Dental implant materials: Surface modification and interface phenomena

Rupp, Frank; Geis‐Gerstorfer, Jürgen; Geckeler, Kurt E.

doi:10.1002/adma.19960080316

Cited by 28 publications

(20 citation statements)

References 41 publications

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“…[1][2][3] These techniques utilize membranes as mechanical barriers to create a space around the defects to permit bone regeneration to occur in absence of the competition of space from the surrounding connective tissues. That is, isolating an area within which fibrous tissue cannot proliferate and allowing the bone to form at a greater volume and thus reduced the chance of porosity.…”

Section: Introductionmentioning

confidence: 99%

Guided tissue regeneration for using a chitosan membrane: An experimental study in rats

Kuo

Chang

Chen

et al. 2005

J Biomedical Materials Res

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Barrier membranes are employed clinically to deflect the growth of gingival tissues away from root surface. They provide an isolated space over the regions with the defective tissues that allow the relatively slow growing periodontal ligament fibroblasts to be repopulated onto the root surface. Several makes of bioabsorbable membranes are now commercially available. In this study, we have employed chitosan as barrier membrane material and evaluated it for a guided tissue regeneration application. Three types of chitosan membranes: Chi-NaOH, Chi-Na(5)P(3)O(10), and Chi-Na(2)SO(3)(each was gelated by NaOH, crosslinked by Na(5)P(3)O(10) and Na(2)SO(3), respectively), were prepared to be evaluated by the following categories: the mechanical strength to create an effective space, the rapid rate to reach hydrolytic equilibrium in phosphate-buffered solution, and the ease of clinical manipulative operations. Consequently, standardized, transosseous and critical sized skull defects were made in adult rats and the defective regions were covered with the specifically prepared chitosan membranes. After 4 weeks of recovering, varying degrees of bone healing were observed beneath the chitosan membranes in comparison to the control group. The chitosan covered regions showed a clear boundary space between connective tissues and bony tissues. Apparently, this process resulted in a good cell occlusion and beneficial osteogenesis effect to the bone. As for the control group, the bone defect was filled with connective tissue, and a destruction of the integrity of newly formed bone was observed. Among the chitosan membranes tested in this study, Chi-NaOH membrane provided a higher percentage of new bone formation than those from the Chi-Na(5)P(3)O(10) and Chi-Na(2)SO(3) families.

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Section: Introductionmentioning

confidence: 99%

Guided tissue regeneration for using a chitosan membrane: An experimental study in rats

Kuo

Chang

Chen

et al. 2005

J Biomedical Materials Res

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“…The released particles activate a biological reaction that can lead to bone resorption and ultimately causing joint lossening and failure [176]. Of the metals, titanium (alloyed with small amounts of aluminum and vanadium) is generally considered more biocompatible and has mechanical properties close to those of bone [166,177], but it is softer than Co-Cr alloys and more prone to surface wear. Attempts to make the UHMWPE component more wear resistant are generally unsuccessful because the processes invariably degrade the bulk properties.…”

Section: Cobalt-chromium Orthopedic Productsmentioning

confidence: 99%

“…However, titanium also has relatively poor wear resistance. Ion implantation can harden the surface and reduce the friction coefficient, but the metal surface still needs modification in order to enhance the bioactive or bioinert performance [166].…”

Section: Titanium Orthopedic Productsmentioning

confidence: 99%

Plasma-surface modification of biomaterials

Chu

Chen

Wang

et al. 2002

Materials Science and Engineering: R: Reports

1,406

652

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Plasma-surface modification (PSM) is an effective and economical surface treatment technique for many materials and of growing interests in biomedical engineering. This article reviews the various common plasma techniques and experimental methods as applied to biomedical materials research, such as plasma sputtering and etching, plasma implantation, plasma deposition, plasma polymerization, laser plasma deposition, plasma spraying, and so on. The unique advantage of plasma modification is that the surface properties and biocompatibility can be enhanced selectively while the bulk attributes of the materials remain unchanged. Existing materials can, thus, be used and needs for new classes of materials may be obviated thereby shortening the time to develop novel and better biomedical devices. Recent work has spurred a number of very interesting applications in the biomedical field. This review article concentrates upon the current status of these techniques, new applications, and achievements pertaining to biomedical materials research. Examples described include hard tissue replacements, blood contacting prostheses, ophthalmic devices, and other products. #

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“…1,2 Employment of polymers as biomaterials in thoraxic, maxillofacial surgery, and dental implants is gaining prominence. The field of biosensors is also making great strides in the use of polymers.…”

Section: Introductionmentioning

confidence: 99%

Biocompatibility of electroactive polymers in tissues

Kamalesh

Tan

Wang

et al. 2000

J. Biomed. Mater. Res.

143

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The biocompatibility of ethylene-vinyl acetate copolymer (EVAc), polyethylene (PE), and polyaniline (PANi) films in the emeraldine (EM), nigraniline (NA) and leucoemeraldine (LM) intrinsic oxidation states were assessed through subcutaneous implantation into male Sprague-Dawley rats beneath the dorsal skin, for a period ranging from 19 to 90 weeks. Histological examination, interstitial pressure measurement, and X-ray photoelectron spectroscopy (XPS) were employed to determine the biocompatibility of the polymers. The polymers did not provoke inflammatory responses in the subcutaneous tissues over the entire implantation period. Characteristics features associated with tissue-implant incompatibility were not evident near the implantation. Interstitial pressure was measured to evaluate the development of tissue. Low interstitial pressure readings on the region of implantation confirmed the biocompatibility of these polymer types. The surface composition of the electroactive aniline polymers before and after the implantation was characterized by XPS.

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Dental implant materials: Surface modification and interface phenomena

Cited by 28 publications

References 41 publications

Guided tissue regeneration for using a chitosan membrane: An experimental study in rats

Guided tissue regeneration for using a chitosan membrane: An experimental study in rats

Plasma-surface modification of biomaterials

Biocompatibility of electroactive polymers in tissues

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