatment of wood on osteoconductivity

Cited by 20 publications

References 26 publications

Effect of heat treatment of wood on the morphology, surface roughness and penetration of simulated and human blood

Effect of heat treatment of wood on the morphology, surface roughness and penetration of simulated and human blood

Lignin‐Based Micro‐ and Nanomaterials and their Composites in Biomedical Applications

Micro-FTIR spectroscopy and partial least-squares regression for rapid determination of moisture content of nanogram-scaled heat-treated wood

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